public void GivenContextWithoutTags_NoTagsAreReturned()
{
var givenTags = new List <Tag>();
var expectedResult = new List <TagInstanceDto>();
var mockGraph = CreateMockTagGraph(givenTags);
var query = GetTagsQuery.Create();
IRequestHandler <GetTagsQuery, IEnumerable <TagInstanceDto> > sut = new GetTagsQueryHandler(mockGraph.Object);
var actualResult = sut.Handle(query, CancellationToken.None).Result;
actualResult.Should().BeEquivalentTo(expectedResult);
}
public async Task GivenValidRequest_WhenMultipleTagsExist_ReturnsPopulatedTagViewModel()
{
// Arrange
var getQueryTags = new GetTagsQuery();
// Act
var handler = new GetTagsQueryHandler(Context, Mapper);
var response = await handler.Handle(getQueryTags, CancellationToken.None);
// Assert
response.ShouldNotBeNull();
response.ShouldBeOfType <TagViewModelList>();
response.Tags.ShouldNotBeNull();
response.Tags.ShouldBeOfType <List <string> >();
response.Tags.ShouldNotBeEmpty();
}
public async Task GivenValidRequest_WhenNoTagsExist_ReturnsEmptyTagList()
{
// Arrange
var getQueryTags = new GetTagsQuery();
var tagsToRemove = Context.Tags.ToList();
Context.Tags.RemoveRange(tagsToRemove);
Context.SaveChanges();
// Act
var handler = new GetTagsQueryHandler(Context, Mapper);
var response = await handler.Handle(getQueryTags, CancellationToken.None);
// Assert
response.ShouldNotBeNull();
response.ShouldBeOfType <TagViewModelList>();
response.Tags.ShouldNotBeNull();
response.Tags.ShouldBeOfType <List <string> >();
response.Tags.ShouldBeEmpty();
}
public void GivenContextWithSampleTags_ThenAllTagsAreReturned()
{
var givenTags = new[] { new Tag {
Id = 52, Name = "random", Description = "It is so random"
}, new Tag {
Id = 62, Name = "expected", Description = "Spanish Inquisition"
} };
var expectedResult = new[]
{
new TagInstanceDto("random", "It is so random", Array.Empty <string>(), Array.Empty <string>()),
new TagInstanceDto("expected", "Spanish Inquisition", Array.Empty <string>(), Array.Empty <string>())
};
var mockGraph = CreateMockTagGraph(givenTags);
var query = GetTagsQuery.Create();
IRequestHandler <GetTagsQuery, IEnumerable <TagInstanceDto> > sut = new GetTagsQueryHandler(mockGraph.Object);
var actualResult = sut.Handle(query, CancellationToken.None).Result;
actualResult.Should().BeEquivalentTo(expectedResult);
}
