public async Task TestThatCreateTokenUsesTheExpiryTimeFromTheConfig()
{
//arrange
var sut = new JwtTokenManager(authSettingsOption, userManager);
//act
var token = await sut.CreateToken("username");
//assert
A.CallTo(() => authenticationSettings.TokenExpiryMinutes).MustHaveHappened();
//We calculate approx when we would expect the token to expire,
//a tolerance of 5 seconds is allowed to allow for a slow running test etc.
var approxExpectedValidToTime = DateTime.Now.AddMinutes(10);
var timeDifference = approxExpectedValidToTime.Subtract(token.ValidTo);
Assert.True(timeDifference.Seconds < 5);
}
