public async Task PersistsTagsThatDoNotAlreadyExistOnArticle()
{
var tagThatExists = new MetaTagRequest
{
Name = "tag1"
};
var tagThatDoesNotExist = new MetaTagRequest
{
Name = "tag2"
};
var existingArticleWithTags = new ArticleFixture().WithTags(tagThatExists).Build();
var mockContext = new MockBlogApiDbContextFixture();
mockContext.Mock.Setup(ctx => ctx.Query <Article>(It.IsAny <string>()))
.Returns(new [] { existingArticleWithTags }.AsQueryable());
var coordinator = new AddMetaTagForArticleCoordinatorFixture
{
Context = mockContext.Build()
}.Build();
var result = await coordinator.AddArticleMetaTags(existingArticleWithTags.Id, tagThatExists, tagThatDoesNotExist);
Assert.True(result.Any(mt => mt.Name == tagThatDoesNotExist.Name));
Assert.True(result.All(mt => mt.Name != tagThatExists.Name));
mockContext.Mock.Verify(ctx => ctx.Add(result), Times.Once);
mockContext.Mock.Verify(ctx => ctx.SaveChanges(), Times.Once);
}
public async Task DoesNotAddNewTagsIfTheyAlreadyExistOnArticle()
{
var newTagToAdd = new MetaTagRequest
{
Name = "SomeTag"
};
var existingArticleWithTags = new ArticleFixture().WithTags(newTagToAdd).Build();
var mockContext = new MockBlogApiDbContextFixture();
mockContext.Mock.Setup(ctx => ctx.Query <Article>(It.IsAny <string>()))
.Returns(new[] { existingArticleWithTags }.AsQueryable());
var coordinator = new AddMetaTagForArticleCoordinatorFixture
{
Context = mockContext.Build()
}.Build();
var result = await coordinator.AddArticleMetaTags(existingArticleWithTags.Id, newTagToAdd);
Assert.Null(result);
mockContext.Mock.Verify(ctx => ctx.Add(It.IsAny <MetaTag[]>()), Times.Never);
mockContext.Mock.Verify(ctx => ctx.SaveChanges(), Times.Never);
}
public async Task DoesNotDeleteTagsIfArticleDoesNotExist()
{
var metaTag = new MetaTagRequest
{
Name = "SomeTag"
};
var mockContext = new MockBlogApiDbContextFixture();
mockContext.Mock.Setup(ctx => ctx.Query <Article>(It.IsAny <string>()))
.Returns(Enumerable.Empty <Article>().AsQueryable());
var coordinator = new RemoveMetaTagForArticleCoordinatorFixture()
{
Context = mockContext.Build()
}.Build();
await coordinator.RemoveArticleMetaTags(Guid.NewGuid(), metaTag);
mockContext.Mock.Verify(ctx => ctx.Delete(It.IsAny <MetaTag>()), Times.Never);
mockContext.Mock.Verify(ctx => ctx.SaveChanges(), Times.Never);
}
public async Task DoesNotAddMetaTagIfArticleDoesNotExist()
{
var newTagToAdd = new MetaTagRequest
{
Name = "SomeTag"
};
var mockContext = new MockBlogApiDbContextFixture();
mockContext.Mock.Setup(ctx => ctx.Query <Article>(It.IsAny <string>()))
.Returns(Enumerable.Empty <Article>().AsQueryable());
var coordinator = new AddMetaTagForArticleCoordinatorFixture
{
Context = mockContext.Build()
}.Build();
var result = await coordinator.AddArticleMetaTags(Guid.NewGuid(), newTagToAdd);
Assert.Null(result);
mockContext.Mock.Verify(ctx => ctx.Add(It.IsAny <MetaTag[]>()), Times.Never);
mockContext.Mock.Verify(ctx => ctx.SaveChanges(), Times.Never);
}