Make output deterministic for graphql interfaces (#209)

We noticed that the output from genqlient can be non-deterministic
when a graphql query queries a field that's an interface. This PR
fixes that by sorting the types as soon as we extract them from
the schema.

generate/testdata/snapshots/TestGenerate-ComplexInlineFragments.graphql-ComplexInlineFragments.graphql.go

@@ -44,8 +44,8 @@ func (v *ComplexInlineFragmentsConflictingStuffArticleThumbnailStuffThumbnail) G
 //
 // ComplexInlineFragmentsConflictingStuffContent is implemented by the following types:
 // ComplexInlineFragmentsConflictingStuffArticle
-// ComplexInlineFragmentsConflictingStuffVideo
 // ComplexInlineFragmentsConflictingStuffTopic
+// ComplexInlineFragmentsConflictingStuffVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -57,10 +57,10 @@ type ComplexInlineFragmentsConflictingStuffContent interface {
 
 func (v *ComplexInlineFragmentsConflictingStuffArticle) implementsGraphQLInterfaceComplexInlineFragmentsConflictingStuffContent() {
 }
-func (v *ComplexInlineFragmentsConflictingStuffVideo) implementsGraphQLInterfaceComplexInlineFragmentsConflictingStuffContent() {
-}
 func (v *ComplexInlineFragmentsConflictingStuffTopic) implementsGraphQLInterfaceComplexInlineFragmentsConflictingStuffContent() {
 }
+func (v *ComplexInlineFragmentsConflictingStuffVideo) implementsGraphQLInterfaceComplexInlineFragmentsConflictingStuffContent() {
+}
 
 func __unmarshalComplexInlineFragmentsConflictingStuffContent(b []byte, v *ComplexInlineFragmentsConflictingStuffContent) error {
 	if string(b) == "null" {
@@ -79,12 +79,12 @@ func __unmarshalComplexInlineFragmentsConflictingStuffContent(b []byte, v *Compl
 	case "Article":
 		*v = new(ComplexInlineFragmentsConflictingStuffArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(ComplexInlineFragmentsConflictingStuffVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(ComplexInlineFragmentsConflictingStuffTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(ComplexInlineFragmentsConflictingStuffVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -106,14 +106,6 @@ func __marshalComplexInlineFragmentsConflictingStuffContent(v *ComplexInlineFrag
 			*ComplexInlineFragmentsConflictingStuffArticle
 		}{typename, v}
 		return json.Marshal(result)
-	case *ComplexInlineFragmentsConflictingStuffVideo:
-		typename = "Video"
-
-		result := struct {
-			TypeName string `json:"__typename"`
-			*ComplexInlineFragmentsConflictingStuffVideo
-		}{typename, v}
-		return json.Marshal(result)
 	case *ComplexInlineFragmentsConflictingStuffTopic:
 		typename = "Topic"
 
@@ -122,6 +114,14 @@ func __marshalComplexInlineFragmentsConflictingStuffContent(v *ComplexInlineFrag
 			*ComplexInlineFragmentsConflictingStuffTopic
 		}{typename, v}
 		return json.Marshal(result)
+	case *ComplexInlineFragmentsConflictingStuffVideo:
+		typename = "Video"
+
+		result := struct {
+			TypeName string `json:"__typename"`
+			*ComplexInlineFragmentsConflictingStuffVideo
+		}{typename, v}
+		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:
@@ -178,8 +178,8 @@ func (v *ComplexInlineFragmentsNestedStuffArticle) GetTypename() string { return
 //
 // ComplexInlineFragmentsNestedStuffContent is implemented by the following types:
 // ComplexInlineFragmentsNestedStuffArticle
-// ComplexInlineFragmentsNestedStuffVideo
 // ComplexInlineFragmentsNestedStuffTopic
+// ComplexInlineFragmentsNestedStuffVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -191,10 +191,10 @@ type ComplexInlineFragmentsNestedStuffContent interface {
 
 func (v *ComplexInlineFragmentsNestedStuffArticle) implementsGraphQLInterfaceComplexInlineFragmentsNestedStuffContent() {
 }
-func (v *ComplexInlineFragmentsNestedStuffVideo) implementsGraphQLInterfaceComplexInlineFragmentsNestedStuffContent() {
-}
 func (v *ComplexInlineFragmentsNestedStuffTopic) implementsGraphQLInterfaceComplexInlineFragmentsNestedStuffContent() {
 }
+func (v *ComplexInlineFragmentsNestedStuffVideo) implementsGraphQLInterfaceComplexInlineFragmentsNestedStuffContent() {
+}
 
 func __unmarshalComplexInlineFragmentsNestedStuffContent(b []byte, v *ComplexInlineFragmentsNestedStuffContent) error {
 	if string(b) == "null" {
@@ -213,12 +213,12 @@ func __unmarshalComplexInlineFragmentsNestedStuffContent(b []byte, v *ComplexInl
 	case "Article":
 		*v = new(ComplexInlineFragmentsNestedStuffArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(ComplexInlineFragmentsNestedStuffVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(ComplexInlineFragmentsNestedStuffTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(ComplexInlineFragmentsNestedStuffVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -240,14 +240,6 @@ func __marshalComplexInlineFragmentsNestedStuffContent(v *ComplexInlineFragments
 			*ComplexInlineFragmentsNestedStuffArticle
 		}{typename, v}
 		return json.Marshal(result)
-	case *ComplexInlineFragmentsNestedStuffVideo:
-		typename = "Video"
-
-		result := struct {
-			TypeName string `json:"__typename"`
-			*ComplexInlineFragmentsNestedStuffVideo
-		}{typename, v}
-		return json.Marshal(result)
 	case *ComplexInlineFragmentsNestedStuffTopic:
 		typename = "Topic"
 
@@ -260,6 +252,14 @@ func __marshalComplexInlineFragmentsNestedStuffContent(v *ComplexInlineFragments
 			*__premarshalComplexInlineFragmentsNestedStuffTopic
 		}{typename, premarshaled}
 		return json.Marshal(result)
+	case *ComplexInlineFragmentsNestedStuffVideo:
+		typename = "Video"
+
+		result := struct {
+			TypeName string `json:"__typename"`
+			*ComplexInlineFragmentsNestedStuffVideo
+		}{typename, v}
+		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:
@@ -497,8 +497,8 @@ func (v *ComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParen
 //
 // ComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenContent is implemented by the following types:
 // ComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenArticle
-// ComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenVideo
 // ComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenTopic
+// ComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -517,10 +517,10 @@ type ComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTop
 
 func (v *ComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenArticle) implementsGraphQLInterfaceComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenContent() {
 }
-func (v *ComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenVideo) implementsGraphQLInterfaceComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenContent() {
-}
 func (v *ComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenTopic) implementsGraphQLInterfaceComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenContent() {
 }
+func (v *ComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenVideo) implementsGraphQLInterfaceComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenContent() {
+}
 
 func __unmarshalComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenContent(b []byte, v *ComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenContent) error {
 	if string(b) == "null" {
@@ -539,12 +539,12 @@ func __unmarshalComplexInlineFragmentsNestedStuffTopicChildrenArticleParentConte
 	case "Article":
 		*v = new(ComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(ComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(ComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(ComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -566,14 +566,6 @@ func __marshalComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContent
 			*ComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenArticle
 		}{typename, v}
 		return json.Marshal(result)
-	case *ComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenVideo:
-		typename = "Video"
-
-		result := struct {
-			TypeName string `json:"__typename"`
-			*ComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenVideo
-		}{typename, v}
-		return json.Marshal(result)
 	case *ComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenTopic:
 		typename = "Topic"
 
@@ -582,6 +574,14 @@ func __marshalComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContent
 			*ComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenTopic
 		}{typename, v}
 		return json.Marshal(result)
+	case *ComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenVideo:
+		typename = "Video"
+
+		result := struct {
+			TypeName string `json:"__typename"`
+			*ComplexInlineFragmentsNestedStuffTopicChildrenArticleParentContentParentTopicChildrenVideo
+		}{typename, v}
+		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:
@@ -656,8 +656,8 @@ func (v *ComplexInlineFragmentsNestedStuffTopicChildrenArticleParentTopic) GetPa
 //
 // ComplexInlineFragmentsNestedStuffTopicChildrenContent is implemented by the following types:
 // ComplexInlineFragmentsNestedStuffTopicChildrenArticle
-// ComplexInlineFragmentsNestedStuffTopicChildrenVideo
 // ComplexInlineFragmentsNestedStuffTopicChildrenTopic
+// ComplexInlineFragmentsNestedStuffTopicChildrenVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -674,10 +674,10 @@ type ComplexInlineFragmentsNestedStuffTopicChildrenContent interface {
 
 func (v *ComplexInlineFragmentsNestedStuffTopicChildrenArticle) implementsGraphQLInterfaceComplexInlineFragmentsNestedStuffTopicChildrenContent() {
 }
-func (v *ComplexInlineFragmentsNestedStuffTopicChildrenVideo) implementsGraphQLInterfaceComplexInlineFragmentsNestedStuffTopicChildrenContent() {
-}
 func (v *ComplexInlineFragmentsNestedStuffTopicChildrenTopic) implementsGraphQLInterfaceComplexInlineFragmentsNestedStuffTopicChildrenContent() {
 }
+func (v *ComplexInlineFragmentsNestedStuffTopicChildrenVideo) implementsGraphQLInterfaceComplexInlineFragmentsNestedStuffTopicChildrenContent() {
+}
 
 func __unmarshalComplexInlineFragmentsNestedStuffTopicChildrenContent(b []byte, v *ComplexInlineFragmentsNestedStuffTopicChildrenContent) error {
 	if string(b) == "null" {
@@ -696,12 +696,12 @@ func __unmarshalComplexInlineFragmentsNestedStuffTopicChildrenContent(b []byte,
 	case "Article":
 		*v = new(ComplexInlineFragmentsNestedStuffTopicChildrenArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(ComplexInlineFragmentsNestedStuffTopicChildrenVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(ComplexInlineFragmentsNestedStuffTopicChildrenTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(ComplexInlineFragmentsNestedStuffTopicChildrenVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -723,14 +723,6 @@ func __marshalComplexInlineFragmentsNestedStuffTopicChildrenContent(v *ComplexIn
 			*ComplexInlineFragmentsNestedStuffTopicChildrenArticle
 		}{typename, v}
 		return json.Marshal(result)
-	case *ComplexInlineFragmentsNestedStuffTopicChildrenVideo:
-		typename = "Video"
-
-		result := struct {
-			TypeName string `json:"__typename"`
-			*ComplexInlineFragmentsNestedStuffTopicChildrenVideo
-		}{typename, v}
-		return json.Marshal(result)
 	case *ComplexInlineFragmentsNestedStuffTopicChildrenTopic:
 		typename = "Topic"
 
