internal void FreezeTimeNow_WithStubSystemClock_ReturnsExpectedTime()
{
// Arrange
var stubClock = new TestClock();
// Act
stubClock.FreezeTimeNow();
var result1 = stubClock.TimeNow();
Task.Delay(100).Wait();
var result2 = stubClock.TimeNow();
// Assert
Assert.Equal(result1, result2);
}