public void Should_fail_when_the_given_interval_is_negative()
            {
                var systemStopwatch = new SystemStopwatch(Stopwatch.StartNew());

                systemStopwatch.HasPassed(TimeSpan.Zero).Should().BeTrue();

                Thread.Sleep(1.Seconds());

                systemStopwatch.HasPassed(TimeSpan.Zero).Should().BeTrue();
            }
            public void Should_always_return_true_if_the_given_interval_is_empty()
            {
                var systemStopwatch = new SystemStopwatch(Stopwatch.StartNew());

                systemStopwatch.HasPassed(TimeSpan.Zero).Should().BeTrue();

                Thread.Sleep(1.Seconds());

                systemStopwatch.HasPassed(TimeSpan.Zero).Should().BeTrue();
            }
            public void Should_indicate_that_elapsed_time_is_less_than_in_the_given_interval()
            {
                var systemStopwatch = new SystemStopwatch(Stopwatch.StartNew());

                var hasPassed = systemStopwatch.HasPassed(1.Hours());

                hasPassed.Should().BeFalse();
            }
            public void Should_indicate_that_elapsed_time_is_more_or_equal_than_in_the_given_interval()
            {
                var systemStopwatch = new SystemStopwatch(Stopwatch.StartNew());

                Thread.Sleep(1.Seconds());

                var hasPassed = systemStopwatch.HasPassed(1.Seconds());

                hasPassed.Should().BeTrue();
            }