@@ -739,6 +731,14 @@ func __marshalComplexInlineFragmentsNestedStuffTopicChildrenContent(v *ComplexIn
 			*ComplexInlineFragmentsNestedStuffTopicChildrenTopic
 		}{typename, v}
 		return json.Marshal(result)
+	case *ComplexInlineFragmentsNestedStuffTopicChildrenVideo:
+		typename = "Video"
+
+		result := struct {
+			TypeName string `json:"__typename"`
+			*ComplexInlineFragmentsNestedStuffTopicChildrenVideo
+		}{typename, v}
+		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:
@@ -806,8 +806,8 @@ func (v *ComplexInlineFragmentsRandomItemArticle) GetName() string { return v.Na
 //
 // ComplexInlineFragmentsRandomItemContent is implemented by the following types:
 // ComplexInlineFragmentsRandomItemArticle
-// ComplexInlineFragmentsRandomItemVideo
 // ComplexInlineFragmentsRandomItemTopic
+// ComplexInlineFragmentsRandomItemVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -826,10 +826,10 @@ type ComplexInlineFragmentsRandomItemContent interface {
 
 func (v *ComplexInlineFragmentsRandomItemArticle) implementsGraphQLInterfaceComplexInlineFragmentsRandomItemContent() {
 }
-func (v *ComplexInlineFragmentsRandomItemVideo) implementsGraphQLInterfaceComplexInlineFragmentsRandomItemContent() {
-}
 func (v *ComplexInlineFragmentsRandomItemTopic) implementsGraphQLInterfaceComplexInlineFragmentsRandomItemContent() {
 }
+func (v *ComplexInlineFragmentsRandomItemVideo) implementsGraphQLInterfaceComplexInlineFragmentsRandomItemContent() {
+}
 
 func __unmarshalComplexInlineFragmentsRandomItemContent(b []byte, v *ComplexInlineFragmentsRandomItemContent) error {
 	if string(b) == "null" {
@@ -848,12 +848,12 @@ func __unmarshalComplexInlineFragmentsRandomItemContent(b []byte, v *ComplexInli
 	case "Article":
 		*v = new(ComplexInlineFragmentsRandomItemArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(ComplexInlineFragmentsRandomItemVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(ComplexInlineFragmentsRandomItemTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(ComplexInlineFragmentsRandomItemVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -875,14 +875,6 @@ func __marshalComplexInlineFragmentsRandomItemContent(v *ComplexInlineFragmentsR
 			*ComplexInlineFragmentsRandomItemArticle
 		}{typename, v}
 		return json.Marshal(result)
-	case *ComplexInlineFragmentsRandomItemVideo:
-		typename = "Video"
-
-		result := struct {
-			TypeName string `json:"__typename"`
-			*ComplexInlineFragmentsRandomItemVideo
-		}{typename, v}
-		return json.Marshal(result)
 	case *ComplexInlineFragmentsRandomItemTopic:
 		typename = "Topic"
 
@@ -891,6 +883,14 @@ func __marshalComplexInlineFragmentsRandomItemContent(v *ComplexInlineFragmentsR
 			*ComplexInlineFragmentsRandomItemTopic
 		}{typename, v}
 		return json.Marshal(result)
+	case *ComplexInlineFragmentsRandomItemVideo:
+		typename = "Video"
+
+		result := struct {
+			TypeName string `json:"__typename"`
+			*ComplexInlineFragmentsRandomItemVideo
+		}{typename, v}
+		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:
@@ -975,8 +975,8 @@ func (v *ComplexInlineFragmentsRepeatedStuffArticle) GetOtherName() string { ret
 //
 // ComplexInlineFragmentsRepeatedStuffContent is implemented by the following types:
 // ComplexInlineFragmentsRepeatedStuffArticle
-// ComplexInlineFragmentsRepeatedStuffVideo
 // ComplexInlineFragmentsRepeatedStuffTopic
+// ComplexInlineFragmentsRepeatedStuffVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -1004,10 +1004,10 @@ type ComplexInlineFragmentsRepeatedStuffContent interface {
 
 func (v *ComplexInlineFragmentsRepeatedStuffArticle) implementsGraphQLInterfaceComplexInlineFragmentsRepeatedStuffContent() {
 }
-func (v *ComplexInlineFragmentsRepeatedStuffVideo) implementsGraphQLInterfaceComplexInlineFragmentsRepeatedStuffContent() {
-}
 func (v *ComplexInlineFragmentsRepeatedStuffTopic) implementsGraphQLInterfaceComplexInlineFragmentsRepeatedStuffContent() {
 }
+func (v *ComplexInlineFragmentsRepeatedStuffVideo) implementsGraphQLInterfaceComplexInlineFragmentsRepeatedStuffContent() {
+}
 
 func __unmarshalComplexInlineFragmentsRepeatedStuffContent(b []byte, v *ComplexInlineFragmentsRepeatedStuffContent) error {
 	if string(b) == "null" {
@@ -1026,12 +1026,12 @@ func __unmarshalComplexInlineFragmentsRepeatedStuffContent(b []byte, v *ComplexI
 	case "Article":
 		*v = new(ComplexInlineFragmentsRepeatedStuffArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(ComplexInlineFragmentsRepeatedStuffVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(ComplexInlineFragmentsRepeatedStuffTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(ComplexInlineFragmentsRepeatedStuffVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -1053,14 +1053,6 @@ func __marshalComplexInlineFragmentsRepeatedStuffContent(v *ComplexInlineFragmen
 			*ComplexInlineFragmentsRepeatedStuffArticle
 		}{typename, v}
 		return json.Marshal(result)
-	case *ComplexInlineFragmentsRepeatedStuffVideo:
-		typename = "Video"
-
-		result := struct {
-			TypeName string `json:"__typename"`
-			*ComplexInlineFragmentsRepeatedStuffVideo
-		}{typename, v}
-		return json.Marshal(result)
 	case *ComplexInlineFragmentsRepeatedStuffTopic:
 		typename = "Topic"
 
@@ -1069,6 +1061,14 @@ func __marshalComplexInlineFragmentsRepeatedStuffContent(v *ComplexInlineFragmen
 			*ComplexInlineFragmentsRepeatedStuffTopic
 		}{typename, v}
 		return json.Marshal(result)
+	case *ComplexInlineFragmentsRepeatedStuffVideo:
+		typename = "Video"
+
+		result := struct {
+			TypeName string `json:"__typename"`
+			*ComplexInlineFragmentsRepeatedStuffVideo
+		}{typename, v}
+		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:

generate/testdata/snapshots/TestGenerate-ComplexNamedFragments.graphql-ComplexNamedFragments.graphql.go

@@ -701,8 +701,8 @@ func (v *InnerQueryFragmentRandomItemArticle) __premarshalJSON() (*__premarshalI
 //
 // InnerQueryFragmentRandomItemContent is implemented by the following types:
 // InnerQueryFragmentRandomItemArticle
-// InnerQueryFragmentRandomItemVideo
 // InnerQueryFragmentRandomItemTopic
+// InnerQueryFragmentRandomItemVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -722,10 +722,10 @@ type InnerQueryFragmentRandomItemContent interface {
 
 func (v *InnerQueryFragmentRandomItemArticle) implementsGraphQLInterfaceInnerQueryFragmentRandomItemContent() {
 }
-func (v *InnerQueryFragmentRandomItemVideo) implementsGraphQLInterfaceInnerQueryFragmentRandomItemContent() {
-}
 func (v *InnerQueryFragmentRandomItemTopic) implementsGraphQLInterfaceInnerQueryFragmentRandomItemContent() {
 }
+func (v *InnerQueryFragmentRandomItemVideo) implementsGraphQLInterfaceInnerQueryFragmentRandomItemContent() {
+}
 
 func __unmarshalInnerQueryFragmentRandomItemContent(b []byte, v *InnerQueryFragmentRandomItemContent) error {
 	if string(b) == "null" {
@@ -744,12 +744,12 @@ func __unmarshalInnerQueryFragmentRandomItemContent(b []byte, v *InnerQueryFragm
 	case "Article":
 		*v = new(InnerQueryFragmentRandomItemArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(InnerQueryFragmentRandomItemVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(InnerQueryFragmentRandomItemTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(InnerQueryFragmentRandomItemVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -775,18 +775,6 @@ func __marshalInnerQueryFragmentRandomItemContent(v *InnerQueryFragmentRandomIte
 			*__premarshalInnerQueryFragmentRandomItemArticle
 		}{typename, premarshaled}
 		return json.Marshal(result)
-	case *InnerQueryFragmentRandomItemVideo:
-		typename = "Video"
-
-		premarshaled, err := v.__premarshalJSON()
-		if err != nil {
-			return nil, err
-		}
-		result := struct {
-			TypeName string `json:"__typename"`
-			*__premarshalInnerQueryFragmentRandomItemVideo
-		}{typename, premarshaled}
-		return json.Marshal(result)
 	case *InnerQueryFragmentRandomItemTopic:
 		typename = "Topic"
 
