public async Task Test_AddShortenedUrl_NewUrl()
{
// Setup
var urlHash = "dF";
var inputUrl = "http://www.example.com";
var randomId = (long)new Random(111).Next();
var repoMock = new Mock <IUrlShortnerRepository>();
repoMock.Setup(r => r.LookupByUrlAsync(It.IsAny <string>()))
.Returns(Task.FromResult <ShortenedUrl>(null));
repoMock.Setup(r => r.AddShortenedUrlAsync(It.IsAny <ShortenedUrl>())).Returns(
Task.FromResult <ShortenedUrl>(new ShortenedUrl
{
Id = randomId,
Url = inputUrl,
UrlHash = urlHash
}));
var uniqueIdGeneratorMock = new Mock <IUniqueIdGeneratorProvider>();
uniqueIdGeneratorMock.Setup(u => u.GenerateNextIdAsync())
.Returns(Task.FromResult(randomId));
var urlHashProviderMock = new Mock <IUrlHashProvider>();
urlHashProviderMock.Setup(h => h.GenerateHash(It.IsAny <long>()))
.Returns(urlHash);
// Action
var urlShortnerService = new UrlShortnerService(repoMock.Object, uniqueIdGeneratorMock.Object, urlHashProviderMock.Object);
var result = await urlShortnerService.AddShortenedUrl(inputUrl);
// Assert
Assert.AreEqual(result.UrlHash, urlHash);
Assert.AreEqual(result.Id, randomId);
Assert.AreEqual(result.Url, inputUrl);
}
public async Task Test_AddShortenedUrl_AlreadyExistingUrl()
{
var alreadyAddedUrlHash = "dF";
var inputUrl = "http://www.example.com";
var repoMock = new Mock <IUrlShortnerRepository>();
repoMock.Setup(r => r.LookupByUrlAsync(It.IsAny <string>())).Returns(Task.FromResult(
new ShortenedUrl
{
Id = 1,
Url = inputUrl,
UrlHash = alreadyAddedUrlHash
})
);
var urlShortnerService = new UrlShortnerService(repoMock.Object, null, null);
var result = await urlShortnerService.AddShortenedUrl(inputUrl);
Assert.AreEqual(result.UrlHash, alreadyAddedUrlHash);
Assert.AreEqual(result.Url, inputUrl);
}