public void BuildSearchRequestQuery() { //Arrange IApiRequestBuilder builder = new ApiRequestBuilder(); SearchRequestInput request = new SearchRequestInput { query = "Ben & Jerry's ice cream", sort = SearchRequestSortType.bestseller }; //Act var result = builder.GetSearchApiQueryString(request, "test"); //Assert var expectedValue = @"apiKey=test&query=Ben+%26+Jerry%27s+ice+cream&numItems=10&sort=bestseller&categoryId=0&responseGroup=base"; Assert.Equal(expectedValue, result); }