@@ -799,6 +787,18 @@ func __marshalInnerQueryFragmentRandomItemContent(v *InnerQueryFragmentRandomIte
 			*__premarshalInnerQueryFragmentRandomItemTopic
 		}{typename, premarshaled}
 		return json.Marshal(result)
+	case *InnerQueryFragmentRandomItemVideo:
+		typename = "Video"
+
+		premarshaled, err := v.__premarshalJSON()
+		if err != nil {
+			return nil, err
+		}
+		result := struct {
+			TypeName string `json:"__typename"`
+			*__premarshalInnerQueryFragmentRandomItemVideo
+		}{typename, premarshaled}
+		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:
@@ -1360,8 +1360,8 @@ func (v *MoreVideoFieldsParentTopicChildrenArticle) GetTypename() *string { retu
 //
 // MoreVideoFieldsParentTopicChildrenContent is implemented by the following types:
 // MoreVideoFieldsParentTopicChildrenArticle
-// MoreVideoFieldsParentTopicChildrenVideo
 // MoreVideoFieldsParentTopicChildrenTopic
+// MoreVideoFieldsParentTopicChildrenVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -1373,10 +1373,10 @@ type MoreVideoFieldsParentTopicChildrenContent interface {
 
 func (v *MoreVideoFieldsParentTopicChildrenArticle) implementsGraphQLInterfaceMoreVideoFieldsParentTopicChildrenContent() {
 }
-func (v *MoreVideoFieldsParentTopicChildrenVideo) implementsGraphQLInterfaceMoreVideoFieldsParentTopicChildrenContent() {
-}
 func (v *MoreVideoFieldsParentTopicChildrenTopic) implementsGraphQLInterfaceMoreVideoFieldsParentTopicChildrenContent() {
 }
+func (v *MoreVideoFieldsParentTopicChildrenVideo) implementsGraphQLInterfaceMoreVideoFieldsParentTopicChildrenContent() {
+}
 
 func __unmarshalMoreVideoFieldsParentTopicChildrenContent(b []byte, v *MoreVideoFieldsParentTopicChildrenContent) error {
 	if string(b) == "null" {
@@ -1395,12 +1395,12 @@ func __unmarshalMoreVideoFieldsParentTopicChildrenContent(b []byte, v *MoreVideo
 	case "Article":
 		*v = new(MoreVideoFieldsParentTopicChildrenArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(MoreVideoFieldsParentTopicChildrenVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(MoreVideoFieldsParentTopicChildrenTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(MoreVideoFieldsParentTopicChildrenVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -1422,6 +1422,14 @@ func __marshalMoreVideoFieldsParentTopicChildrenContent(v *MoreVideoFieldsParent
 			*MoreVideoFieldsParentTopicChildrenArticle
 		}{typename, v}
 		return json.Marshal(result)
+	case *MoreVideoFieldsParentTopicChildrenTopic:
+		typename = "Topic"
+
+		result := struct {
+			TypeName string `json:"__typename"`
+			*MoreVideoFieldsParentTopicChildrenTopic
+		}{typename, v}
+		return json.Marshal(result)
 	case *MoreVideoFieldsParentTopicChildrenVideo:
 		typename = "Video"
 
@@ -1434,14 +1442,6 @@ func __marshalMoreVideoFieldsParentTopicChildrenContent(v *MoreVideoFieldsParent
 			*__premarshalMoreVideoFieldsParentTopicChildrenVideo
 		}{typename, premarshaled}
 		return json.Marshal(result)
-	case *MoreVideoFieldsParentTopicChildrenTopic:
-		typename = "Topic"
-
-		result := struct {
-			TypeName string `json:"__typename"`
-			*MoreVideoFieldsParentTopicChildrenTopic
-		}{typename, v}
-		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:

generate/testdata/snapshots/TestGenerate-CovariantInterfaceImplementation.graphql-CovariantInterfaceImplementation.graphql.go

@@ -17,8 +17,8 @@ import (
 //
 // ContentFields is implemented by the following types:
 // ContentFieldsArticle
-// ContentFieldsVideo
 // ContentFieldsTopic
+// ContentFieldsVideo
 type ContentFields interface {
 	implementsGraphQLInterfaceContentFields()
 	// GetNext returns the interface-field "next" from its implementation.
@@ -28,8 +28,8 @@ type ContentFields interface {
 }
 
 func (v *ContentFieldsArticle) implementsGraphQLInterfaceContentFields() {}
-func (v *ContentFieldsVideo) implementsGraphQLInterfaceContentFields()   {}
 func (v *ContentFieldsTopic) implementsGraphQLInterfaceContentFields()   {}
+func (v *ContentFieldsVideo) implementsGraphQLInterfaceContentFields()   {}
 
 func __unmarshalContentFields(b []byte, v *ContentFields) error {
 	if string(b) == "null" {
@@ -48,12 +48,12 @@ func __unmarshalContentFields(b []byte, v *ContentFields) error {
 	case "Article":
 		*v = new(ContentFieldsArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(ContentFieldsVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(ContentFieldsTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(ContentFieldsVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -79,18 +79,6 @@ func __marshalContentFields(v *ContentFields) ([]byte, error) {
 			*__premarshalContentFieldsArticle
 		}{typename, premarshaled}
 		return json.Marshal(result)
-	case *ContentFieldsVideo:
-		typename = "Video"
-
-		premarshaled, err := v.__premarshalJSON()
-		if err != nil {
-			return nil, err
-		}
-		result := struct {
-			TypeName string `json:"__typename"`
-			*__premarshalContentFieldsVideo
-		}{typename, premarshaled}
-		return json.Marshal(result)
 	case *ContentFieldsTopic:
 		typename = "Topic"
 
@@ -103,6 +91,18 @@ func __marshalContentFields(v *ContentFields) ([]byte, error) {
 			*__premarshalContentFieldsTopic
 		}{typename, premarshaled}
 		return json.Marshal(result)
+	case *ContentFieldsVideo:
+		typename = "Video"
+
+		premarshaled, err := v.__premarshalJSON()
+		if err != nil {
+			return nil, err
+		}
+		result := struct {
+			TypeName string `json:"__typename"`
+			*__premarshalContentFieldsVideo
+		}{typename, premarshaled}
+		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:
@@ -246,8 +246,8 @@ func (v *ContentFieldsNextArticle) GetId() testutil.ID { return v.Id }
 //
 // ContentFieldsNextContent is implemented by the following types:
 // ContentFieldsNextArticle
-// ContentFieldsNextVideo
 // ContentFieldsNextTopic
+// ContentFieldsNextVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -263,8 +263,8 @@ type ContentFieldsNextContent interface {
 }
 
 func (v *ContentFieldsNextArticle) implementsGraphQLInterfaceContentFieldsNextContent() {}
-func (v *ContentFieldsNextVideo) implementsGraphQLInterfaceContentFieldsNextContent()   {}
 func (v *ContentFieldsNextTopic) implementsGraphQLInterfaceContentFieldsNextContent()   {}
+func (v *ContentFieldsNextVideo) implementsGraphQLInterfaceContentFieldsNextContent()   {}
 
 func __unmarshalContentFieldsNextContent(b []byte, v *ContentFieldsNextContent) error {
 	if string(b) == "null" {
@@ -283,12 +283,12 @@ func __unmarshalContentFieldsNextContent(b []byte, v *ContentFieldsNextContent)
 	case "Article":
 		*v = new(ContentFieldsNextArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(ContentFieldsNextVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(ContentFieldsNextTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(ContentFieldsNextVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -310,14 +310,6 @@ func __marshalContentFieldsNextContent(v *ContentFieldsNextContent) ([]byte, err
 			*ContentFieldsNextArticle
 		}{typename, v}
 		return json.Marshal(result)
-	case *ContentFieldsNextVideo:
-		typename = "Video"
-
-		result := struct {
-			TypeName string `json:"__typename"`
-			*ContentFieldsNextVideo
-		}{typename, v}
-		return json.Marshal(result)
 	case *ContentFieldsNextTopic:
 		typename = "Topic"
 
@@ -326,6 +318,14 @@ func __marshalContentFieldsNextContent(v *ContentFieldsNextContent) ([]byte, err
 			*ContentFieldsNextTopic
 		}{typename, v}
 		return json.Marshal(result)
+	case *ContentFieldsNextVideo:
+		typename = "Video"
+
+		result := struct {
+			TypeName string `json:"__typename"`
+			*ContentFieldsNextVideo
+		}{typename, v}
+		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:
@@ -377,8 +377,8 @@ func (v *ContentFieldsRelatedArticle) GetId() testutil.ID { return v.Id }
 //
 // ContentFieldsRelatedContent is implemented by the following types:
 // ContentFieldsRelatedArticle
-// ContentFieldsRelatedVideo
 // ContentFieldsRelatedTopic
+// ContentFieldsRelatedVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -394,8 +394,8 @@ type ContentFieldsRelatedContent interface {
 }
 
 func (v *ContentFieldsRelatedArticle) implementsGraphQLInterfaceContentFieldsRelatedContent() {}
-func (v *ContentFieldsRelatedVideo) implementsGraphQLInterfaceContentFieldsRelatedContent()   {}
 func (v *ContentFieldsRelatedTopic) implementsGraphQLInterfaceContentFieldsRelatedContent()   {}
+func (v *ContentFieldsRelatedVideo) implementsGraphQLInterfaceContentFieldsRelatedContent()   {}
 
 func __unmarshalContentFieldsRelatedContent(b []byte, v *ContentFieldsRelatedContent) error {
 	if string(b) == "null" {
@@ -414,12 +414,12 @@ func __unmarshalContentFieldsRelatedContent(b []byte, v *ContentFieldsRelatedCon
 	case "Article":
 		*v = new(ContentFieldsRelatedArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(ContentFieldsRelatedVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(ContentFieldsRelatedTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(ContentFieldsRelatedVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -441,14 +441,6 @@ func __marshalContentFieldsRelatedContent(v *ContentFieldsRelatedContent) ([]byt
 			*ContentFieldsRelatedArticle
 		}{typename, v}
 		return json.Marshal(result)
-	case *ContentFieldsRelatedVideo:
-		typename = "Video"
-
-		result := struct {
-			TypeName string `json:"__typename"`
-			*ContentFieldsRelatedVideo
-		}{typename, v}
-		return json.Marshal(result)
 	case *ContentFieldsRelatedTopic:
 		typename = "Topic"
 
