public async void Tags_AddTagDBAsync_Positive_Test() { var options = new DbContextOptionsBuilder <DreamFoodDeliveryContext>() .UseInMemoryDatabase(databaseName: "Tags_AddTagDBAsync_Positive_Test") .Options; using (var context = new DreamFoodDeliveryContext(options)) { var service = new TagService(_mapper, context); string newTag = "NewTag"; TagToAdd tag = new TagToAdd() { TagName = newTag, }; var resultPositive = await service.AddTagDBAsync(tag); resultPositive.IsSuccess.Should().BeTrue(); resultPositive.Data.TagName.Should().BeEquivalentTo(tag.TagName); } }