mirror of https://github.com/helm/helm
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
93 lines
2.4 KiB
93 lines
2.4 KiB
/*
|
|
Copyright The Helm Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package test
|
|
|
|
import (
|
|
"bytes"
|
|
"flag"
|
|
"io/ioutil"
|
|
"path/filepath"
|
|
|
|
"github.com/pkg/errors"
|
|
)
|
|
|
|
// UpdateGolden writes out the golden files with the latest values, rather than failing the test.
|
|
var updateGolden = flag.Bool("update", false, "update golden files")
|
|
|
|
// TestingT describes a testing object compatible with the critical functions from the testing.T type
|
|
type TestingT interface {
|
|
Fatal(...interface{})
|
|
Fatalf(string, ...interface{})
|
|
HelperT
|
|
}
|
|
|
|
// HelperT describes a test with a helper function
|
|
type HelperT interface {
|
|
Helper()
|
|
}
|
|
|
|
// AssertGoldenBytes asserts that the give actual content matches the contents of the given filename
|
|
func AssertGoldenBytes(t TestingT, actual []byte, filename string) {
|
|
t.Helper()
|
|
|
|
if err := compare(actual, path(filename)); err != nil {
|
|
t.Fatalf("%v", err)
|
|
}
|
|
}
|
|
|
|
// AssertGoldenString asserts that the given string matches the contents of the given file.
|
|
func AssertGoldenString(t TestingT, actual, filename string) {
|
|
t.Helper()
|
|
|
|
if err := compare([]byte(actual), path(filename)); err != nil {
|
|
t.Fatalf("%v", err)
|
|
}
|
|
}
|
|
|
|
func path(filename string) string {
|
|
if filepath.IsAbs(filename) {
|
|
return filename
|
|
}
|
|
return filepath.Join("testdata", filename)
|
|
}
|
|
|
|
func compare(actual []byte, filename string) error {
|
|
if err := update(filename, actual); err != nil {
|
|
return err
|
|
}
|
|
|
|
expected, err := ioutil.ReadFile(filename)
|
|
if err != nil {
|
|
return errors.Wrapf(err, "unable to read testdata %s", filename)
|
|
}
|
|
if !bytes.Equal(expected, actual) {
|
|
return errors.Errorf("does not match golden file %s\n\nWANT:\n'%s'\n\nGOT:\n'%s'\n", filename, expected, actual)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func update(filename string, in []byte) error {
|
|
if !*updateGolden {
|
|
return nil
|
|
}
|
|
return ioutil.WriteFile(filename, normalize(in), 0666)
|
|
}
|
|
|
|
func normalize(in []byte) []byte {
|
|
return bytes.Replace(in, []byte("\r\n"), []byte("\n"), -1)
|
|
}
|