public async Task CallsDownToQueryIfArticleDoesExist()
{
var articleIdToLookup = Guid.NewGuid();
var articleToBuildFor = new ArticleFixture
{
Id = articleIdToLookup
}.Build();
var mockMapping = new Dictionary <string, string>();
var mockContextWithNoArticles = new MockBlogApiDbContextFixture();
mockContextWithNoArticles.Mock.Setup(m => m.Find <Article>(articleIdToLookup)).ReturnsAsync(articleToBuildFor);
var mockQuery = new Mock <IGetMediaLookupQuery>();
mockQuery.Setup(m => m.CreateMediaLookup(articleIdToLookup)).Returns(mockMapping);
var blogArticleCoordinatorFixture = new FindBlogArticleCoordinatorFixture
{
Context = mockContextWithNoArticles.Build(),
};
var lookupStrategy = new GetArticleMediaLookupStrategyFixture
{
FindBlogArticleCoordinator = blogArticleCoordinatorFixture.Build(),
MediaLookupQuery = mockQuery.Object
}.Build();
var result = await lookupStrategy.GetMediaLookup(articleIdToLookup);
Assert.Equal(mockMapping, result.MediaLookup);
mockQuery.Verify(m => m.CreateMediaLookup(articleIdToLookup), Times.Once);
}
public async Task DoesNotCallDownToQueryIfArticleDoesNotExist()
{
var articleIdToLookup = Guid.NewGuid();
var mockContextWithNoArticles = new MockBlogApiDbContextFixture();
mockContextWithNoArticles.Mock.Setup(m => m.Find <Article>(articleIdToLookup)).ReturnsAsync(null as Article);
var mockQuery = new Mock <IGetMediaLookupQuery>();
mockQuery.Setup(m => m.CreateMediaLookup(articleIdToLookup));
var blogArticleCoordinatorFixture = new FindBlogArticleCoordinatorFixture
{
Context = mockContextWithNoArticles.Build(),
};
var lookupStrategy = new GetArticleMediaLookupStrategyFixture
{
FindBlogArticleCoordinator = blogArticleCoordinatorFixture.Build(),
MediaLookupQuery = mockQuery.Object
}.Build();
var result = await lookupStrategy.GetMediaLookup(articleIdToLookup);
Assert.Null(result);
mockQuery.Verify(m => m.CreateMediaLookup(articleIdToLookup), Times.Never);
}
public async Task ReturnsNullWhenNoArticleFound(Guid articleId, Article expectedArticle = null)
{
var contextFixture = new MockBlogApiDbContextFixture();
contextFixture.Mock.Setup(m => m.Find <Article>(articleId)).Returns(Task.FromResult(expectedArticle));
var coordinator = new FindBlogArticleCoordinatorFixture
{
Context = contextFixture.Build()
}.Build();
var result = await coordinator.Find(articleId);
contextFixture.Mock.Verify(m => m.Find <Article>(articleId));
if (expectedArticle == null)
{
Assert.Null(result);
return;
}
Assert.Equal(expectedArticle, result);
}
public GetArticleMediaLookupStrategyFixture()
{
FindBlogArticleCoordinator = new FindBlogArticleCoordinatorFixture().Build();
MediaLookupQuery = new GetMediaLookupQueryFixture().Build();
}