@@ -457,6 +449,14 @@ func __marshalContentFieldsRelatedContent(v *ContentFieldsRelatedContent) ([]byt
 			*ContentFieldsRelatedTopic
 		}{typename, v}
 		return json.Marshal(result)
+	case *ContentFieldsRelatedVideo:
+		typename = "Video"
+
+		result := struct {
+			TypeName string `json:"__typename"`
+			*ContentFieldsRelatedVideo
+		}{typename, v}
+		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:
@@ -865,8 +865,8 @@ func (v *CovariantInterfaceImplementationRandomItemArticle) __premarshalJSON() (
 //
 // CovariantInterfaceImplementationRandomItemContent is implemented by the following types:
 // CovariantInterfaceImplementationRandomItemArticle
-// CovariantInterfaceImplementationRandomItemVideo
 // CovariantInterfaceImplementationRandomItemTopic
+// CovariantInterfaceImplementationRandomItemVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -887,10 +887,10 @@ type CovariantInterfaceImplementationRandomItemContent interface {
 
 func (v *CovariantInterfaceImplementationRandomItemArticle) implementsGraphQLInterfaceCovariantInterfaceImplementationRandomItemContent() {
 }
-func (v *CovariantInterfaceImplementationRandomItemVideo) implementsGraphQLInterfaceCovariantInterfaceImplementationRandomItemContent() {
-}
 func (v *CovariantInterfaceImplementationRandomItemTopic) implementsGraphQLInterfaceCovariantInterfaceImplementationRandomItemContent() {
 }
+func (v *CovariantInterfaceImplementationRandomItemVideo) implementsGraphQLInterfaceCovariantInterfaceImplementationRandomItemContent() {
+}
 
 func __unmarshalCovariantInterfaceImplementationRandomItemContent(b []byte, v *CovariantInterfaceImplementationRandomItemContent) error {
 	if string(b) == "null" {
@@ -909,12 +909,12 @@ func __unmarshalCovariantInterfaceImplementationRandomItemContent(b []byte, v *C
 	case "Article":
 		*v = new(CovariantInterfaceImplementationRandomItemArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(CovariantInterfaceImplementationRandomItemVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(CovariantInterfaceImplementationRandomItemTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(CovariantInterfaceImplementationRandomItemVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -940,18 +940,6 @@ func __marshalCovariantInterfaceImplementationRandomItemContent(v *CovariantInte
 			*__premarshalCovariantInterfaceImplementationRandomItemArticle
 		}{typename, premarshaled}
 		return json.Marshal(result)
-	case *CovariantInterfaceImplementationRandomItemVideo:
-		typename = "Video"
-
-		premarshaled, err := v.__premarshalJSON()
-		if err != nil {
-			return nil, err
-		}
-		result := struct {
-			TypeName string `json:"__typename"`
-			*__premarshalCovariantInterfaceImplementationRandomItemVideo
-		}{typename, premarshaled}
-		return json.Marshal(result)
 	case *CovariantInterfaceImplementationRandomItemTopic:
 		typename = "Topic"
 
@@ -964,6 +952,18 @@ func __marshalCovariantInterfaceImplementationRandomItemContent(v *CovariantInte
 			*__premarshalCovariantInterfaceImplementationRandomItemTopic
 		}{typename, premarshaled}
 		return json.Marshal(result)
+	case *CovariantInterfaceImplementationRandomItemVideo:
+		typename = "Video"
+
+		premarshaled, err := v.__premarshalJSON()
+		if err != nil {
+			return nil, err
+		}
+		result := struct {
+			TypeName string `json:"__typename"`
+			*__premarshalCovariantInterfaceImplementationRandomItemVideo
+		}{typename, premarshaled}
+		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:
@@ -1075,8 +1075,8 @@ func (v *CovariantInterfaceImplementationRandomItemContentNextArticle) __premars
 //
 // CovariantInterfaceImplementationRandomItemContentNextContent is implemented by the following types:
 // CovariantInterfaceImplementationRandomItemContentNextArticle
-// CovariantInterfaceImplementationRandomItemContentNextVideo
 // CovariantInterfaceImplementationRandomItemContentNextTopic
+// CovariantInterfaceImplementationRandomItemContentNextVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -1089,10 +1089,10 @@ type CovariantInterfaceImplementationRandomItemContentNextContent interface {
 
 func (v *CovariantInterfaceImplementationRandomItemContentNextArticle) implementsGraphQLInterfaceCovariantInterfaceImplementationRandomItemContentNextContent() {
 }
-func (v *CovariantInterfaceImplementationRandomItemContentNextVideo) implementsGraphQLInterfaceCovariantInterfaceImplementationRandomItemContentNextContent() {
-}
 func (v *CovariantInterfaceImplementationRandomItemContentNextTopic) implementsGraphQLInterfaceCovariantInterfaceImplementationRandomItemContentNextContent() {
 }
+func (v *CovariantInterfaceImplementationRandomItemContentNextVideo) implementsGraphQLInterfaceCovariantInterfaceImplementationRandomItemContentNextContent() {
+}
 
 func __unmarshalCovariantInterfaceImplementationRandomItemContentNextContent(b []byte, v *CovariantInterfaceImplementationRandomItemContentNextContent) error {
 	if string(b) == "null" {
@@ -1111,12 +1111,12 @@ func __unmarshalCovariantInterfaceImplementationRandomItemContentNextContent(b [
 	case "Article":
 		*v = new(CovariantInterfaceImplementationRandomItemContentNextArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(CovariantInterfaceImplementationRandomItemContentNextVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(CovariantInterfaceImplementationRandomItemContentNextTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(CovariantInterfaceImplementationRandomItemContentNextVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -1142,18 +1142,6 @@ func __marshalCovariantInterfaceImplementationRandomItemContentNextContent(v *Co
 			*__premarshalCovariantInterfaceImplementationRandomItemContentNextArticle
 		}{typename, premarshaled}
 		return json.Marshal(result)
-	case *CovariantInterfaceImplementationRandomItemContentNextVideo:
-		typename = "Video"
-
-		premarshaled, err := v.__premarshalJSON()
-		if err != nil {
-			return nil, err
-		}
-		result := struct {
-			TypeName string `json:"__typename"`
-			*__premarshalCovariantInterfaceImplementationRandomItemContentNextVideo
-		}{typename, premarshaled}
-		return json.Marshal(result)
 	case *CovariantInterfaceImplementationRandomItemContentNextTopic:
 		typename = "Topic"
 
@@ -1166,6 +1154,18 @@ func __marshalCovariantInterfaceImplementationRandomItemContentNextContent(v *Co
 			*__premarshalCovariantInterfaceImplementationRandomItemContentNextTopic
 		}{typename, premarshaled}
 		return json.Marshal(result)
+	case *CovariantInterfaceImplementationRandomItemContentNextVideo:
+		typename = "Video"
+
+		premarshaled, err := v.__premarshalJSON()
+		if err != nil {
+			return nil, err
+		}
+		result := struct {
+			TypeName string `json:"__typename"`
+			*__premarshalCovariantInterfaceImplementationRandomItemContentNextVideo
+		}{typename, premarshaled}
+		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:
@@ -1475,8 +1475,8 @@ func (v *CovariantInterfaceImplementationRandomItemContentRelatedArticle) __prem
 //
 // CovariantInterfaceImplementationRandomItemContentRelatedContent is implemented by the following types:
 // CovariantInterfaceImplementationRandomItemContentRelatedArticle
-// CovariantInterfaceImplementationRandomItemContentRelatedVideo
 // CovariantInterfaceImplementationRandomItemContentRelatedTopic
+// CovariantInterfaceImplementationRandomItemContentRelatedVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -1489,10 +1489,10 @@ type CovariantInterfaceImplementationRandomItemContentRelatedContent interface {
 
 func (v *CovariantInterfaceImplementationRandomItemContentRelatedArticle) implementsGraphQLInterfaceCovariantInterfaceImplementationRandomItemContentRelatedContent() {
 }
-func (v *CovariantInterfaceImplementationRandomItemContentRelatedVideo) implementsGraphQLInterfaceCovariantInterfaceImplementationRandomItemContentRelatedContent() {
-}
 func (v *CovariantInterfaceImplementationRandomItemContentRelatedTopic) implementsGraphQLInterfaceCovariantInterfaceImplementationRandomItemContentRelatedContent() {
 }
+func (v *CovariantInterfaceImplementationRandomItemContentRelatedVideo) implementsGraphQLInterfaceCovariantInterfaceImplementationRandomItemContentRelatedContent() {
+}
 
 func __unmarshalCovariantInterfaceImplementationRandomItemContentRelatedContent(b []byte, v *CovariantInterfaceImplementationRandomItemContentRelatedContent) error {
 	if string(b) == "null" {
@@ -1511,12 +1511,12 @@ func __unmarshalCovariantInterfaceImplementationRandomItemContentRelatedContent(
 	case "Article":
 		*v = new(CovariantInterfaceImplementationRandomItemContentRelatedArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(CovariantInterfaceImplementationRandomItemContentRelatedVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(CovariantInterfaceImplementationRandomItemContentRelatedTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(CovariantInterfaceImplementationRandomItemContentRelatedVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -1542,18 +1542,6 @@ func __marshalCovariantInterfaceImplementationRandomItemContentRelatedContent(v
 			*__premarshalCovariantInterfaceImplementationRandomItemContentRelatedArticle
 		}{typename, premarshaled}
 		return json.Marshal(result)
-	case *CovariantInterfaceImplementationRandomItemContentRelatedVideo:
-		typename = "Video"
-
-		premarshaled, err := v.__premarshalJSON()
-		if err != nil {
-			return nil, err
-		}
-		result := struct {
-			TypeName string `json:"__typename"`
-			*__premarshalCovariantInterfaceImplementationRandomItemContentRelatedVideo
-		}{typename, premarshaled}
-		return json.Marshal(result)
 	case *CovariantInterfaceImplementationRandomItemContentRelatedTopic:
 		typename = "Topic"
 
@@ -1566,6 +1554,18 @@ func __marshalCovariantInterfaceImplementationRandomItemContentRelatedContent(v
 			*__premarshalCovariantInterfaceImplementationRandomItemContentRelatedTopic
 		}{typename, premarshaled}
 		return json.Marshal(result)
+	case *CovariantInterfaceImplementationRandomItemContentRelatedVideo:
+		typename = "Video"
+
+		premarshaled, err := v.__premarshalJSON()
+		if err != nil {
+			return nil, err
+		}
+		result := struct {
+			TypeName string `json:"__typename"`
+			*__premarshalCovariantInterfaceImplementationRandomItemContentRelatedVideo
+		}{typename, premarshaled}
+		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:

generate/testdata/snapshots/TestGenerate-InterfaceListField.graphql-InterfaceListField.graphql.go

