public async Task ExecuteAsync_WhenCalled_ReturnRefreshableTokenFromMicrosoftGraphRepository()
        {
            IRefreshableToken refreshableToken = _fixture.BuildRefreshableTokenMock().Object;
            CommandHandler    sut = CreateSut(refreshableToken);

            IRefreshTokenForMicrosoftGraphCommand command = CreateCommandMock().Object;
            IRefreshableToken result = await sut.ExecuteAsync(command);

            Assert.That(result, Is.EqualTo(refreshableToken));
        }
        public async Task ExecuteAsync_WhenCalled_AssertRefreshTokenAsyncWasCalledOnMicrosoftGraphRepository()
        {
            CommandHandler sut = CreateSut();

            Uri redirectUri = CreateUri();
            IRefreshableToken refreshableToken            = _fixture.BuildRefreshableTokenMock().Object;
            IRefreshTokenForMicrosoftGraphCommand command = CreateCommandMock(redirectUri, refreshableToken).Object;
            await sut.ExecuteAsync(command);

            _microsoftGraphRepositoryMock.Verify(m => m.RefreshTokenAsync(It.Is <Uri>(value => value == redirectUri), It.Is <IRefreshableToken>(value => value == refreshableToken)), Times.Once);
        }