public void IsSameWeekWorks() { var usageService = new UsageService(Substitute.For <IGitHubServiceProvider>()); var now = DateTimeOffset.Now; Assert.True(usageService.IsSameWeek(now)); var nowWeek = GetIso8601WeekOfYear(now); DateTimeOffset nextWeek = now; for (int i = 1; i < 8; i++) { nextWeek = nextWeek.AddDays(1); var week = GetIso8601WeekOfYear(nextWeek); Assert.AreEqual(week == nowWeek, usageService.IsSameWeek(nextWeek)); } DateTimeOffset prevWeek = now; for (int i = 1; i < 8; i++) { prevWeek = prevWeek.AddDays(-1); var week = GetIso8601WeekOfYear(prevWeek); Assert.AreEqual(week == nowWeek, usageService.IsSameWeek(prevWeek)); } Assert.False(usageService.IsSameWeek(now.AddYears(1))); }