public async Task FetchPreviewFromUrlAsync_SuccessOnMultipleUrls()
{
var urlPreview = new UrlPreview();
var task1 = await urlPreview.FetchPreviewFromUrlAsync("https://www.cnn.com");
Assert.NotNull(task1);
Assert.NotNull(task1.Title);
Assert.NotNull(task1.Description);
var task2 = await urlPreview.FetchPreviewFromUrlAsync("https://www.foxnews.com");
Assert.NotNull(task2);
Assert.NotNull(task2.Title);
Assert.NotNull(task2.Description);
var task3 = await urlPreview.FetchPreviewFromUrlAsync("https://www.bloomberg.com");
Assert.NotNull(task3);
Assert.NotNull(task3.Title);
Assert.NotNull(task3.Description);
var task4 = await urlPreview.FetchPreviewFromUrlAsync("https://techcrunch.com");
Assert.NotNull(task4);
Assert.NotNull(task4.Title);
Assert.NotNull(task4.Description);
}
public async Task FetchPreviewFromUrlAsync_FailsOnInvalidUrl()
{
var urlPreview = new UrlPreview();
var task1 = await urlPreview.FetchPreviewFromUrlAsync("");
Assert.Null(task1);
var task2 = await urlPreview.FetchPreviewFromUrlAsync(null as string);
Assert.Null(task2);
var task3 = await urlPreview.FetchPreviewFromUrlAsync(null as Uri);
Assert.Null(task3);
await Assert.ThrowsAsync <Exception>(() => urlPreview.FetchPreviewFromUrlAsync("this is not a url lol;;;$$$$#$"));
}