public void CategoryContent_Should_CallGetProductsForGivenCategoryWithFilterOnlyOnce(int id, string searchTerm) { //Arrange //SetUp //Act var result = controller.CategoryContent(id, searchTerm); //Assert contextService.Verify(v => v.GetProductsForGivenCategoryWithFilter(It.IsAny <int>(), It.IsAny <string>()), Times.Once); }