@@ -145,8 +145,8 @@ func (v *InterfaceListFieldRootTopicChildrenArticle) GetName() string { return v
 //
 // InterfaceListFieldRootTopicChildrenContent is implemented by the following types:
 // InterfaceListFieldRootTopicChildrenArticle
-// InterfaceListFieldRootTopicChildrenVideo
 // InterfaceListFieldRootTopicChildrenTopic
+// InterfaceListFieldRootTopicChildrenVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -165,10 +165,10 @@ type InterfaceListFieldRootTopicChildrenContent interface {
 
 func (v *InterfaceListFieldRootTopicChildrenArticle) implementsGraphQLInterfaceInterfaceListFieldRootTopicChildrenContent() {
 }
-func (v *InterfaceListFieldRootTopicChildrenVideo) implementsGraphQLInterfaceInterfaceListFieldRootTopicChildrenContent() {
-}
 func (v *InterfaceListFieldRootTopicChildrenTopic) implementsGraphQLInterfaceInterfaceListFieldRootTopicChildrenContent() {
 }
+func (v *InterfaceListFieldRootTopicChildrenVideo) implementsGraphQLInterfaceInterfaceListFieldRootTopicChildrenContent() {
+}
 
 func __unmarshalInterfaceListFieldRootTopicChildrenContent(b []byte, v *InterfaceListFieldRootTopicChildrenContent) error {
 	if string(b) == "null" {
@@ -187,12 +187,12 @@ func __unmarshalInterfaceListFieldRootTopicChildrenContent(b []byte, v *Interfac
 	case "Article":
 		*v = new(InterfaceListFieldRootTopicChildrenArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(InterfaceListFieldRootTopicChildrenVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(InterfaceListFieldRootTopicChildrenTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(InterfaceListFieldRootTopicChildrenVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -214,14 +214,6 @@ func __marshalInterfaceListFieldRootTopicChildrenContent(v *InterfaceListFieldRo
 			*InterfaceListFieldRootTopicChildrenArticle
 		}{typename, v}
 		return json.Marshal(result)
-	case *InterfaceListFieldRootTopicChildrenVideo:
-		typename = "Video"
-
-		result := struct {
-			TypeName string `json:"__typename"`
-			*InterfaceListFieldRootTopicChildrenVideo
-		}{typename, v}
-		return json.Marshal(result)
 	case *InterfaceListFieldRootTopicChildrenTopic:
 		typename = "Topic"
 
@@ -230,6 +222,14 @@ func __marshalInterfaceListFieldRootTopicChildrenContent(v *InterfaceListFieldRo
 			*InterfaceListFieldRootTopicChildrenTopic
 		}{typename, v}
 		return json.Marshal(result)
+	case *InterfaceListFieldRootTopicChildrenVideo:
+		typename = "Video"
+
+		result := struct {
+			TypeName string `json:"__typename"`
+			*InterfaceListFieldRootTopicChildrenVideo
+		}{typename, v}
+		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:
@@ -393,8 +393,8 @@ func (v *InterfaceListFieldWithPointerTopicChildrenArticle) GetName() string { r
 //
 // InterfaceListFieldWithPointerTopicChildrenContent is implemented by the following types:
 // InterfaceListFieldWithPointerTopicChildrenArticle
-// InterfaceListFieldWithPointerTopicChildrenVideo
 // InterfaceListFieldWithPointerTopicChildrenTopic
+// InterfaceListFieldWithPointerTopicChildrenVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -413,10 +413,10 @@ type InterfaceListFieldWithPointerTopicChildrenContent interface {
 
 func (v *InterfaceListFieldWithPointerTopicChildrenArticle) implementsGraphQLInterfaceInterfaceListFieldWithPointerTopicChildrenContent() {
 }
-func (v *InterfaceListFieldWithPointerTopicChildrenVideo) implementsGraphQLInterfaceInterfaceListFieldWithPointerTopicChildrenContent() {
-}
 func (v *InterfaceListFieldWithPointerTopicChildrenTopic) implementsGraphQLInterfaceInterfaceListFieldWithPointerTopicChildrenContent() {
 }
+func (v *InterfaceListFieldWithPointerTopicChildrenVideo) implementsGraphQLInterfaceInterfaceListFieldWithPointerTopicChildrenContent() {
+}
 
 func __unmarshalInterfaceListFieldWithPointerTopicChildrenContent(b []byte, v *InterfaceListFieldWithPointerTopicChildrenContent) error {
 	if string(b) == "null" {
@@ -435,12 +435,12 @@ func __unmarshalInterfaceListFieldWithPointerTopicChildrenContent(b []byte, v *I
 	case "Article":
 		*v = new(InterfaceListFieldWithPointerTopicChildrenArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(InterfaceListFieldWithPointerTopicChildrenVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(InterfaceListFieldWithPointerTopicChildrenTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(InterfaceListFieldWithPointerTopicChildrenVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -462,14 +462,6 @@ func __marshalInterfaceListFieldWithPointerTopicChildrenContent(v *InterfaceList
 			*InterfaceListFieldWithPointerTopicChildrenArticle
 		}{typename, v}
 		return json.Marshal(result)
-	case *InterfaceListFieldWithPointerTopicChildrenVideo:
-		typename = "Video"
-
-		result := struct {
-			TypeName string `json:"__typename"`
-			*InterfaceListFieldWithPointerTopicChildrenVideo
-		}{typename, v}
-		return json.Marshal(result)
 	case *InterfaceListFieldWithPointerTopicChildrenTopic:
 		typename = "Topic"
 
@@ -478,6 +470,14 @@ func __marshalInterfaceListFieldWithPointerTopicChildrenContent(v *InterfaceList
 			*InterfaceListFieldWithPointerTopicChildrenTopic
 		}{typename, v}
 		return json.Marshal(result)
+	case *InterfaceListFieldWithPointerTopicChildrenVideo:
+		typename = "Video"
+
+		result := struct {
+			TypeName string `json:"__typename"`
+			*InterfaceListFieldWithPointerTopicChildrenVideo
+		}{typename, v}
+		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:

generate/testdata/snapshots/TestGenerate-InterfaceListOfListsOfListsField.graphql-InterfaceListOfListsOfListsField.graphql.go

@@ -14,8 +14,8 @@ import (
 //
 // InterfaceListOfListOfListsFieldListOfListsOfListsOfContent is implemented by the following types:
 // InterfaceListOfListOfListsFieldListOfListsOfListsOfContentArticle
-// InterfaceListOfListOfListsFieldListOfListsOfListsOfContentVideo
 // InterfaceListOfListOfListsFieldListOfListsOfListsOfContentTopic
+// InterfaceListOfListOfListsFieldListOfListsOfListsOfContentVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -34,10 +34,10 @@ type InterfaceListOfListOfListsFieldListOfListsOfListsOfContent interface {
 
 func (v *InterfaceListOfListOfListsFieldListOfListsOfListsOfContentArticle) implementsGraphQLInterfaceInterfaceListOfListOfListsFieldListOfListsOfListsOfContent() {
 }
-func (v *InterfaceListOfListOfListsFieldListOfListsOfListsOfContentVideo) implementsGraphQLInterfaceInterfaceListOfListOfListsFieldListOfListsOfListsOfContent() {
-}
 func (v *InterfaceListOfListOfListsFieldListOfListsOfListsOfContentTopic) implementsGraphQLInterfaceInterfaceListOfListOfListsFieldListOfListsOfListsOfContent() {
 }
+func (v *InterfaceListOfListOfListsFieldListOfListsOfListsOfContentVideo) implementsGraphQLInterfaceInterfaceListOfListOfListsFieldListOfListsOfListsOfContent() {
+}
 
 func __unmarshalInterfaceListOfListOfListsFieldListOfListsOfListsOfContent(b []byte, v *InterfaceListOfListOfListsFieldListOfListsOfListsOfContent) error {
 	if string(b) == "null" {
@@ -56,12 +56,12 @@ func __unmarshalInterfaceListOfListOfListsFieldListOfListsOfListsOfContent(b []b
 	case "Article":
 		*v = new(InterfaceListOfListOfListsFieldListOfListsOfListsOfContentArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(InterfaceListOfListOfListsFieldListOfListsOfListsOfContentVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(InterfaceListOfListOfListsFieldListOfListsOfListsOfContentTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(InterfaceListOfListOfListsFieldListOfListsOfListsOfContentVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -83,14 +83,6 @@ func __marshalInterfaceListOfListOfListsFieldListOfListsOfListsOfContent(v *Inte
 			*InterfaceListOfListOfListsFieldListOfListsOfListsOfContentArticle
 		}{typename, v}
 		return json.Marshal(result)
-	case *InterfaceListOfListOfListsFieldListOfListsOfListsOfContentVideo:
-		typename = "Video"
-
-		result := struct {
-			TypeName string `json:"__typename"`
-			*InterfaceListOfListOfListsFieldListOfListsOfListsOfContentVideo
-		}{typename, v}
-		return json.Marshal(result)
 	case *InterfaceListOfListOfListsFieldListOfListsOfListsOfContentTopic:
 		typename = "Topic"
 
