add test with nested marshaler interface

Makefile

@@ -26,30 +26,32 @@ generate: build
 		./tests/members_unescaped.go \
 		./tests/intern.go \
 		./tests/nocopy.go \
+		./tests/escaping.go
+	bin/easyjson -all \
+		./tests/data.go \
+ 		./tests/nothing.go \
+ 		./tests/errors.go \
+ 		./tests/html.go \
+ 		./tests/type_declaration_skip.go
+	bin/easyjson \
+		./tests/nested_easy.go \
+		./tests/named_type.go \
+		./tests/custom_map_key_type.go \
+		./tests/embedded_type.go \
+		./tests/reference_to_pointer.go \
+		./tests/key_marshaler_map.go \
+		./tests/unknown_fields.go \
+		./tests/type_declaration.go \
+		./tests/members_escaped.go \
+		./tests/intern.go \
+		./tests/nocopy.go \
 		./tests/escaping.go \
-
-	bin/easyjson -all ./tests/data.go
-	bin/easyjson -all ./tests/nothing.go
-	bin/easyjson -all ./tests/errors.go
-	bin/easyjson -all ./tests/html.go
+		./tests/nested_marshaler.go
 	bin/easyjson -snake_case ./tests/snake.go
 	bin/easyjson -omit_empty ./tests/omitempty.go
 	bin/easyjson -build_tags=use_easyjson -disable_members_unescape ./benchmark/data.go
-	bin/easyjson ./tests/nested_easy.go
-	bin/easyjson ./tests/named_type.go
-	bin/easyjson ./tests/custom_map_key_type.go
-	bin/easyjson ./tests/embedded_type.go
-	bin/easyjson ./tests/reference_to_pointer.go
-	bin/easyjson ./tests/key_marshaler_map.go
 	bin/easyjson -disallow_unknown_fields ./tests/disallow_unknown.go
-	bin/easyjson ./tests/unknown_fields.go
-	bin/easyjson ./tests/type_declaration.go
-	bin/easyjson -all ./tests/type_declaration_skip.go
-	bin/easyjson ./tests/members_escaped.go
 	bin/easyjson -disable_members_unescape ./tests/members_unescaped.go
-	bin/easyjson ./tests/intern.go
-	bin/easyjson ./tests/nocopy.go
-	bin/easyjson ./tests/escaping.go
 
 test: generate
 	go test \

tests/basic_test.go

@@ -231,6 +231,33 @@ func TestNestedEasyJsonMarshal(t *testing.T) {
 	}
 }
 
+func TestNestedMarshaler(t *testing.T) {
+	s := NestedMarshaler{
+		Value: &StructWithMarshaler{
+			Value: 5,
+		},
+		Value2: 10,
+	}
+
+	data, err := s.MarshalJSON()
+	if err != nil {
+		t.Errorf("Can't marshal NestedMarshaler: %s", err)
+	}
+
+	s2 := NestedMarshaler {
+		Value: &StructWithMarshaler{},
+	}
+
+	err = s2.UnmarshalJSON(data)
+	if err != nil {
+		t.Errorf("Can't unmarshal NestedMarshaler: %s", err)
+	}
+
+	if !reflect.DeepEqual(s2, s) {
+		t.Errorf("easyjson.Unmarshal() = %#v; want %#v", s2, s)
+	}
+}
+
 func TestUnmarshalStructWithEmbeddedPtrStruct(t *testing.T) {
 	var s = StructWithInterface{Field2: &EmbeddedStruct{}}
 	var err error