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NewsServiceTests.cs
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NewsServiceTests.cs
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using System;
using System.Collections.Generic;
using System.Net;
using System.Threading.Tasks;
using AutoMapper;
using SimpleFeedReader.Services;
using SimpleFeedReader.ViewModels;
using Xunit;
namespace SimpleFeedReader.Tests.Services
{
public class NewsServiceTests
{
private readonly NewsService _newsService;
public NewsServiceTests()
{
var mockMapper = new MapperConfiguration(cfg =>
cfg.AddProfile(new NewsStoryProfile()));
IMapper mapper = mockMapper.CreateMapper();
_newsService = new NewsService(mapper);
}
[Fact]
public async Task Returns_News_Stories_Given_Valid_Uri()
{
// Arrange
var feedUrl = "https://azure.microsoft.com/en-us/blog/feed/";
// Act
List<NewsStoryViewModel> result =
await _newsService.GetNews(feedUrl);
// Assert
Assert.True(result.Count > 0);
}
[Fact]
public void Throws_UriFormatException_Given_Malformed_Uri()
{
// Arrange
var feedUrl = "invalid_url";
// Act & Assert
Assert.ThrowsAsync<UriFormatException>(async () =>
await _newsService.GetNews(feedUrl));
}
[Fact]
public void Throws_WebException_Given_Unknown_Host_Uri()
{
// Arrange
var feedUrl = "https://fail/test.rss";
// Act & Assert
Assert.ThrowsAsync<WebException>(async () =>
await _newsService.GetNews(feedUrl));
}
}
}