@@ -99,6 +91,14 @@ func __marshalInterfaceListOfListOfListsFieldListOfListsOfListsOfContent(v *Inte
 			*InterfaceListOfListOfListsFieldListOfListsOfListsOfContentTopic
 		}{typename, v}
 		return json.Marshal(result)
+	case *InterfaceListOfListOfListsFieldListOfListsOfListsOfContentVideo:
+		typename = "Video"
+
+		result := struct {
+			TypeName string `json:"__typename"`
+			*InterfaceListOfListOfListsFieldListOfListsOfListsOfContentVideo
+		}{typename, v}
+		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:
@@ -379,8 +379,8 @@ func (v *InterfaceListOfListOfListsFieldWithPointerArticle) GetName() *string {
 //
 // InterfaceListOfListOfListsFieldWithPointerContent is implemented by the following types:
 // InterfaceListOfListOfListsFieldWithPointerArticle
-// InterfaceListOfListOfListsFieldWithPointerVideo
 // InterfaceListOfListOfListsFieldWithPointerTopic
+// InterfaceListOfListOfListsFieldWithPointerVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -399,10 +399,10 @@ type InterfaceListOfListOfListsFieldWithPointerContent interface {
 
 func (v *InterfaceListOfListOfListsFieldWithPointerArticle) implementsGraphQLInterfaceInterfaceListOfListOfListsFieldWithPointerContent() {
 }
-func (v *InterfaceListOfListOfListsFieldWithPointerVideo) implementsGraphQLInterfaceInterfaceListOfListOfListsFieldWithPointerContent() {
-}
 func (v *InterfaceListOfListOfListsFieldWithPointerTopic) implementsGraphQLInterfaceInterfaceListOfListOfListsFieldWithPointerContent() {
 }
+func (v *InterfaceListOfListOfListsFieldWithPointerVideo) implementsGraphQLInterfaceInterfaceListOfListOfListsFieldWithPointerContent() {
+}
 
 func __unmarshalInterfaceListOfListOfListsFieldWithPointerContent(b []byte, v *InterfaceListOfListOfListsFieldWithPointerContent) error {
 	if string(b) == "null" {
@@ -421,12 +421,12 @@ func __unmarshalInterfaceListOfListOfListsFieldWithPointerContent(b []byte, v *I
 	case "Article":
 		*v = new(InterfaceListOfListOfListsFieldWithPointerArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(InterfaceListOfListOfListsFieldWithPointerVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(InterfaceListOfListOfListsFieldWithPointerTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(InterfaceListOfListOfListsFieldWithPointerVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -448,14 +448,6 @@ func __marshalInterfaceListOfListOfListsFieldWithPointerContent(v *InterfaceList
 			*InterfaceListOfListOfListsFieldWithPointerArticle
 		}{typename, v}
 		return json.Marshal(result)
-	case *InterfaceListOfListOfListsFieldWithPointerVideo:
-		typename = "Video"
-
-		result := struct {
-			TypeName string `json:"__typename"`
-			*InterfaceListOfListOfListsFieldWithPointerVideo
-		}{typename, v}
-		return json.Marshal(result)
 	case *InterfaceListOfListOfListsFieldWithPointerTopic:
 		typename = "Topic"
 
@@ -464,6 +456,14 @@ func __marshalInterfaceListOfListOfListsFieldWithPointerContent(v *InterfaceList
 			*InterfaceListOfListOfListsFieldWithPointerTopic
 		}{typename, v}
 		return json.Marshal(result)
+	case *InterfaceListOfListOfListsFieldWithPointerVideo:
+		typename = "Video"
+
+		result := struct {
+			TypeName string `json:"__typename"`
+			*InterfaceListOfListOfListsFieldWithPointerVideo
+		}{typename, v}
+		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:

generate/testdata/snapshots/TestGenerate-InterfaceNesting.graphql-InterfaceNesting.graphql.go

@@ -134,8 +134,8 @@ func (v *InterfaceNestingRootTopicChildrenArticle) GetParent() InterfaceNestingR
 //
 // InterfaceNestingRootTopicChildrenContent is implemented by the following types:
 // InterfaceNestingRootTopicChildrenArticle
-// InterfaceNestingRootTopicChildrenVideo
 // InterfaceNestingRootTopicChildrenTopic
+// InterfaceNestingRootTopicChildrenVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -154,10 +154,10 @@ type InterfaceNestingRootTopicChildrenContent interface {
 
 func (v *InterfaceNestingRootTopicChildrenArticle) implementsGraphQLInterfaceInterfaceNestingRootTopicChildrenContent() {
 }
-func (v *InterfaceNestingRootTopicChildrenVideo) implementsGraphQLInterfaceInterfaceNestingRootTopicChildrenContent() {
-}
 func (v *InterfaceNestingRootTopicChildrenTopic) implementsGraphQLInterfaceInterfaceNestingRootTopicChildrenContent() {
 }
+func (v *InterfaceNestingRootTopicChildrenVideo) implementsGraphQLInterfaceInterfaceNestingRootTopicChildrenContent() {
+}
 
 func __unmarshalInterfaceNestingRootTopicChildrenContent(b []byte, v *InterfaceNestingRootTopicChildrenContent) error {
 	if string(b) == "null" {
@@ -176,12 +176,12 @@ func __unmarshalInterfaceNestingRootTopicChildrenContent(b []byte, v *InterfaceN
 	case "Article":
 		*v = new(InterfaceNestingRootTopicChildrenArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(InterfaceNestingRootTopicChildrenVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(InterfaceNestingRootTopicChildrenTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(InterfaceNestingRootTopicChildrenVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -203,14 +203,6 @@ func __marshalInterfaceNestingRootTopicChildrenContent(v *InterfaceNestingRootTo
 			*InterfaceNestingRootTopicChildrenArticle
 		}{typename, v}
 		return json.Marshal(result)
-	case *InterfaceNestingRootTopicChildrenVideo:
-		typename = "Video"
-
-		result := struct {
-			TypeName string `json:"__typename"`
-			*InterfaceNestingRootTopicChildrenVideo
-		}{typename, v}
-		return json.Marshal(result)
 	case *InterfaceNestingRootTopicChildrenTopic:
 		typename = "Topic"
 
@@ -219,6 +211,14 @@ func __marshalInterfaceNestingRootTopicChildrenContent(v *InterfaceNestingRootTo
 			*InterfaceNestingRootTopicChildrenTopic
 		}{typename, v}
 		return json.Marshal(result)
+	case *InterfaceNestingRootTopicChildrenVideo:
+		typename = "Video"
+
+		result := struct {
+			TypeName string `json:"__typename"`
+			*InterfaceNestingRootTopicChildrenVideo
+		}{typename, v}
+		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:
@@ -341,8 +341,8 @@ func (v *InterfaceNestingRootTopicChildrenContentParentTopicChildrenArticle) Get
 //
 // InterfaceNestingRootTopicChildrenContentParentTopicChildrenContent is implemented by the following types:
 // InterfaceNestingRootTopicChildrenContentParentTopicChildrenArticle
-// InterfaceNestingRootTopicChildrenContentParentTopicChildrenVideo
 // InterfaceNestingRootTopicChildrenContentParentTopicChildrenTopic
+// InterfaceNestingRootTopicChildrenContentParentTopicChildrenVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -359,10 +359,10 @@ type InterfaceNestingRootTopicChildrenContentParentTopicChildrenContent interfac
 
 func (v *InterfaceNestingRootTopicChildrenContentParentTopicChildrenArticle) implementsGraphQLInterfaceInterfaceNestingRootTopicChildrenContentParentTopicChildrenContent() {
 }
-func (v *InterfaceNestingRootTopicChildrenContentParentTopicChildrenVideo) implementsGraphQLInterfaceInterfaceNestingRootTopicChildrenContentParentTopicChildrenContent() {
-}
 func (v *InterfaceNestingRootTopicChildrenContentParentTopicChildrenTopic) implementsGraphQLInterfaceInterfaceNestingRootTopicChildrenContentParentTopicChildrenContent() {
 }
+func (v *InterfaceNestingRootTopicChildrenContentParentTopicChildrenVideo) implementsGraphQLInterfaceInterfaceNestingRootTopicChildrenContentParentTopicChildrenContent() {
+}
 
 func __unmarshalInterfaceNestingRootTopicChildrenContentParentTopicChildrenContent(b []byte, v *InterfaceNestingRootTopicChildrenContentParentTopicChildrenContent) error {
 	if string(b) == "null" {
@@ -381,12 +381,12 @@ func __unmarshalInterfaceNestingRootTopicChildrenContentParentTopicChildrenConte
 	case "Article":
 		*v = new(InterfaceNestingRootTopicChildrenContentParentTopicChildrenArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(InterfaceNestingRootTopicChildrenContentParentTopicChildrenVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(InterfaceNestingRootTopicChildrenContentParentTopicChildrenTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(InterfaceNestingRootTopicChildrenContentParentTopicChildrenVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -408,14 +408,6 @@ func __marshalInterfaceNestingRootTopicChildrenContentParentTopicChildrenContent
 			*InterfaceNestingRootTopicChildrenContentParentTopicChildrenArticle
 		}{typename, v}
 		return json.Marshal(result)
-	case *InterfaceNestingRootTopicChildrenContentParentTopicChildrenVideo:
-		typename = "Video"
-
-		result := struct {
-			TypeName string `json:"__typename"`
-			*InterfaceNestingRootTopicChildrenContentParentTopicChildrenVideo
-		}{typename, v}
-		return json.Marshal(result)
 	case *InterfaceNestingRootTopicChildrenContentParentTopicChildrenTopic:
 		typename = "Topic"
 
@@ -424,6 +416,14 @@ func __marshalInterfaceNestingRootTopicChildrenContentParentTopicChildrenContent
 			*InterfaceNestingRootTopicChildrenContentParentTopicChildrenTopic
 		}{typename, v}
 		return json.Marshal(result)
+	case *InterfaceNestingRootTopicChildrenContentParentTopicChildrenVideo:
+		typename = "Video"
+
+		result := struct {
+			TypeName string `json:"__typename"`
+			*InterfaceNestingRootTopicChildrenContentParentTopicChildrenVideo
+		}{typename, v}
+		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:

generate/testdata/snapshots/TestGenerate-InterfaceNoFragments.graphql-InterfaceNoFragments.graphql.go

