public void Constructor_ValidInput_DetailsCorrect()
{
// Fixture setup
var expectedTitle = "News title";
var expectedText = "News text";
Uri expectedImageSource = null;
var expectedPublicationDate = DateTimeOffset.Now;
var channelName = "News channel";
var expectedPublicationDetails = expectedPublicationDate.ToString("dd.MM.yyy - HH:mm") + " • " + channelName;
var newsChannel = new NewsChannel(channelName, new Uri("http://news.com/rss"));
var newsItem = new NewsItem(expectedTitle, expectedText, expectedPublicationDate, expectedImageSource);
// Exercise system
var viewModel = new NewsDetailsViewModel(newsChannel, newsItem);
// Verify outcome
Assert.AreEqual(viewModel.Title, expectedTitle);
Assert.AreEqual(viewModel.Text, expectedText);
Assert.AreEqual(viewModel.PublicationDate, expectedPublicationDate);
Assert.AreEqual(viewModel.ImageSource, expectedImageSource);
Assert.AreEqual(viewModel.PublicationDetails, expectedPublicationDetails);
// Teardown
}
public void Constructor_NullNewsItem_ExceptionThrown()
{
// Fixture setup
var newsChannel = new NewsChannel("News channel", new Uri("http://news.com/rss"));
NewsItem newsItem = null;
// Exercise system
// Verify outcome
Assert.ThrowsException<ArgumentNullException>
(() => new NewsDetailsViewModel(newsChannel, newsItem));
// Teardown
}
protected override async void OnNavigatedTo(NavigationEventArgs e)
{
if (e.NavigationMode == NavigationMode.New)
{
var vm = new NewsFeedViewModel(new HttpClientProxy(), new SyndicationFeedDecorator(), new StatusBarProxy());
Feed.DataContext = vm;
Feed.FeedItemSelected += OnFeedItemSelected;
var lentaRu = new NewsChannel("Lenta.ru", new Uri("http://lenta.ru/rss"));
var gazetaRu = new NewsChannel("Gazeta.ru", new Uri("http://www.gazeta.ru/export/rss/lenta.xml"));
await vm.GetLatestNewsAsync(lentaRu, gazetaRu);
}
}
public async Task GetLatestNewsAsync_NullRssParser_ExceptionThrown()
{
// Fixture setup
var name = "News channel";
var feedUri = new Uri("http://news.com/rss");
IHttpClient httpClient = new HttpClientMock();
IRssParser rssParser = null;
var newsChannel = new NewsChannel(name, feedUri);
// Exercise system
var task = newsChannel.GetLatestNewsAsync(httpClient, rssParser);
// Verify outcome
await AssertEx.ThrowsExceptionAsync<ArgumentNullException>(() => task);
// Teardown
}
public async Task GetLatestNewsAsync_MockForTwoNewsChannels_ValidNewsItemsSortingOrder()
{
// Fixture setup
var firstItem = new NewsItem("First item", "News text", DateTimeOffset.Now, null);
var secondItem = new NewsItem("Second item", "News text", firstItem.PublicationDate.AddSeconds(1), null);
var requestCounter = 0;
Func<string, NewsFeed> parsingFunc = rss =>
{
requestCounter++;
if (requestCounter == 1) return new NewsFeed(new[] { firstItem });
return new NewsFeed(new[] { secondItem });
};
IHttpClient httpClient = new HttpClientMock();
IRssParser rssParser = new RssParserMock { CustomParsingFunction = parsingFunc };
IProgressIndicator progressIndicator = new ProgressIndicatorMock();
var viewModel = new NewsFeedViewModel(httpClient, rssParser, progressIndicator);
var newsChannel = new NewsChannel("News channel", new Uri("http://news.com/rss"));
var expectedFirstItemTitle = secondItem.Title;
// Exercise system
await viewModel.GetLatestNewsAsync(newsChannel, newsChannel);
// Verify outcome
Assert.AreEqual(viewModel.News[0].Title, expectedFirstItemTitle);
// Teardown
}
public async Task GetLatestNewsAsync_MockForTwoNewsChannels_ValidItemCount()
{
// Fixture setup
var newsItem = new NewsItem("News item", "News text", DateTimeOffset.Now, null);
Func<string, NewsFeed> parsingFunc = rss => new NewsFeed(new[] { newsItem });
IHttpClient httpClient = new HttpClientMock();
IRssParser rssParser = new RssParserMock { CustomParsingFunction = parsingFunc };
IProgressIndicator progressIndicator = new ProgressIndicatorMock();
var viewModel = new NewsFeedViewModel(httpClient, rssParser, progressIndicator);
var newsChannel = new NewsChannel("News channel", new Uri("http://news.com/rss"));
var expectedNewsCount = 2;
// Exercise system
await viewModel.GetLatestNewsAsync(newsChannel, newsChannel);
// Verify outcome
Assert.AreEqual(viewModel.News.Count, expectedNewsCount);
// Teardown
}
public async Task GetLatestNewsAsync_NullNewsFeedFromNewsChannel_ExceptionThrown()
