public async Task FilterRecipes_Returns_BadRequest_When_Arguments_Are_Invalid()
{
// Arrange
var recipesService = Substitute.For <IRecipesService>();
var controller = new RecipesController(recipesService, AutoMapper.Mapper.Instance);
var filter = new FilterRecipeDTO {
Text = null, Tags = null
};
// Act
var result = await controller.FilterRecipes(filter);
// Assert
Assert.True(result.GetType().IsAssignableFrom(typeof(BadRequestResult)));
}