139 lines
4.2 KiB
Go
139 lines
4.2 KiB
Go
/*
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Copyright 2014 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 testing
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import (
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"io/ioutil"
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"net/http"
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"net/url"
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"reflect"
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"sync"
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)
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// TestInterface is a simple interface providing Errorf, to make injection for
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// testing easier (insert 'yo dawg' meme here).
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type TestInterface interface {
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Errorf(format string, args ...interface{})
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Logf(format string, args ...interface{})
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}
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// LogInterface is a simple interface to allow injection of Logf to report serving errors.
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type LogInterface interface {
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Logf(format string, args ...interface{})
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}
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// FakeHandler is to assist in testing HTTP requests. Notice that FakeHandler is
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// not thread safe and you must not direct traffic to except for the request
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// you want to test. You can do this by hiding it in an http.ServeMux.
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type FakeHandler struct {
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RequestReceived *http.Request
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RequestBody string
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StatusCode int
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ResponseBody string
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// For logging - you can use a *testing.T
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// This will keep log messages associated with the test.
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T LogInterface
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// Enforce "only one use" constraint.
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lock sync.Mutex
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requestCount int
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hasBeenChecked bool
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SkipRequestFn func(verb string, url url.URL) bool
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}
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func (f *FakeHandler) SetResponseBody(responseBody string) {
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f.lock.Lock()
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defer f.lock.Unlock()
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f.ResponseBody = responseBody
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}
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func (f *FakeHandler) ServeHTTP(response http.ResponseWriter, request *http.Request) {
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f.lock.Lock()
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defer f.lock.Unlock()
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if f.SkipRequestFn != nil && f.SkipRequestFn(request.Method, *request.URL) {
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response.Header().Set("Content-Type", "application/json")
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response.WriteHeader(f.StatusCode)
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response.Write([]byte(f.ResponseBody))
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return
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}
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f.requestCount++
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if f.hasBeenChecked {
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panic("got request after having been validated")
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}
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f.RequestReceived = request
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response.Header().Set("Content-Type", "application/json")
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response.WriteHeader(f.StatusCode)
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response.Write([]byte(f.ResponseBody))
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bodyReceived, err := ioutil.ReadAll(request.Body)
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if err != nil && f.T != nil {
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f.T.Logf("Received read error: %v", err)
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}
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f.RequestBody = string(bodyReceived)
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if f.T != nil {
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f.T.Logf("request body: %s", f.RequestBody)
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}
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}
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func (f *FakeHandler) ValidateRequestCount(t TestInterface, count int) bool {
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ok := true
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f.lock.Lock()
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defer f.lock.Unlock()
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if f.requestCount != count {
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ok = false
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t.Errorf("Expected %d call, but got %d. Only the last call is recorded and checked.", count, f.requestCount)
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}
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f.hasBeenChecked = true
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return ok
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}
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// ValidateRequest verifies that FakeHandler received a request with expected path, method, and body.
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func (f *FakeHandler) ValidateRequest(t TestInterface, expectedPath, expectedMethod string, body *string) {
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f.lock.Lock()
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defer f.lock.Unlock()
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if f.requestCount != 1 {
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t.Logf("Expected 1 call, but got %v. Only the last call is recorded and checked.", f.requestCount)
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}
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f.hasBeenChecked = true
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expectURL, err := url.Parse(expectedPath)
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if err != nil {
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t.Errorf("Couldn't parse %v as a URL.", expectedPath)
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}
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if f.RequestReceived == nil {
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t.Errorf("Unexpected nil request received for %s", expectedPath)
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return
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}
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if f.RequestReceived.URL.Path != expectURL.Path {
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t.Errorf("Unexpected request path for request %#v, received: %q, expected: %q", f.RequestReceived, f.RequestReceived.URL.Path, expectURL.Path)
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}
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if e, a := expectURL.Query(), f.RequestReceived.URL.Query(); !reflect.DeepEqual(e, a) {
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t.Errorf("Unexpected query for request %#v, received: %q, expected: %q", f.RequestReceived, a, e)
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}
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if f.RequestReceived.Method != expectedMethod {
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t.Errorf("Unexpected method: %q, expected: %q", f.RequestReceived.Method, expectedMethod)
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}
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if body != nil {
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if *body != f.RequestBody {
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t.Errorf("Received body:\n%s\n Doesn't match expected body:\n%s", f.RequestBody, *body)
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}
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}
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}
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