Exemplo n.º 1
0
func TestValueBinding(t *testing.T) {
	t.Parallel()
	var output []interface{}

	logger := log.Logger(log.LoggerFunc(func(keyvals ...interface{}) error {
		output = keyvals
		return nil
	}))

	start := time.Date(2015, time.April, 25, 0, 0, 0, 0, time.UTC)
	now := start
	mocktime := func() time.Time {
		now = now.Add(time.Second)
		return now
	}

	lc := log.NewContext(logger).With("ts", log.Timestamp(mocktime), "caller", log.DefaultCaller)

	lc.Log("foo", "bar")
	timestamp, ok := output[1].(time.Time)
	if !ok {
		t.Fatalf("want time.Time, have %T", output[1])
	}
	if want, have := start.Add(time.Second), timestamp; want != have {
		t.Errorf("output[1]: want %v, have %v", want, have)
	}
	if want, have := "value_test.go:29", fmt.Sprint(output[3]); want != have {
		t.Errorf("output[3]: want %s, have %s", want, have)
	}

	// A second attempt to confirm the bindings are truly dynamic.
	lc.Log("foo", "bar")
	timestamp, ok = output[1].(time.Time)
	if !ok {
		t.Fatalf("want time.Time, have %T", output[1])
	}
	if want, have := start.Add(2*time.Second), timestamp; want != have {
		t.Errorf("output[1]: want %v, have %v", want, have)
	}
	if want, have := "value_test.go:42", fmt.Sprint(output[3]); want != have {
		t.Errorf("output[3]: want %s, have %s", want, have)
	}
}
Exemplo n.º 2
0
func TestValueBinding_loggingZeroKeyvals(t *testing.T) {
	t.Parallel()
	var output []interface{}

	logger := log.Logger(log.LoggerFunc(func(keyvals ...interface{}) error {
		output = keyvals
		return nil
	}))

	start := time.Date(2015, time.April, 25, 0, 0, 0, 0, time.UTC)
	now := start
	mocktime := func() time.Time {
		now = now.Add(time.Second)
		return now
	}

	logger = log.NewContext(logger).With("ts", log.Timestamp(mocktime))

	logger.Log()
	timestamp, ok := output[1].(time.Time)
	if !ok {
		t.Fatalf("want time.Time, have %T", output[1])
	}
	if want, have := start.Add(time.Second), timestamp; want != have {
		t.Errorf("output[1]: want %v, have %v", want, have)
	}

	// A second attempt to confirm the bindings are truly dynamic.
	logger.Log()
	timestamp, ok = output[1].(time.Time)
	if !ok {
		t.Fatalf("want time.Time, have %T", output[1])
	}
	if want, have := start.Add(2*time.Second), timestamp; want != have {
		t.Errorf("output[1]: want %v, have %v", want, have)
	}
}
Exemplo n.º 3
0
func Example_debugInfo() {
	logger := log.NewLogfmtLogger(os.Stdout)

	// make time predictable for this test
	baseTime := time.Date(2015, time.February, 3, 10, 0, 0, 0, time.UTC)
	mockTime := func() time.Time {
		baseTime = baseTime.Add(time.Second)
		return baseTime
	}

	logger = log.NewContext(logger).With("time", log.Timestamp(mockTime), "caller", log.DefaultCaller)

	logger.Log("call", "first")
	logger.Log("call", "second")

	// ...

	logger.Log("call", "third")

	// Output:
	// time=2015-02-03T10:00:01Z caller=example_test.go:91 call=first
	// time=2015-02-03T10:00:02Z caller=example_test.go:92 call=second
	// time=2015-02-03T10:00:03Z caller=example_test.go:96 call=third
}