codegentest

func Golden ¶

func Golden(t testing.TB, results []*Result, update bool)

Golden compares the results with golden files. Golden creates read a golden file which name is codegen.Generator.Name + ".golden". The golden file is stored in same directory of the package. If Golden cannot find a golden file or the result of Generator test is not same with the golden, Golden reports error via *testing.T. If update is true, golden files would be updated.

var flagUpdate bool

func TestMain(m *testing.M) {
	flag.BoolVar(&flagUpdate, "update", false, "update the golden files")
	flag.Parse()
	os.Exit(m.Run())
}

func TestGenerator(t *testing.T) {
	rs := codegentest.Run(t, codegentest.TestData(), example.Generator, "example")
	codegentest.Golden(t, rs, flagUpdate)
}