public async Task NewsServiceAllAsyncShould_ReturnsNewsForPageOneByDefault()
{
//Arrange
var context = this.GetDbContext();
this.PopulateData(context);
var newsService = new NewsService(context, mapper);
// Act
var returnedData = await newsService.AllAsync();
var expectedFirstPageNews = context.News.OrderByDescending(m => m.CreatedOn).Take(NewsPageSize).ToList();
// Assert
foreach (var returnedModel in returnedData)
{
var testModel = expectedFirstPageNews.First(n => returnedModel.Id == n.Id);
Assert.NotNull(testModel);
Assert.True(CompareNewsWithNewsListingServiceModelExact(returnedModel, testModel));
}
}
public async Task AllAsyncShouldRerutnCorectedOrderedNewsArticles()
{
//Arrange
var dbOptions = new DbContextOptionsBuilder <UndergroundStationDbContext>()
.UseInMemoryDatabase("UndergroundStationTestDb")
.Options;
var db = new UndergroundStationDbContext(dbOptions);
var newsService = new NewsService(db);
//Act
var result = await newsService.AllAsync(1);
//Assert
result
.Should()
.Match
(r => r.ElementAt(0).Id == 2 &&
r.ElementAt(1).Id == 3 &&
r.ElementAt(2).Id == 1)
.And
.HaveCount(3);
}
public async Task AllAsync_ShouldReturnNineRecordsForFirstPage_WhenPageIsNotPassed()
{
// Arrange
var context = this.GetDbContext();
this.PopulateData(context);
var newsService = new NewsService(context, mapper);
// Act
var returnedData = await newsService.AllAsync();
// Assert
Assert.AreEqual(returnedData.Count(), 9);
}
public async Task AllAsync_ShouldBeEqualTitles_WhenTakeLastNewsFromLastPage()
{
// Arrange
var context = this.GetDbContext();
this.PopulateData(context);
var newsService = new NewsService(context, mapper);
// Act
var returnedData = await newsService.AllAsync(3);
// Assert
Assert.AreEqual("Title20", returnedData.ToList().Last().Title);
}
