[resolvergen] add configuration flag and unit tests for enable_rewrit…

…e_for_single_file

plugin/resolvergen/testdata/singlefile/out/resolver.go

@@ -1,22 +1,21 @@
 package customresolver
 
-// THIS CODE WILL BE UPDATED WITH SCHEMA CHANGES. PREVIOUS IMPLEMENTATION FOR SCHEMA CHANGES WILL BE KEPT IN THE COMMENT SECTION. IMPLEMENTATION FOR UNCHANGED SCHEMA WILL BE KEPT.
+// THIS CODE IS A STARTING POINT ONLY. IT WILL NOT BE UPDATED WITH SCHEMA CHANGES.
 
 import (
 	"context"
-	"fmt"
 )
 
 type CustomResolverType struct{}
 
 // Resolver is the resolver for the resolver field.
 func (r *queryCustomResolverType) Resolver(ctx context.Context) (*Resolver, error) {
-	panic(fmt.Errorf("not implemented: Resolver - resolver"))
+	panic("not implemented")
 }
 
 // Name is the resolver for the name field.
 func (r *resolverCustomResolverType) Name(ctx context.Context, obj *Resolver) (string, error) {
-	panic(fmt.Errorf("not implemented: Name - name"))
+	panic("not implemented")
 }
 
 // Query returns QueryResolver implementation.
@@ -27,13 +26,3 @@ func (r *CustomResolverType) Resolver() ResolverResolver { return &resolverCusto
 
 type queryCustomResolverType struct{ *CustomResolverType }
 type resolverCustomResolverType struct{ *CustomResolverType }
-
-// !!! WARNING !!!
-// The code below was going to be deleted when updating resolvers. It has been copied here so you have
-// one last chance to move it out of harms way if you want. There are two reasons this happens:
-//  - When renaming or deleting a resolver the old code will be put in here. You can safely delete
-//    it when you're done.
-//  - You have helper methods in this file. Move them out to keep these resolver files clean.
-/*
-	type CustomResolverType struct{}
-*/

plugin/resolvergen/testdata/singlefile_enable_rewrite/gqlgen.yml

@@ -2,16 +2,16 @@ schema:
   - "testdata/schema.graphql"
 
 exec:
-  filename: testdata/singlefile/out/ignored.go
+  filename: testdata/singlefile_enable_rewrite/out/ignored.go
 model:
-  filename: testdata/singlefile/out/generated.go
+  filename: testdata/singlefile_enable_rewrite/out/generated.go
 resolver:
-  filename: testdata/singlefile/out/resolver.go
+  filename: testdata/singlefile_enable_rewrite/out/resolver.go
   type: CustomResolverType
   enable_rewrite_for_single_file: true
 
 models:
   Resolver:
-    model: github.com/99designs/gqlgen/plugin/resolvergen/testdata/singlefile/out.Resolver
+    model: github.com/99designs/gqlgen/plugin/resolvergen/testdata/singlefile_enable_rewrite/out.Resolver
 
 omit_gqlgen_version_in_file_notice: true

plugin/resolvergen/testdata/singlefile_enable_rewrite/out/resolver.go

@@ -27,3 +27,13 @@ func (r *CustomResolverType) Resolver() ResolverResolver { return &resolverCusto
 
 type queryCustomResolverType struct{ *CustomResolverType }
 type resolverCustomResolverType struct{ *CustomResolverType }
+
+// !!! WARNING !!!
+// The code below was going to be deleted when updating resolvers. It has been copied here so you have
+// one last chance to move it out of harms way if you want. There are two reasons this happens:
+//  - When renaming or deleting a resolver the old code will be put in here. You can safely delete
+//    it when you're done.
+//  - You have helper methods in this file. Move them out to keep these resolver files clean.
+/*
+	type CustomResolverType struct{}
+*/