| // Copyright 2015 The LUCI 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 httpmitm |
| |
| import ( |
| "bytes" |
| "errors" |
| "io" |
| "net/http" |
| "net/http/httptest" |
| "regexp" |
| "testing" |
| |
| . "github.com/smartystreets/goconvey/convey" |
| ) |
| |
| type record struct { |
| o Origin |
| d string |
| e error |
| } |
| |
| // shouldRecord tests whether a captured record (actual) matches the expected result: |
| // 0) Origin |
| // 1) bool (are we expecting an error?) |
| // 2) string (optional). If present, the regexp pattern that must match the data. |
| func shouldRecord(actual any, expected ...any) string { |
| r := actual.(*record) |
| o := expected[0].(Origin) |
| e := expected[1].(bool) |
| |
| var re string |
| if len(expected) == 3 { |
| re = expected[2].(string) |
| } |
| |
| if err := ShouldEqual(r.o, o); err != "" { |
| return err |
| } |
| if !e { |
| // No error. |
| if err := ShouldBeNil(r.e); err != "" { |
| return err |
| } |
| } else { |
| // Error expected. |
| if err := ShouldNotBeNil(r.e); err != "" { |
| return err |
| } |
| } |
| if re != "" { |
| m, e := regexp.MatchString(re, r.d) |
| if err := ShouldEqual(e, nil); err != "" { |
| return err |
| } |
| if err := ShouldBeTrue(m); err != "" { |
| return err |
| } |
| } |
| return "" |
| } |
| |
| func TestTransport(t *testing.T) { |
| t.Parallel() |
| |
| Convey(`A debug HTTP client`, t, func() { |
| // Generic callback-based server. Each test will set its callback. |
| var callback func() (string, error) |
| ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { |
| err := errors.New("No Callback.") |
| if callback != nil { |
| var content string |
| content, err = callback() |
| if err == nil { |
| _, err = w.Write([]byte(content)) |
| } |
| } |
| if err != nil { |
| http.Error(w, err.Error(), http.StatusInternalServerError) |
| } |
| })) |
| defer ts.Close() |
| |
| var records []*record |
| client := http.Client{ |
| Transport: &Transport{ |
| Callback: func(o Origin, data []byte, err error) { |
| records = append(records, &record{o, string(data), err}) |
| }, |
| }, |
| } |
| |
| Convey(`Successfully fetches content.`, func() { |
| callback = func() (string, error) { |
| return "Hello, client!", nil |
| } |
| resp, err := client.Post(ts.URL, "test", bytes.NewBufferString("DATA")) |
| So(err, ShouldBeNil) |
| defer resp.Body.Close() |
| |
| So(len(records), ShouldEqual, 2) |
| So(records[0], shouldRecord, Request, false, |
| "(?s:POST / HTTP/1.1\r\n(.+:.+\r\n)*\r\nDATA)") |
| So(records[1], shouldRecord, Response, false, |
| "(?s:HTTP/1.1 200 OK\r\n(.+:.+\r\n)*\r\nHello, client!)") |
| |
| body, err := io.ReadAll(resp.Body) |
| So(err, ShouldBeNil) |
| So(string(body), ShouldEqual, "Hello, client!") |
| So(resp.StatusCode, ShouldEqual, http.StatusOK) |
| }) |
| |
| Convey(`Handles HTTP error.`, func() { |
| callback = func() (string, error) { |
| return "", errors.New("Failure!") |
| } |
| resp, err := client.Post(ts.URL, "test", bytes.NewBufferString("DATA")) |
| So(err, ShouldBeNil) |
| defer resp.Body.Close() |
| |
| So(len(records), ShouldEqual, 2) |
| So(records[0], shouldRecord, Request, false, |
| "(?s:POST / HTTP/1.1\r\n(.+:.+\r\n)*\r\nDATA)") |
| So(records[1], shouldRecord, Response, false, |
| "(?s:HTTP/1.1 500 Internal Server Error\r\n(.+:.+\r\n)*\r\nFailure!)") |
| |
| body, err := io.ReadAll(resp.Body) |
| So(err, ShouldBeNil) |
| So(string(body), ShouldEqual, "Failure!\n") |
| So(resp.StatusCode, ShouldEqual, http.StatusInternalServerError) |
| }) |
| |
| Convey(`Handles connection error.`, func() { |
| _, err := client.Get("http+testingfakeprotocol://") |
| So(err, ShouldNotBeNil) |
| |
| So(len(records), ShouldEqual, 2) |
| So(records[0], shouldRecord, Request, false, |
| "(?s:GET / HTTP/1.1\r\n(.+:.+\r\n)*)") |
| So(records[1], shouldRecord, Response, true) |
| }) |
| }) |
| } |