fix(proto): add generated comment

Previously a file comment was used, which does not
render with protoprint.

Author: toumorokoshi

pkg/proto/proto.go

@@ -66,8 +66,10 @@ func APIToProto(a *api.API, outputDir string) (*desc.FileDescriptor, error) {
 	fb := builder.NewFile("test.proto")
 	fb.Package = packageName
 	fb.IsProto3 = true
-	fb.SetComments(builder.Comments{
-		LeadingComment: "this file is autogenerated by aepc",
+	// As a file comment is not printed by protoprint,
+	// use package comments instead.
+	fb.SetPackageComments(builder.Comments{
+		LeadingComment: "this file is generated.",
 	})
 	pServiceName := toProtoServiceName(a.Name)
 	serviceNameAsLower := fmt.Sprintf("/%s", strings.ToLower(pServiceName))

pkg/proto/proto_test.go

@@ -79,6 +79,7 @@ func TestAPIToProto(t *testing.T) {
 				// verify that ArchiveTome is a long-running-operation.
 				"rpc ArchiveTome ( ArchiveTomeRequest ) returns ( aep.api.Operation ) {",
 				"string id = 10014;",
+				"this file is generated.",
 			},
 		},
 	}
@@ -134,14 +135,14 @@ func TestAPIToProto(t *testing.T) {
 						strings.Contains(strings.ToLower(protoContent), "rpc "+methodNameLower+"(") ||
 						strings.Contains(protoContent, "rpc "+methodName+" (") ||
 						strings.Contains(protoContent, "rpc "+methodName+"("),
-					"Expected method %s not found in proto content", methodName)
+					"Expected method %q not found in proto content", methodName)
 			}
 
 			// Check for expected strings
 			for _, expectedString := range tt.expectStrings {
 				assert.True(t,
 					strings.Contains(protoContent, expectedString),
-					"Expected string %s not found in proto content", expectedString)
+					"Expected string %q not found in proto content", expectedString)
 			}
 
 			// Verify correct parent-child relationships in the API paths