Created
August 26, 2020 18:47
-
-
Save ascarter/346754d7ff68ebfd9e9b86de6af02dfd to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
package handlers | |
import ( | |
"bytes" | |
"fmt" | |
"log" | |
"net/http" | |
"net/http/httptest" | |
"regexp" | |
"strings" | |
"testing" | |
) | |
var ( | |
validLog = regexp.MustCompile(`(\d.\d.\d.\d) - - \[(\d{2}[/]\d{2}[/]\d{4}:\d{2}:\d{2}:\d{2} [-+]\d{4})\]\s"GET\s.*\sHTTP/1.1"\s200`) | |
) | |
func TestLogHandler(t *testing.T) { | |
expected := "Hello client" | |
// Capture logging | |
var b bytes.Buffer | |
logger := log.New(&b, "", 0) | |
fn := func(w http.ResponseWriter, r *http.Request) { | |
fmt.Fprintln(w, expected) | |
} | |
h := RequestLogHandler(http.HandlerFunc(fn), logger) | |
req, err := http.NewRequest("GET", "http://example.com/foo", nil) | |
if err != nil { | |
t.Fatal(err) | |
} | |
// Set a request address for the test | |
raddr := "127.0.0.1" | |
req.Header.Set("X-Forwarded-For", raddr) | |
w := httptest.NewRecorder() | |
h.ServeHTTP(w, req) | |
if w.Code != http.StatusOK { | |
t.Errorf("%d != %d", w.Code, http.StatusOK) | |
} | |
body := strings.TrimSpace(w.Body.String()) | |
if body != expected { | |
t.Errorf("%s != %s", body, expected) | |
} | |
messages := strings.FieldsFunc(b.String(), func(c rune) bool { | |
return c == '\n' | |
}) | |
if len(messages) != 1 { | |
t.Fatalf("Expected %d messages but got %d: %q", 1, len(messages), messages) | |
} | |
if !validLog.MatchString(messages[0]) { | |
t.Errorf("%q not valid log message format", messages[0]) | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment