{d: time.Minute - time.Millisecond, want: "59s"},
		{d: time.Minute, want: "1m"},
		{d: 2*time.Minute - time.Millisecond, want: "1m"},
		{d: time.Hour - time.Millisecond, want: "59m"},
		{d: time.Hour, want: "1h"},
		{d: 2*time.Hour - time.Millisecond, want: "1h"},
		{d: 24*time.Hour - time.Millisecond, want: "23h"},
		{d: 24 * time.Hour, want: "1d"},

	}

	tn := Now()
	tn1 := tn.Add(1 * Hour)
	Sleep(100 * Millisecond)
	d := Until(tn1)
	if d < 59*Minute {
		t.Errorf("Until(Now().Add(1*Hour)) = %v, wanted at least 59m", d)
	}
	now := Now()
	if now.After(tn1) {
		t.Errorf("Now().After(Now().Add(1*Hour)) = true, want false")
	}
	if !tn1.After(now) {
		t.Errorf("Now().Add(1*Hour).After(now) = false, want true")
	}