fix(build): allow services to be named Service (#709)

Fixes https://github.com/hyperium/tonic/issues/676

tests/service_named_service/Cargo.toml

@@ -0,0 +1,16 @@
+[package]
+name = "service_named_service"
+version = "0.1.0"
+authors = ["Lucio Franco <[email protected]>"]
+edition = "2018"
+publish = false
+license = "MIT"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+tonic = { path = "../../tonic" }
+prost = "0.8"
+
+[build-dependencies]
+tonic-build = { path = "../../tonic-build" }

tests/service_named_service/build.rs

@@ -0,0 +1,3 @@
+fn main() {
+    tonic_build::compile_protos("proto/foo.proto").unwrap();
+}

tests/service_named_service/proto/foo.proto

@@ -0,0 +1,11 @@
+syntax = "proto3";
+
+package foo;
+
+service Service {
+  rpc Foo(stream FooRequest) returns (stream FooResponse) {}
+}
+
+message FooRequest {}
+
+message FooResponse {}

tests/service_named_service/src/lib.rs

@@ -0,0 +1,3 @@
+pub mod pb {
+    tonic::include_proto!("foo");
+}