golden
golden provides utilities for golden file tests.
package a_test
import (
"flag"
"os"
"path/filepath"
"testing"
"github.com/tenntenn/golden"
)
var (
flagUpdate bool
)
func init() {
flag.BoolVar(&flagUpdate, "update", false, "update golden files")
}
func testTarget(dir string) error {
if err := os.WriteFile(filepath.Join(dir, "a.txt"), []byte("hello"), 0700); err != nil {
return err
}
if err := os.WriteFile(filepath.Join(dir, "b.txt"), []byte("world"), 0700); err != nil {
return err
}
return nil
}
func Test(t *testing.T) {
dir := t.TempDir()
if err := testTarget(dir); err != nil {
t.Fatal("unexpected error:", err)
}
got := golden.Txtar(dir)
if flagUpdate {
golden.Update(t, "testdata", "mytest", got)
return
}
if diff := golden.Diff(t, "testdata", "mytest", got); diff != "" {
t.Error(diff)
}
}
