func TestRequestDoesntChange(t *testing.T) {
const reqBody = "foo bar"
errc := make(chan error, 1)
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
errc <- func() error {
b, err := ioutil.ReadAll(r.Body)
if err != nil {
return err
}
if reqBody != string(b) {
return fmt.Errorf("expected request body %q, got %q", reqBody, b)
}
return nil
}()
}))
defer ts.Close()
c := httplog.NewTransport(nil, false, noLog).Client()
if _, err := c.Post(ts.URL, "text", strings.NewReader(reqBody)); err != nil {
t.Fatalf("get: %v", err)
}
if err := <-errc; err != nil {
t.Fatal(err)
}
}
func TestResponseDoesntChange(t *testing.T) {
const resBody = "foo bar"
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprint(w, resBody)
}))
defer ts.Close()
c := httplog.NewTransport(nil, false, noLog).Client()
res, err := c.Get(ts.URL)
if err != nil {
t.Fatalf("get: %v", err)
}
b, err := ioutil.ReadAll(res.Body)
if err != nil {
t.Fatalf("read response: %v", err)
}
if resBody != string(b) {
t.Fatalf("expected request response %q, got %q", resBody, b)
}
}
func TestMessagesAreLogged(t *testing.T) {
const (
start = "^httplog: "
end = "(\r\n)*$"
get = "GET / HTTP/1.1\r\n"
post = "POST / HTTP/1.1\r\n"
host = "Host: 127.0.0.1:[0-9]+\r\n"
contentType = "Content-Type: text/plain(; charset=utf-8)?\r\n"
contentLength = "Content-Length: [0-9]+\r\n"
date = "Date: [A-Za-z]+, [0-9]+ [A-Za-z]+ [0-9]+ ([0-9]+:?)+ GMT\r\n"
ok = "HTTP/1.1 200 OK\r\n"
)
var tests = []struct {
desc string
logBody bool
reqBody, resBody io.Reader
reqRegexp, resRegexp string
}{
{
"request and response empty and body not logged",
false, nil, nil,
start + get + host + end,
start + ok + end,
},
{
"request not empty, response empty and body not logged",
false, strings.NewReader("foo"), nil,
start + post + host + contentType + end,
start + ok + end,
},
{
"request empty, response not empty, and body not logged",
false, nil, strings.NewReader("bar"),
start + get + host + end,
start + ok + contentLength + contentType + date + end,
},
{
"request and response not empty and body not logged",
false, strings.NewReader("foo"), strings.NewReader("bar"),
start + post + host + contentType + end,
start + ok + contentLength + contentType + date + end,
},
{
"request and response empty and body logged",
true, nil, nil,
start + get + host + end,
start + ok + contentType + date + contentLength + end,
},
{
"request not empty, response empty and body logged",
true, strings.NewReader("foo"), nil,
start + post + host + contentType + "\r\nfoo" + end,
start + ok + contentLength + contentType + date + end,
},
{
"request empty, response not empty, and body logged",
true, nil, strings.NewReader("bar"),
start + get + host + end,
start + ok + contentLength + contentType + date + "\r\nbar" + end,
},
{
"request and response not empty and body logged",
true, strings.NewReader("foo"), strings.NewReader("bar"),
start + post + host + contentType + "\r\nfoo" + end,
start + ok + contentLength + contentType + date + "\r\nbar" + end,
},
}
for i, test := range tests {
var logs []string
log := func(format string, vs ...interface{}) {
logs = append(logs, fmt.Sprintf(format, vs...))
}
err := func() error {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if test.resBody != nil {
io.Copy(w, test.resBody)
}
}))
defer ts.Close()
c := httplog.NewTransport(nil, test.logBody, log).Client()
if test.reqBody == nil {
c.Get(ts.URL)
} else {
c.Post(ts.URL, "text/plain", test.reqBody)
}
if len(logs) != 2 {
return fmt.Errorf("expected two logs, got %v: %#v", len(logs), logs)
}
if !regexp.MustCompile(test.reqRegexp).MatchString(logs[0]) {
return fmt.Errorf("bad request log:\n%q\ndoesn't match\n%q", logs[0], test.reqRegexp)
}
if !regexp.MustCompile(test.resRegexp).MatchString(logs[1]) {
return fmt.Errorf("bad response log:\n%q\ndoesn't match\n%q", logs[1], test.resRegexp)
}
return nil
}()
if err != nil {
t.Errorf("test case %v %s failed: %v", i, test.desc, err)
}
}
}