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 void FetchPreviewFromHtml_FailsOnInvalidData()
{
var urlPreview = new UrlPreview();
var result1 = urlPreview.FetchPreviewFromHtml(null as string);
Assert.Null(result1);
var result2 = urlPreview.FetchPreviewFromHtml(null as HtmlDocument);
Assert.Null(result2);
}
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;;;$$$$#$"));
}
public void FetchPreviewFromHtml_SuccessOnMultipleFiles()
{
var urlPreview = new UrlPreview();
const string fileName1 = "./Resources/CNN - Tapping into craft beer's online potential.html";
using (var fileStream = new FileStream(fileName1, FileMode.Open))
{
using (var reader = new StreamReader(fileStream))
{
var result = urlPreview.FetchPreviewFromHtml(reader.ReadToEnd());
Assert.NotNull(result);
}
}
const string fileName2 = "Fox Business - Stocks jump on final trading day of 2Q.html";
const string fileName3 = "Twitter - A Microsoft Tweet.html";
const string fileName4 = "Wikipedia - Hayabusa2.html";
}
public void UrlPreviewConstructorSuccess()
{
var urlPreview = new UrlPreview();
Assert.NotNull(urlPreview);
}