{
// Fixture setup
IHttpClient httpClient = new HttpClientMock();
IRssParser rssParser = new RssParserMock();
IProgressIndicator progressIndicator = new ProgressIndicatorMock();
var viewModel = new NewsFeedViewModel(httpClient, rssParser, progressIndicator);
var newsChannel = new NewsChannel("News channel", new Uri("http://news.com/rss"));
// Exercise system
var task = viewModel.GetLatestNewsAsync(newsChannel);
// Verify outcome
await AssertEx.ThrowsExceptionAsync<NullReferenceException>(() => task);
// Teardown
}
public async Task GetLatestNewsAsync_UsingLentaRuSampleData_ValidNewsFeed()
{
// Fixture setup
var name = "News channel";
var feedUri = new Uri("http://news.com/rss");
IHttpClient httpClient = new HttpClientMock {SampleDataPreference = SampleDataPreference.LentaRu};
IRssParser rssParser = new SyndicationFeedDecorator();
var newsChannel = new NewsChannel(name, feedUri);
var expectedCount = 3;
var expectedFirstItemTitle = "На побережье французского острова в Индийском океане нашли обломок самолета";
var expectedFirstItemText = "На побережье французского острова Реюньон, расположенного в Индийском океане к востоку от Мадагаскара, найден обломок неизвестного самолета. Специалисты считают, что трехметровая деталь могла принадлежать малайзийскому «Боингу», который пропал в ночь на 8 марта 2014 года.";
var expectedFirstItemPublicationDate = new DateTimeOffset(2015, 7, 29, 19, 23, 0, TimeSpan.FromHours(3));
var expectedFirstItemImageSource = new Uri("http://icdn.lenta.ru/images/2015/07/29/18/20150729183227894/pic_df052e4cec4b74c4b14d369026bcef69.jpg");
// Exercise system
var newsFeed = await newsChannel.GetLatestNewsAsync(httpClient, rssParser);
var feedItems = newsFeed.Items.ToList();
var firstItem = feedItems[0];
// Verify outcome
Assert.AreEqual(feedItems.Count, expectedCount);
Assert.AreEqual(firstItem.Title, expectedFirstItemTitle);
Assert.AreEqual(firstItem.Text, expectedFirstItemText);
Assert.AreEqual(firstItem.PublicationDate, expectedFirstItemPublicationDate);
Assert.AreEqual(firstItem.ImageSource, expectedFirstItemImageSource);
// Teardown
}
public async Task GetLatestNewsAsync_UsingGazetaRuSampleData_NoHtmlSpecialEntitiesInText()
{
// Fixture setup
var name = "News channel";
var feedUri = new Uri("http://news.com/rss");
IHttpClient httpClient = new HttpClientMock { SampleDataPreference = SampleDataPreference.GazetaRu };
IRssParser rssParser = new SyndicationFeedDecorator();
var newsChannel = new NewsChannel(name, feedUri);
var expectedResult = false;
// Exercise system
var newsFeed = await newsChannel.GetLatestNewsAsync(httpClient, rssParser);
var feedItems = newsFeed.Items.ToList();
var thirdItem = feedItems[2];
var itemContainsQuotationMark = thirdItem.Text.Contains(""");
// Verify outcome
Assert.AreEqual(itemContainsQuotationMark, expectedResult);
// Teardown
}
public async Task GetLatestNewsAsync_UsingGazetaRuSampleData_ValidNewsFeed()
{
// Fixture setup
var name = "News channel";
var feedUri = new Uri("http://news.com/rss");
IHttpClient httpClient = new HttpClientMock { SampleDataPreference = SampleDataPreference.GazetaRu };
IRssParser rssParser = new SyndicationFeedDecorator();
var newsChannel = new NewsChannel(name, feedUri);
var expectedCount = 3;
var expectedFirstItemTitle = "Минюст включил Национальный фонд в поддержку демократии в список нежелательных организаций";
var expectedFirstItemText = "Министерство юстиции России включило Национальный фонд в поддержку демократии в список иностранных и международных неправительственных организаций, деятельность которых на территории страны признана нежелательной. Об этом сообщается на ...";
var expectedFirstItemPublicationDate = new DateTimeOffset(2015, 7, 29, 19, 17, 5, TimeSpan.FromHours(3));
Uri expectedFirstItemImageSource = null;
// Exercise system
var newsFeed = await newsChannel.GetLatestNewsAsync(httpClient, rssParser);
var feedItems = newsFeed.Items.ToList();
var firstItem = feedItems[0];
// Verify outcome
Assert.AreEqual(feedItems.Count, expectedCount);
Assert.AreEqual(firstItem.Title, expectedFirstItemTitle);
Assert.AreEqual(firstItem.Text, expectedFirstItemText);
Assert.AreEqual(firstItem.PublicationDate, expectedFirstItemPublicationDate);
Assert.AreEqual(firstItem.ImageSource, expectedFirstItemImageSource);
// Teardown
}
