/*
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Copyright 2017 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 disk
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import (
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"bytes"
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"io/ioutil"
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"net/http"
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"net/url"
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"os"
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"path/filepath"
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"testing"
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"github.com/stretchr/testify/assert"
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)
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// copied from k8s.io/client-go/transport/round_trippers_test.go
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type testRoundTripper struct {
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Request *http.Request
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Response *http.Response
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Err error
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}
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func (rt *testRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
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rt.Request = req
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return rt.Response, rt.Err
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}
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func TestCacheRoundTripper(t *testing.T) {
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rt := &testRoundTripper{}
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cacheDir, err := ioutil.TempDir("", "cache-rt")
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defer os.RemoveAll(cacheDir)
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if err != nil {
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t.Fatal(err)
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}
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cache := newCacheRoundTripper(cacheDir, rt)
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// First call, caches the response
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req := &http.Request{
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Method: http.MethodGet,
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URL: &url.URL{Host: "localhost"},
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}
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rt.Response = &http.Response{
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Header: http.Header{"ETag": []string{`"123456"`}},
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Body: ioutil.NopCloser(bytes.NewReader([]byte("Content"))),
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StatusCode: http.StatusOK,
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}
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resp, err := cache.RoundTrip(req)
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if err != nil {
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t.Fatal(err)
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}
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content, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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t.Fatal(err)
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}
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if string(content) != "Content" {
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t.Errorf(`Expected Body to be "Content", got %q`, string(content))
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}
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// Second call, returns cached response
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req = &http.Request{
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Method: http.MethodGet,
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URL: &url.URL{Host: "localhost"},
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}
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rt.Response = &http.Response{
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StatusCode: http.StatusNotModified,
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Body: ioutil.NopCloser(bytes.NewReader([]byte("Other Content"))),
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}
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resp, err = cache.RoundTrip(req)
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if err != nil {
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t.Fatal(err)
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}
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// Read body and make sure we have the initial content
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content, err = ioutil.ReadAll(resp.Body)
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resp.Body.Close()
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if err != nil {
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t.Fatal(err)
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}
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if string(content) != "Content" {
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t.Errorf("Invalid content read from cache %q", string(content))
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}
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}
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func TestCacheRoundTripperPathPerm(t *testing.T) {
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assert := assert.New(t)
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rt := &testRoundTripper{}
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cacheDir, err := ioutil.TempDir("", "cache-rt")
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os.RemoveAll(cacheDir)
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defer os.RemoveAll(cacheDir)
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if err != nil {
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t.Fatal(err)
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}
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cache := newCacheRoundTripper(cacheDir, rt)
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// First call, caches the response
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req := &http.Request{
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Method: http.MethodGet,
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URL: &url.URL{Host: "localhost"},
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}
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rt.Response = &http.Response{
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Header: http.Header{"ETag": []string{`"123456"`}},
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Body: ioutil.NopCloser(bytes.NewReader([]byte("Content"))),
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StatusCode: http.StatusOK,
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}
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resp, err := cache.RoundTrip(req)
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if err != nil {
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t.Fatal(err)
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}
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content, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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t.Fatal(err)
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}
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if string(content) != "Content" {
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t.Errorf(`Expected Body to be "Content", got %q`, string(content))
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}
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err = filepath.Walk(cacheDir, 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 info.IsDir() {
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assert.Equal(os.FileMode(0750), info.Mode().Perm())
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} else {
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assert.Equal(os.FileMode(0660), info.Mode().Perm())
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}
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return nil
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})
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assert.NoError(err)
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}
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