public async Task MergeTags()
{
var tag = _fixture.Create <TagStat>();
var newName = tag.TagName;
var mergeInfo = new TagMergeInfo {
NewTagName = newName, SourceTagIds = new int[] { 1, 2, 3 }
};
_photosService.Setup(m => m.MergeTags(mergeInfo.NewTagName, mergeInfo.SourceTagIds))
.ReturnsAsync(tag);
var response = await _tagsController.MergeTags(mergeInfo);
_photosService.Verify(m => m.MergeTags(mergeInfo.NewTagName, mergeInfo.SourceTagIds),
Times.Once);
Assert.IsType <OkObjectResult>(response);
var value = ((OkObjectResult)response).Value;
Assert.IsType <Dto.Tag>(value);
var dto = value as Dto.Tag;
Assert.Equal(tag.TagName, dto.TagName);
Assert.Equal(tag.TagId, dto.TagId);
}