public void SutIsTimeProvider(DefaultTimeProvider sut)
{
// Fixture setup
// Exercise system
// Verify outcome
Assert.IsAssignableFrom<TimeProvider>(sut);
// Teardown
}
public void UtcNowReturnsCurrentTime(DefaultTimeProvider sut)
{
// Fixture setup
var before = DateTime.UtcNow;
// Exercise system
DateTime result = sut.UtcNow;
// Verify outcome
var after = DateTime.UtcNow;
Assert.True(before <= result && result <= after, "UtcNow should reflect current time");
// Teardown
}
