public async Task GetNewsAsync_WhenCalled_AssertGetNewsAsyncWasCalledOnNewRepository()
{
INewsLogic sut = CreateSut();
await sut.GetNewsAsync(25);
_newRepositoryMock.Verify(m => m.GetNewsAsync(), Times.Once);
}
public async Task GetNewsAsync_WhenCalled_ExpectNoError()
{
INewsLogic sut = CreateSut();
await sut.GetNewsAsync(25);
_exceptionHandlerMock.Verify(m => m.HandleAsync(It.IsAny <Exception>()), Times.Never);
}
public async Task GetNewsAsync_WhenCalledAndGetNewsAsyncOnNewsRepositoryReturnsNull_ReturnsEmptyCollection()
{
INewsLogic sut = CreateSut(getNewsAsyncReturnsNull: true);
IEnumerable <INews> result = await sut.GetNewsAsync(25);
Assert.IsNotNull(result);
Assert.IsFalse(result.Any());
}
public async Task GetNewsAsync_WhenCalledAndExceptionOccurs_AssertHandleAsyncWasCalledOnExceptionHandler()
{
Exception exception = new Exception();
INewsLogic sut = CreateSut(provokedException: exception);
await sut.GetNewsAsync(25);
_exceptionHandlerMock.Verify(m => m.HandleAsync(It.Is <Exception>(ex => ex == exception)), Times.Once);
}
public async Task GetNewsAsync_WhenCalledAndGetNewsAsyncOnNewsRepositoryReturnsEmptyCollection_ReturnsEmptyCollection()
{
IEnumerable <INews> news = BuildNews(numberOfNews: 0);
INewsLogic sut = CreateSut(news: news);
IEnumerable <INews> result = await sut.GetNewsAsync(25);
Assert.IsNotNull(result);
Assert.IsFalse(result.Any());
}
public async Task GetNewsAsync_WhenCalledAndExceptionOccurs_ReturnsEmptyCollection()
{
Exception exception = new Exception();
INewsLogic sut = CreateSut(provokedException: exception);
IEnumerable <INews> result = await sut.GetNewsAsync(25);
Assert.IsNotNull(result);
Assert.IsFalse(result.Any());
}
public async Task GetNewsAsync_WhenCalledAndGetNewsAsyncOnNewsRepositoryReturnsEqualToQueried_ReturnsCollectionWithAllElements()
{
IEnumerable <INews> news = BuildNews(numberOfNews: 25);
INewsLogic sut = CreateSut(news: news);
IEnumerable <INews> result = await sut.GetNewsAsync(25);
Assert.IsNotNull(result);
Assert.AreEqual(25, result.Count());
Assert.IsTrue(result.All(item => news.Contains(item)));
}
public async Task BuildAsync(IDashboardSettings dashboardSettings, IDashboard dashboard)
{
if (dashboardSettings == null)
{
throw new ArgumentNullException(nameof(dashboardSettings));
}
if (dashboard == null)
{
throw new ArgumentNullException(nameof(dashboard));
}
try
{
IEnumerable <INews> news = await _newLogic.GetNewsAsync(dashboardSettings.NumberOfNews);
dashboard.Replace(news);
}
catch (Exception ex)
{
await _exceptionHandler.HandleAsync(ex);
}
}