test(json): add test case for #63

json/json_test.go

@@ -1578,7 +1578,6 @@ func TestGithubIssue41(t *testing.T) {
 			"expected: ", expectedString,
 		)
 	}
-
 }
 
 func TestGithubIssue44(t *testing.T) {
@@ -1602,6 +1601,35 @@ func (r *rawJsonString) UnmarshalJSON(b []byte) error {
 	return nil
 }
 
+func TestGithubIssue63(t *testing.T) {
+	expectedString := `{"my_field":"test","code":0}`
+
+	type MyStruct struct {
+		MyField string `json:"my_field,omitempty"`
+	}
+
+	type MyStruct2 struct {
+		*MyStruct
+		Code int `json:"code"`
+	}
+
+	input := MyStruct2{
+		MyStruct: &MyStruct{
+			MyField: "test",
+		},
+		Code: 0,
+	}
+
+	if b, err := Marshal(input); err != nil {
+		t.Error(err)
+	} else if string(b) != expectedString {
+		t.Error(
+			"got: ", string(b),
+			"expected: ", expectedString,
+		)
+	}
+}
+
 func TestSetTrustRawMessage(t *testing.T) {
 	buf := &bytes.Buffer{}
 	enc := NewEncoder(buf)