Esempio n. 1
0
func TestContextMissingValue(t *testing.T) {
	t.Parallel()
	var output []interface{}
	logger := log.Logger(log.LoggerFunc(func(keyvals ...interface{}) error {
		output = keyvals
		return nil
	}))

	lc := log.NewContext(logger)

	lc.Log("k")
	if want, have := 2, len(output); want != have {
		t.Errorf("want len(output) == %v, have %v", want, have)
	}
	if want, have := log.ErrMissingValue, output[1]; want != have {
		t.Errorf("want %#v, have %#v", want, have)
	}

	lc.With("k1").WithPrefix("k0").Log("k2")
	if want, have := 6, len(output); want != have {
		t.Errorf("want len(output) == %v, have %v", want, have)
	}
	for i := 1; i < 6; i += 2 {
		if want, have := log.ErrMissingValue, output[i]; want != have {
			t.Errorf("want output[%d] == %#v, have %#v", i, want, have)
		}
	}
}
Esempio n. 2
0
// Test that Context.Log has a consistent function stack depth when binding
// log.Valuers, regardless of how many times Context.With has been called or
// whether Context.Log is called via an interface typed variable or a concrete
// typed variable.
func TestContextStackDepth(t *testing.T) {
	fn := fmt.Sprintf("%n", stack.Caller(0))

	var output []interface{}

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

	stackValuer := log.Valuer(func() interface{} {
		for i, c := range stack.Trace() {
			if fmt.Sprintf("%n", c) == fn {
				return i
			}
		}
		t.Fatal("Test function not found in stack trace.")
		return nil
	})

	concrete := log.NewContext(logger).With("stack", stackValuer)
	var iface log.Logger = concrete

	// Call through interface to get baseline.
	iface.Log("k", "v")
	want := output[1].(int)

	for len(output) < 10 {
		concrete.Log("k", "v")
		if have := output[1]; have != want {
			t.Errorf("%d Withs: have %v, want %v", len(output)/2-1, have, want)
		}

		iface.Log("k", "v")
		if have := output[1]; have != want {
			t.Errorf("%d Withs: have %v, want %v", len(output)/2-1, have, want)
		}

		wrapped := log.NewContext(concrete)
		wrapped.Log("k", "v")
		if have := output[1]; have != want {
			t.Errorf("%d Withs: have %v, want %v", len(output)/2-1, have, want)
		}

		concrete = concrete.With("k", "v")
		iface = concrete
	}
}
Esempio n. 3
0
func TestValueBinding(t *testing.T) {
	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:28", 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:41", fmt.Sprint(output[3]); want != have {
		t.Errorf("output[3]: want %s, have %s", want, have)
	}
}
Esempio n. 4
0
func TestValueBinding_loggingZeroKeyvals(t *testing.T) {
	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)
	}
}