125 lines
3.7 KiB
Go
125 lines
3.7 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package commands
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import (
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"bytes"
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"io/ioutil"
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"os"
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"path/filepath"
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"reflect"
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"regexp"
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"strings"
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"testing"
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"github.com/ghodss/yaml"
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"k8s.io/apimachinery/pkg/util/sets"
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"k8s.io/kubectl/pkg/kustomize/util/fs"
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)
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type DiffTestCase struct {
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Description string `yaml:"description"`
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Args []string `yaml:"args"`
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Filename string `yaml:"filename"`
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// path to the file that contains the expected output
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ExpectedDiff string `yaml:"expectedDiff"`
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ExpectedError string `yaml:"expectedError"`
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}
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func TestDiff(t *testing.T) {
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const updateEnvVar = "UPDATE_KUSTOMIZE_EXPECTED_DATA"
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updateKustomizeExpected := os.Getenv(updateEnvVar) == "true"
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noopDir, _ := regexp.Compile(`/tmp/noop-[0-9]*/`)
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transformedDir, _ := regexp.Compile(`/tmp/transformed-[0-9]*/`)
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timestamp, _ := regexp.Compile(`[0-9]{4}-(0[1-9]|1[0-2])-(0[1-9]|[1-2][0-9]|3[0-1]) (2[0-3]|[01][0-9]):[0-5][0-9]:[0-5][0-9].[0-9]* [+-]{1}[0-9]{4}`)
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fs := fs.MakeRealFS()
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testcases := sets.NewString()
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filepath.Walk("testdata", func(path string, info os.FileInfo, err error) error {
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if err != nil {
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return err
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}
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if path == "testdata" {
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return nil
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}
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name := filepath.Base(path)
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if info.IsDir() {
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if strings.HasPrefix(name, "testcase-") {
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testcases.Insert(strings.TrimPrefix(name, "testcase-"))
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}
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return filepath.SkipDir
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}
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return nil
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})
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// sanity check that we found the right folder
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if !testcases.Has("simple") {
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t.Fatalf("Error locating testcases")
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}
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for _, testcaseName := range testcases.List() {
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t.Run(testcaseName, func(t *testing.T) {
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name := testcaseName
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testcase := DiffTestCase{}
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testcaseDir := filepath.Join("testdata", "testcase-"+name)
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testcaseData, err := ioutil.ReadFile(filepath.Join(testcaseDir, "test.yaml"))
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if err != nil {
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t.Fatalf("%s: %v", name, err)
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}
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if err := yaml.Unmarshal(testcaseData, &testcase); err != nil {
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t.Fatalf("%s: %v", name, err)
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}
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diffOps := &diffOptions{
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manifestPath: testcase.Filename,
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}
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buf := bytes.NewBuffer([]byte{})
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err = diffOps.RunDiff(buf, os.Stderr, fs)
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switch {
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case err != nil && len(testcase.ExpectedError) == 0:
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t.Errorf("unexpected error: %v", err)
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case err != nil && len(testcase.ExpectedError) != 0:
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if !strings.Contains(err.Error(), testcase.ExpectedError) {
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t.Errorf("expected error to contain %q but got: %v", testcase.ExpectedError, err)
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}
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return
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case err == nil && len(testcase.ExpectedError) != 0:
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t.Errorf("unexpected no error")
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}
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actualString := string(buf.Bytes())
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actualString = noopDir.ReplaceAllString(actualString, "/tmp/noop/")
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actualString = transformedDir.ReplaceAllString(actualString, "/tmp/transformed/")
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actualString = timestamp.ReplaceAllString(actualString, "YYYY-MM-DD HH:MM:SS")
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actualBytes := []byte(actualString)
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if !updateKustomizeExpected {
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expectedBytes, err := ioutil.ReadFile(testcase.ExpectedDiff)
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if err != nil {
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t.Errorf("unexpected error: %v", err)
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}
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if !reflect.DeepEqual(actualBytes, expectedBytes) {
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t.Errorf("%s\ndoesn't equal expected:\n%s\n", actualBytes, expectedBytes)
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}
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} else {
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ioutil.WriteFile(testcase.ExpectedDiff, actualBytes, 0644)
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}
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})
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}
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}
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