debian-mirror-gitlab/workhorse/internal/dependencyproxy/dependencyproxy_test.go

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2021-11-18 22:05:49 +05:30
package dependencyproxy
import (
"encoding/base64"
"fmt"
"io"
"net/http"
"net/http/httptest"
"strconv"
"strings"
"testing"
"github.com/stretchr/testify/require"
"gitlab.com/gitlab-org/gitlab/workhorse/internal/api"
"gitlab.com/gitlab-org/gitlab/workhorse/internal/testhelper"
"gitlab.com/gitlab-org/gitlab/workhorse/internal/upload"
)
type fakeUploadHandler struct {
request *http.Request
body []byte
handler func(w http.ResponseWriter, r *http.Request)
}
func (f *fakeUploadHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
f.request = r
f.body, _ = io.ReadAll(r.Body)
f.handler(w, r)
}
type errWriter struct{ writes int }
func (w *errWriter) Header() http.Header { return nil }
func (w *errWriter) WriteHeader(h int) {}
// First call of Write function succeeds while all the subsequent ones fail
func (w *errWriter) Write(p []byte) (int, error) {
if w.writes > 0 {
return 0, fmt.Errorf("client error")
}
w.writes++
return len(p), nil
}
type fakePreAuthHandler struct{}
func (f *fakePreAuthHandler) PreAuthorizeHandler(handler api.HandleFunc, _ string) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
handler(w, r, &api.Response{TempPath: "../../testdata/scratch"})
})
}
func TestInject(t *testing.T) {
contentLength := 32768 + 1
content := strings.Repeat("p", contentLength)
testCases := []struct {
desc string
responseWriter http.ResponseWriter
contentLength int
handlerMustBeCalled bool
}{
{
desc: "the uploading successfully finalized",
responseWriter: httptest.NewRecorder(),
contentLength: contentLength,
handlerMustBeCalled: true,
}, {
desc: "a user failed to receive the response",
responseWriter: &errWriter{},
contentLength: contentLength,
handlerMustBeCalled: false,
}, {
desc: "the origin resource server returns partial response",
responseWriter: httptest.NewRecorder(),
contentLength: contentLength + 1,
handlerMustBeCalled: false,
},
}
testhelper.ConfigureSecret()
for _, tc := range testCases {
originResourceServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Length", strconv.Itoa(tc.contentLength))
w.Write([]byte(content))
}))
defer originResourceServer.Close()
// BodyUploader expects http.Handler as its second param, we can create a stub function and verify that
// it's only called for successful requests
handlerIsCalled := false
handlerFunc := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { handlerIsCalled = true })
bodyUploader := upload.BodyUploader(&fakePreAuthHandler{}, handlerFunc, &upload.DefaultPreparer{})
injector := NewInjector()
injector.SetUploadHandler(bodyUploader)
r := httptest.NewRequest("GET", "/target", nil)
sendData := base64.StdEncoding.EncodeToString([]byte(`{"Token": "token", "Url": "` + originResourceServer.URL + `/url"}`))
injector.Inject(tc.responseWriter, r, sendData)
require.Equal(t, tc.handlerMustBeCalled, handlerIsCalled, "a partial file must not be saved")
}
}
func TestSuccessfullRequest(t *testing.T) {
content := []byte("result")
originResourceServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Length", strconv.Itoa(len(content)))
w.Write(content)
}))
uploadHandler := &fakeUploadHandler{
handler: func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(200)
},
}
injector := NewInjector()
injector.SetUploadHandler(uploadHandler)
response := makeRequest(injector, `{"Token": "token", "Url": "`+originResourceServer.URL+`/url"}`)
require.Equal(t, "/target/upload", uploadHandler.request.URL.Path)
require.Equal(t, int64(6), uploadHandler.request.ContentLength)
require.Equal(t, content, uploadHandler.body)
require.Equal(t, 200, response.Code)
require.Equal(t, string(content), response.Body.String())
}
func TestIncorrectSendData(t *testing.T) {
response := makeRequest(NewInjector(), "")
require.Equal(t, 500, response.Code)
require.Equal(t, "Internal server error\n", response.Body.String())
}
func TestIncorrectSendDataUrl(t *testing.T) {
response := makeRequest(NewInjector(), `{"Token": "token", "Url": "url"}`)
require.Equal(t, 500, response.Code)
require.Equal(t, "Internal server error\n", response.Body.String())
}
func TestFailedOriginServer(t *testing.T) {
originResourceServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(404)
w.Write([]byte("Not found"))
}))
uploadHandler := &fakeUploadHandler{
handler: func(w http.ResponseWriter, r *http.Request) {
require.FailNow(t, "the error response must not be uploaded")
},
}
injector := NewInjector()
injector.SetUploadHandler(uploadHandler)
response := makeRequest(injector, `{"Token": "token", "Url": "`+originResourceServer.URL+`/url"}`)
require.Equal(t, 404, response.Code)
require.Equal(t, "Not found", response.Body.String())
}
func makeRequest(injector *Injector, data string) *httptest.ResponseRecorder {
w := httptest.NewRecorder()
r := httptest.NewRequest("GET", "/target", nil)
sendData := base64.StdEncoding.EncodeToString([]byte(data))
injector.Inject(w, r, sendData)
return w
}