@@ -31,8 +31,8 @@ func (v *InterfaceNoFragmentsQueryRandomItemArticle) GetName() string { return v
 //
 // InterfaceNoFragmentsQueryRandomItemContent is implemented by the following types:
 // InterfaceNoFragmentsQueryRandomItemArticle
-// InterfaceNoFragmentsQueryRandomItemVideo
 // InterfaceNoFragmentsQueryRandomItemTopic
+// InterfaceNoFragmentsQueryRandomItemVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -51,10 +51,10 @@ type InterfaceNoFragmentsQueryRandomItemContent interface {
 
 func (v *InterfaceNoFragmentsQueryRandomItemArticle) implementsGraphQLInterfaceInterfaceNoFragmentsQueryRandomItemContent() {
 }
-func (v *InterfaceNoFragmentsQueryRandomItemVideo) implementsGraphQLInterfaceInterfaceNoFragmentsQueryRandomItemContent() {
-}
 func (v *InterfaceNoFragmentsQueryRandomItemTopic) implementsGraphQLInterfaceInterfaceNoFragmentsQueryRandomItemContent() {
 }
+func (v *InterfaceNoFragmentsQueryRandomItemVideo) implementsGraphQLInterfaceInterfaceNoFragmentsQueryRandomItemContent() {
+}
 
 func __unmarshalInterfaceNoFragmentsQueryRandomItemContent(b []byte, v *InterfaceNoFragmentsQueryRandomItemContent) error {
 	if string(b) == "null" {
@@ -73,12 +73,12 @@ func __unmarshalInterfaceNoFragmentsQueryRandomItemContent(b []byte, v *Interfac
 	case "Article":
 		*v = new(InterfaceNoFragmentsQueryRandomItemArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(InterfaceNoFragmentsQueryRandomItemVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(InterfaceNoFragmentsQueryRandomItemTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(InterfaceNoFragmentsQueryRandomItemVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -100,14 +100,6 @@ func __marshalInterfaceNoFragmentsQueryRandomItemContent(v *InterfaceNoFragments
 			*InterfaceNoFragmentsQueryRandomItemArticle
 		}{typename, v}
 		return json.Marshal(result)
-	case *InterfaceNoFragmentsQueryRandomItemVideo:
-		typename = "Video"
-
-		result := struct {
-			TypeName string `json:"__typename"`
-			*InterfaceNoFragmentsQueryRandomItemVideo
-		}{typename, v}
-		return json.Marshal(result)
 	case *InterfaceNoFragmentsQueryRandomItemTopic:
 		typename = "Topic"
 
@@ -116,6 +108,14 @@ func __marshalInterfaceNoFragmentsQueryRandomItemContent(v *InterfaceNoFragments
 			*InterfaceNoFragmentsQueryRandomItemTopic
 		}{typename, v}
 		return json.Marshal(result)
+	case *InterfaceNoFragmentsQueryRandomItemVideo:
+		typename = "Video"
+
+		result := struct {
+			TypeName string `json:"__typename"`
+			*InterfaceNoFragmentsQueryRandomItemVideo
+		}{typename, v}
+		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:
@@ -181,8 +181,8 @@ func (v *InterfaceNoFragmentsQueryRandomItemWithTypeNameArticle) GetName() strin
 //
 // InterfaceNoFragmentsQueryRandomItemWithTypeNameContent is implemented by the following types:
 // InterfaceNoFragmentsQueryRandomItemWithTypeNameArticle
-// InterfaceNoFragmentsQueryRandomItemWithTypeNameVideo
 // InterfaceNoFragmentsQueryRandomItemWithTypeNameTopic
+// InterfaceNoFragmentsQueryRandomItemWithTypeNameVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -201,10 +201,10 @@ type InterfaceNoFragmentsQueryRandomItemWithTypeNameContent interface {
 
 func (v *InterfaceNoFragmentsQueryRandomItemWithTypeNameArticle) implementsGraphQLInterfaceInterfaceNoFragmentsQueryRandomItemWithTypeNameContent() {
 }
-func (v *InterfaceNoFragmentsQueryRandomItemWithTypeNameVideo) implementsGraphQLInterfaceInterfaceNoFragmentsQueryRandomItemWithTypeNameContent() {
-}
 func (v *InterfaceNoFragmentsQueryRandomItemWithTypeNameTopic) implementsGraphQLInterfaceInterfaceNoFragmentsQueryRandomItemWithTypeNameContent() {
 }
+func (v *InterfaceNoFragmentsQueryRandomItemWithTypeNameVideo) implementsGraphQLInterfaceInterfaceNoFragmentsQueryRandomItemWithTypeNameContent() {
+}
 
 func __unmarshalInterfaceNoFragmentsQueryRandomItemWithTypeNameContent(b []byte, v *InterfaceNoFragmentsQueryRandomItemWithTypeNameContent) error {
 	if string(b) == "null" {
@@ -223,12 +223,12 @@ func __unmarshalInterfaceNoFragmentsQueryRandomItemWithTypeNameContent(b []byte,
 	case "Article":
 		*v = new(InterfaceNoFragmentsQueryRandomItemWithTypeNameArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(InterfaceNoFragmentsQueryRandomItemWithTypeNameVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(InterfaceNoFragmentsQueryRandomItemWithTypeNameTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(InterfaceNoFragmentsQueryRandomItemWithTypeNameVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -250,14 +250,6 @@ func __marshalInterfaceNoFragmentsQueryRandomItemWithTypeNameContent(v *Interfac
 			*InterfaceNoFragmentsQueryRandomItemWithTypeNameArticle
 		}{typename, v}
 		return json.Marshal(result)
-	case *InterfaceNoFragmentsQueryRandomItemWithTypeNameVideo:
-		typename = "Video"
-
-		result := struct {
-			TypeName string `json:"__typename"`
-			*InterfaceNoFragmentsQueryRandomItemWithTypeNameVideo
-		}{typename, v}
-		return json.Marshal(result)
 	case *InterfaceNoFragmentsQueryRandomItemWithTypeNameTopic:
 		typename = "Topic"
 
@@ -266,6 +258,14 @@ func __marshalInterfaceNoFragmentsQueryRandomItemWithTypeNameContent(v *Interfac
 			*InterfaceNoFragmentsQueryRandomItemWithTypeNameTopic
 		}{typename, v}
 		return json.Marshal(result)
+	case *InterfaceNoFragmentsQueryRandomItemWithTypeNameVideo:
+		typename = "Video"
+
+		result := struct {
+			TypeName string `json:"__typename"`
+			*InterfaceNoFragmentsQueryRandomItemWithTypeNameVideo
+		}{typename, v}
+		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:
@@ -499,8 +499,8 @@ func (v *InterfaceNoFragmentsQueryWithPointerArticle) GetName() *string { return
 //
 // InterfaceNoFragmentsQueryWithPointerContent is implemented by the following types:
 // InterfaceNoFragmentsQueryWithPointerArticle
-// InterfaceNoFragmentsQueryWithPointerVideo
 // InterfaceNoFragmentsQueryWithPointerTopic
+// InterfaceNoFragmentsQueryWithPointerVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -519,10 +519,10 @@ type InterfaceNoFragmentsQueryWithPointerContent interface {
 
 func (v *InterfaceNoFragmentsQueryWithPointerArticle) implementsGraphQLInterfaceInterfaceNoFragmentsQueryWithPointerContent() {
 }
-func (v *InterfaceNoFragmentsQueryWithPointerVideo) implementsGraphQLInterfaceInterfaceNoFragmentsQueryWithPointerContent() {
-}
 func (v *InterfaceNoFragmentsQueryWithPointerTopic) implementsGraphQLInterfaceInterfaceNoFragmentsQueryWithPointerContent() {
 }
+func (v *InterfaceNoFragmentsQueryWithPointerVideo) implementsGraphQLInterfaceInterfaceNoFragmentsQueryWithPointerContent() {
+}
 
 func __unmarshalInterfaceNoFragmentsQueryWithPointerContent(b []byte, v *InterfaceNoFragmentsQueryWithPointerContent) error {
 	if string(b) == "null" {
@@ -541,12 +541,12 @@ func __unmarshalInterfaceNoFragmentsQueryWithPointerContent(b []byte, v *Interfa
 	case "Article":
 		*v = new(InterfaceNoFragmentsQueryWithPointerArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(InterfaceNoFragmentsQueryWithPointerVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(InterfaceNoFragmentsQueryWithPointerTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(InterfaceNoFragmentsQueryWithPointerVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -568,14 +568,6 @@ func __marshalInterfaceNoFragmentsQueryWithPointerContent(v *InterfaceNoFragment
 			*InterfaceNoFragmentsQueryWithPointerArticle
 		}{typename, v}
 		return json.Marshal(result)
-	case *InterfaceNoFragmentsQueryWithPointerVideo:
-		typename = "Video"
-
-		result := struct {
-			TypeName string `json:"__typename"`
-			*InterfaceNoFragmentsQueryWithPointerVideo
-		}{typename, v}
-		return json.Marshal(result)
 	case *InterfaceNoFragmentsQueryWithPointerTopic:
 		typename = "Topic"
 
@@ -584,6 +576,14 @@ func __marshalInterfaceNoFragmentsQueryWithPointerContent(v *InterfaceNoFragment
 			*InterfaceNoFragmentsQueryWithPointerTopic
 		}{typename, v}
 		return json.Marshal(result)
+	case *InterfaceNoFragmentsQueryWithPointerVideo:
+		typename = "Video"
+
+		result := struct {
+			TypeName string `json:"__typename"`
+			*InterfaceNoFragmentsQueryWithPointerVideo
+		}{typename, v}
+		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:

generate/testdata/snapshots/TestGenerate-SimpleInlineFragment.graphql-SimpleInlineFragment.graphql.go

@@ -35,8 +35,8 @@ func (v *SimpleInlineFragmentRandomItemArticle) GetText() string { return v.Text
 //
 // SimpleInlineFragmentRandomItemContent is implemented by the following types:
 // SimpleInlineFragmentRandomItemArticle
-// SimpleInlineFragmentRandomItemVideo
 // SimpleInlineFragmentRandomItemTopic
+// SimpleInlineFragmentRandomItemVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -55,10 +55,10 @@ type SimpleInlineFragmentRandomItemContent interface {
 
 func (v *SimpleInlineFragmentRandomItemArticle) implementsGraphQLInterfaceSimpleInlineFragmentRandomItemContent() {
 }
-func (v *SimpleInlineFragmentRandomItemVideo) implementsGraphQLInterfaceSimpleInlineFragmentRandomItemContent() {
-}
 func (v *SimpleInlineFragmentRandomItemTopic) implementsGraphQLInterfaceSimpleInlineFragmentRandomItemContent() {
 }
+func (v *SimpleInlineFragmentRandomItemVideo) implementsGraphQLInterfaceSimpleInlineFragmentRandomItemContent() {
+}
 
 func __unmarshalSimpleInlineFragmentRandomItemContent(b []byte, v *SimpleInlineFragmentRandomItemContent) error {
 	if string(b) == "null" {
@@ -77,12 +77,12 @@ func __unmarshalSimpleInlineFragmentRandomItemContent(b []byte, v *SimpleInlineF
 	case "Article":
 		*v = new(SimpleInlineFragmentRandomItemArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(SimpleInlineFragmentRandomItemVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(SimpleInlineFragmentRandomItemTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(SimpleInlineFragmentRandomItemVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -104,14 +104,6 @@ func __marshalSimpleInlineFragmentRandomItemContent(v *SimpleInlineFragmentRando
 			*SimpleInlineFragmentRandomItemArticle
 		}{typename, v}
 		return json.Marshal(result)
-	case *SimpleInlineFragmentRandomItemVideo:
-		typename = "Video"
-
-		result := struct {
-			TypeName string `json:"__typename"`
-			*SimpleInlineFragmentRandomItemVideo
-		}{typename, v}
-		return json.Marshal(result)
 	case *SimpleInlineFragmentRandomItemTopic:
 		typename = "Topic"
 
