fix oneof difference (#2)

* fix oneof difference
* accidental line
* remove ambiguity from test

templates/go/functions.go

@@ -18,19 +18,20 @@ func register(tpl *template.Template, params pgs.Parameters) {
 	}
 
 	tpl.Funcs(map[string]interface{}{
-		"snakeCase":     fns.snakeCase,
-		"cmt":           pgs.C80,
-		"isBytes":       fns.isBytes,
-		"lit":           fns.lit,
-		"lookup":        fns.lookup,
-		"msgTyp":        fns.msgTyp,
-		"name":          fns.Name,
-		"oneof":         fns.oneofTypeName,
-		"pkg":           fns.PackageName,
-		"typ":           fns.Type,
-		"externalEnums": fns.externalEnums,
-		"enumPackages":  fns.enumPackages,
-		"render":        fns.render,
+		"fullPackageName": fns.fullPackageName,
+		"snakeCase":       fns.snakeCase,
+		"cmt":             pgs.C80,
+		"isBytes":         fns.isBytes,
+		"lit":             fns.lit,
+		"lookup":          fns.lookup,
+		"msgTyp":          fns.msgTyp,
+		"name":            fns.Name,
+		"oneof":           fns.oneofTypeName,
+		"pkg":             fns.PackageName,
+		"typ":             fns.Type,
+		"externalEnums":   fns.externalEnums,
+		"enumPackages":    fns.enumPackages,
+		"render":          fns.render,
 	})
 }
 
@@ -47,6 +48,10 @@ func (fns goSharedFuncs) pointerAccessor(field pgs.Field) string {
 	return fmt.Sprintf("&m.%s", fns.Name(field))
 }
 
+func (fns goSharedFuncs) fullPackageName(msg pgs.Message) string {
+	return fmt.Sprintf("%s.%s.%s", msg.Package().ProtoName(), fns.ImportPath(msg), fns.Name(msg))
+}
+
 func (fns goSharedFuncs) lookup(f pgs.Field, name string) string {
 	return fmt.Sprintf(
 		"_%s_%s_%s",
@@ -102,7 +107,6 @@ func (fns goSharedFuncs) oneofTypeName(f pgs.Field) pgsgo.TypeName {
 	return pgsgo.TypeName(fns.OneofOption(f)).Pointer()
 }
 
-
 func (fns goSharedFuncs) msgTyp(message pgs.Message) pgsgo.TypeName {
 	return pgsgo.TypeName(fns.Name(message))
 }

templates/go/msg.go

@@ -5,9 +5,11 @@ const msgTpl = `
 func (m {{ (msgTyp .).Pointer }}) Hash(hasher hash.Hash64) (uint64, error) {
 		if m == nil { return 0, nil }
 		if hasher == nil { hasher = fnv.New64() }
-		{{- if not (eq (len .Fields) 0) }}
 		var err error
-		{{- end }}
+		if _, err = hasher.Write([]byte("{{ fullPackageName . }}")); err != nil { 
+			return 0, err 
+		}
+
 		{{ range .NonOneOfFields }}
 			{{ render . }}
 		{{ end }}

templates/templates.go

@@ -14,19 +14,12 @@ type FilePathFn func(f pgs.File, ctx pgsgo.Context, tpl *template.Template) *pgs
 
 func Template(params pgs.Parameters) *template.Template {
 	tpl := template.New("go")
-	// shared.RegisterFunctions(tpl, params)
 	golang.Register(tpl, params)
 	return tpl
 }
 
 func FilePathFor(tpl *template.Template, moduleName string) FilePathFn {
 	switch tpl.Name() {
-	// case "h":
-	// 	return cc.CcFilePath
-	// case "cc":
-	// 	return cc.CcFilePath
-	// case "java":
-	// 	return java.JavaFilePath
 	default:
 		return func(f pgs.File, ctx pgsgo.Context, tpl *template.Template) *pgs.FilePath {
 			out := ctx.OutputPath(f)