public async Task TestThatCreationOfARefreshTokenUpdatesTheUserInTheDatabase() { //arrange var sut = new JwtTokenManager(authSettingsOption, userManager); var username = "******"; //act await sut.GenerateTokenResponse(username); //assert A.CallTo(() => userManager.UpdateRefreshTokenForUser(username, A <string> .Ignored)) .MustHaveHappenedOnceExactly(); }