@@ -120,6 +112,14 @@ func __marshalSimpleInlineFragmentRandomItemContent(v *SimpleInlineFragmentRando
 			*SimpleInlineFragmentRandomItemTopic
 		}{typename, v}
 		return json.Marshal(result)
+	case *SimpleInlineFragmentRandomItemVideo:
+		typename = "Video"
+
+		result := struct {
+			TypeName string `json:"__typename"`
+			*SimpleInlineFragmentRandomItemVideo
+		}{typename, v}
+		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:

generate/testdata/snapshots/TestGenerate-SimpleNamedFragment.graphql-SimpleNamedFragment.graphql.go

@@ -31,8 +31,8 @@ func (v *SimpleNamedFragmentRandomItemArticle) GetName() string { return v.Name
 //
 // SimpleNamedFragmentRandomItemContent is implemented by the following types:
 // SimpleNamedFragmentRandomItemArticle
-// SimpleNamedFragmentRandomItemVideo
 // SimpleNamedFragmentRandomItemTopic
+// SimpleNamedFragmentRandomItemVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -51,10 +51,10 @@ type SimpleNamedFragmentRandomItemContent interface {
 
 func (v *SimpleNamedFragmentRandomItemArticle) implementsGraphQLInterfaceSimpleNamedFragmentRandomItemContent() {
 }
-func (v *SimpleNamedFragmentRandomItemVideo) implementsGraphQLInterfaceSimpleNamedFragmentRandomItemContent() {
-}
 func (v *SimpleNamedFragmentRandomItemTopic) implementsGraphQLInterfaceSimpleNamedFragmentRandomItemContent() {
 }
+func (v *SimpleNamedFragmentRandomItemVideo) implementsGraphQLInterfaceSimpleNamedFragmentRandomItemContent() {
+}
 
 func __unmarshalSimpleNamedFragmentRandomItemContent(b []byte, v *SimpleNamedFragmentRandomItemContent) error {
 	if string(b) == "null" {
@@ -73,12 +73,12 @@ func __unmarshalSimpleNamedFragmentRandomItemContent(b []byte, v *SimpleNamedFra
 	case "Article":
 		*v = new(SimpleNamedFragmentRandomItemArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(SimpleNamedFragmentRandomItemVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(SimpleNamedFragmentRandomItemTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(SimpleNamedFragmentRandomItemVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -100,6 +100,14 @@ func __marshalSimpleNamedFragmentRandomItemContent(v *SimpleNamedFragmentRandomI
 			*SimpleNamedFragmentRandomItemArticle
 		}{typename, v}
 		return json.Marshal(result)
+	case *SimpleNamedFragmentRandomItemTopic:
+		typename = "Topic"
+
+		result := struct {
+			TypeName string `json:"__typename"`
+			*SimpleNamedFragmentRandomItemTopic
+		}{typename, v}
+		return json.Marshal(result)
 	case *SimpleNamedFragmentRandomItemVideo:
 		typename = "Video"
 
@@ -112,14 +120,6 @@ func __marshalSimpleNamedFragmentRandomItemContent(v *SimpleNamedFragmentRandomI
 			*__premarshalSimpleNamedFragmentRandomItemVideo
 		}{typename, premarshaled}
 		return json.Marshal(result)
-	case *SimpleNamedFragmentRandomItemTopic:
-		typename = "Topic"
-
-		result := struct {
-			TypeName string `json:"__typename"`
-			*SimpleNamedFragmentRandomItemTopic
-		}{typename, v}
-		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:

generate/testdata/snapshots/TestGenerate-StructOption.graphql-StructOption.graphql.go

@@ -220,8 +220,8 @@ func (v *StructOptionRootTopicChildrenContentParentTopicInterfaceChildrenArticle
 //
 // StructOptionRootTopicChildrenContentParentTopicInterfaceChildrenContent is implemented by the following types:
 // StructOptionRootTopicChildrenContentParentTopicInterfaceChildrenArticle
-// StructOptionRootTopicChildrenContentParentTopicInterfaceChildrenVideo
 // StructOptionRootTopicChildrenContentParentTopicInterfaceChildrenTopic
+// StructOptionRootTopicChildrenContentParentTopicInterfaceChildrenVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -238,10 +238,10 @@ type StructOptionRootTopicChildrenContentParentTopicInterfaceChildrenContent int
 
 func (v *StructOptionRootTopicChildrenContentParentTopicInterfaceChildrenArticle) implementsGraphQLInterfaceStructOptionRootTopicChildrenContentParentTopicInterfaceChildrenContent() {
 }
-func (v *StructOptionRootTopicChildrenContentParentTopicInterfaceChildrenVideo) implementsGraphQLInterfaceStructOptionRootTopicChildrenContentParentTopicInterfaceChildrenContent() {
-}
 func (v *StructOptionRootTopicChildrenContentParentTopicInterfaceChildrenTopic) implementsGraphQLInterfaceStructOptionRootTopicChildrenContentParentTopicInterfaceChildrenContent() {
 }
+func (v *StructOptionRootTopicChildrenContentParentTopicInterfaceChildrenVideo) implementsGraphQLInterfaceStructOptionRootTopicChildrenContentParentTopicInterfaceChildrenContent() {
+}
 
 func __unmarshalStructOptionRootTopicChildrenContentParentTopicInterfaceChildrenContent(b []byte, v *StructOptionRootTopicChildrenContentParentTopicInterfaceChildrenContent) error {
 	if string(b) == "null" {
@@ -260,12 +260,12 @@ func __unmarshalStructOptionRootTopicChildrenContentParentTopicInterfaceChildren
 	case "Article":
 		*v = new(StructOptionRootTopicChildrenContentParentTopicInterfaceChildrenArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(StructOptionRootTopicChildrenContentParentTopicInterfaceChildrenVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(StructOptionRootTopicChildrenContentParentTopicInterfaceChildrenTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(StructOptionRootTopicChildrenContentParentTopicInterfaceChildrenVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -287,6 +287,14 @@ func __marshalStructOptionRootTopicChildrenContentParentTopicInterfaceChildrenCo
 			*StructOptionRootTopicChildrenContentParentTopicInterfaceChildrenArticle
 		}{typename, v}
 		return json.Marshal(result)
+	case *StructOptionRootTopicChildrenContentParentTopicInterfaceChildrenTopic:
+		typename = "Topic"
+
+		result := struct {
+			TypeName string `json:"__typename"`
+			*StructOptionRootTopicChildrenContentParentTopicInterfaceChildrenTopic
+		}{typename, v}
+		return json.Marshal(result)
 	case *StructOptionRootTopicChildrenContentParentTopicInterfaceChildrenVideo:
 		typename = "Video"
 
@@ -299,14 +307,6 @@ func __marshalStructOptionRootTopicChildrenContentParentTopicInterfaceChildrenCo
 			*__premarshalStructOptionRootTopicChildrenContentParentTopicInterfaceChildrenVideo
 		}{typename, premarshaled}
 		return json.Marshal(result)
-	case *StructOptionRootTopicChildrenContentParentTopicInterfaceChildrenTopic:
-		typename = "Topic"
-
-		result := struct {
-			TypeName string `json:"__typename"`
-			*StructOptionRootTopicChildrenContentParentTopicInterfaceChildrenTopic
-		}{typename, v}
-		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default:

generate/testdata/snapshots/TestGenerate-TypeNames.graphql-TypeNames.graphql.go

@@ -14,8 +14,8 @@ import (
 //
 // Item is implemented by the following types:
 // ItemArticle
-// ItemVideo
 // ItemTopic
+// ItemVideo
 // The GraphQL type's documentation follows.
 //
 // Content is implemented by various types like Article, Video, and Topic.
@@ -33,8 +33,8 @@ type Item interface {
 }
 
 func (v *ItemArticle) implementsGraphQLInterfaceItem() {}
-func (v *ItemVideo) implementsGraphQLInterfaceItem()   {}
 func (v *ItemTopic) implementsGraphQLInterfaceItem()   {}
+func (v *ItemVideo) implementsGraphQLInterfaceItem()   {}
 
 func __unmarshalItem(b []byte, v *Item) error {
 	if string(b) == "null" {
@@ -53,12 +53,12 @@ func __unmarshalItem(b []byte, v *Item) error {
 	case "Article":
 		*v = new(ItemArticle)
 		return json.Unmarshal(b, *v)
-	case "Video":
-		*v = new(ItemVideo)
-		return json.Unmarshal(b, *v)
 	case "Topic":
 		*v = new(ItemTopic)
 		return json.Unmarshal(b, *v)
+	case "Video":
+		*v = new(ItemVideo)
+		return json.Unmarshal(b, *v)
 	case "":
 		return fmt.Errorf(
 			"response was missing Content.__typename")
@@ -80,14 +80,6 @@ func __marshalItem(v *Item) ([]byte, error) {
 			*ItemArticle
 		}{typename, v}
 		return json.Marshal(result)
-	case *ItemVideo:
-		typename = "Video"
-
-		result := struct {
-			TypeName string `json:"__typename"`
-			*ItemVideo
-		}{typename, v}
-		return json.Marshal(result)
 	case *ItemTopic:
 		typename = "Topic"
 
@@ -96,6 +88,14 @@ func __marshalItem(v *Item) ([]byte, error) {
 			*ItemTopic
 		}{typename, v}
 		return json.Marshal(result)
+	case *ItemVideo:
+		typename = "Video"
+
+		result := struct {
+			TypeName string `json:"__typename"`
+			*ItemVideo
+		}{typename, v}
+		return json.Marshal(result)
 	case nil:
 		return []byte("null"), nil
 	default: