public void PageChangeTest()
{
_presentationModel.ResetPage();
Assert.AreEqual("Total：0元", _presentationModel.GetTotalPriceLabelText());
Assert.IsTrue(_presentationModel.IsNextPageButtonEnabled());
Assert.IsFalse(_presentationModel.IsPreviousPageButtonEnabled());
Assert.AreEqual("Page：1 / 2", _presentationModel.GetPageLabelText());
Assert.AreEqual("麥香魚\n$49元", _presentationModel.GetOrderButtonText(8));
Assert.AreEqual("安格斯黑牛堡，大家都愛吃。", _presentationModel.GetMealIntroductionText(0));
Assert.IsTrue(_presentationModel.IsOrderButtonVisible(8));
_presentationModel.ChangePage(1);
Assert.IsFalse(_presentationModel.IsNextPageButtonEnabled());
Assert.IsTrue(_presentationModel.IsPreviousPageButtonEnabled());
Assert.AreEqual("Page：2 / 2", _presentationModel.GetPageLabelText());
Assert.AreEqual(null, _presentationModel.GetOrderButtonText(8));
Assert.IsFalse(_presentationModel.IsOrderButtonVisible(8));
_presentationModel.GetMealButtonImagePath(0);
_presentationModel.GetMealButtonImagePath(8);
_presentationModel.ChangePage(2);
Assert.AreEqual("Page：1 / 2", _presentationModel.GetPageLabelText());
}