feat(persistence): add pinned message reactions table

packages/stream_chat_persistence/test/src/mapper/pinned_message_reaction_mapper_test.dart

@@ -0,0 +1,52 @@
+import 'package:test/test.dart';
+import 'package:stream_chat/stream_chat.dart';
+import 'package:stream_chat_persistence/src/db/moor_chat_database.dart';
+import 'package:stream_chat_persistence/src/mapper/pinned_message_reaction_mapper.dart';
+
+import '../utils/date_matcher.dart';
+
+void main() {
+  test('toReaction should map the entity into Reaction', () {
+    final user = User(id: 'testUserId');
+    final message = Message(id: 'testMessageId');
+    final entity = PinnedMessageReactionEntity(
+      userId: user.id,
+      messageId: message.id,
+      type: 'haha',
+      score: 33,
+      createdAt: DateTime.now(),
+      extraData: {'extra_test_data': 'extraData'},
+    );
+
+    final reaction = entity.toReaction(user: user);
+    expect(reaction, isA<Reaction>());
+    expect(reaction.userId, entity.userId);
+    expect(reaction.messageId, entity.messageId);
+    expect(reaction.type, entity.type);
+    expect(reaction.score, entity.score);
+    expect(reaction.createdAt, isSameDateAs(entity.createdAt));
+    expect(reaction.extraData, entity.extraData);
+  });
+
+  test('toEntity should map reaction into PinnedMessageReactionEntity', () {
+    final user = User(id: 'testUserId');
+    final message = Message(id: 'testMessageId');
+    final reaction = Reaction(
+      userId: user.id,
+      messageId: message.id,
+      type: 'haha',
+      score: 33,
+      createdAt: DateTime.now(),
+      extraData: {'extra_test_data': 'extraData'},
+    );
+
+    final entity = reaction.toPinnedEntity();
+    expect(entity, isA<PinnedMessageReactionEntity>());
+    expect(entity.userId, reaction.userId);
+    expect(entity.messageId, reaction.messageId);
+    expect(entity.type, reaction.type);
+    expect(entity.score, reaction.score);
+    expect(entity.createdAt, isSameDateAs(reaction.createdAt));
+    expect(entity.extraData, reaction.extraData);
+  });
+}