[英]How to test custom Model Binders in ASP.NET MVC?
我在ASP.NET MVC應用程序中編寫了一些自定義模型綁定器(實現IModelBinder)。 我想知道對它們進行單元測試的好方法(粘合劑)?
我是這樣做的:
var formElements = new NameValueCollection() { {"FirstName","Bubba"}, {"MiddleName", ""}, {"LastName", "Gump"} };
var fakeController = GetControllerContext(formElements);
var valueProvider = new Mock<IValueProvider>();
var bindingContext = new ModelBindingContext(fakeController, valueProvider.Object, typeof(Guid), null, null, null, null);
private static ControllerContext GetControllerContext(NameValueCollection form) {
Mock<HttpRequestBase> mockRequest = new Mock<HttpRequestBase>();
mockRequest.Expect(r => r.Form).Returns(form);
Mock<HttpContextBase> mockHttpContext = new Mock<HttpContextBase>();
mockHttpContext.Expect(c => c.Request).Returns(mockRequest.Object);
return new ControllerContext(mockHttpContext.Object, new RouteData(), new Mock<ControllerBase>().Object);
}
然后我將bindingContext變量傳遞給實現IModelBinder接口的對象的BindModel方法。
這是我在博客上為您編寫的一種簡單的無模式方法,假設您使用的是ValueProvider而不是HttpContext: http : //www.hanselman.com/blog/SplittingDateTimeUnitTestingASPNETMVCCustomModelBinders.aspx
[TestMethod]
public void DateTime_Can_Be_Pulled_Via_Provided_Month_Day_Year_Hour_Minute_Second_Alternate_Names()
{
var dict = new ValueProviderDictionary(null) {
{ "foo.month1", new ValueProviderResult("2","2",null) },
{ "foo.day1", new ValueProviderResult("12", "12", null) },
{ "foo.year1", new ValueProviderResult("1964", "1964", null) },
{ "foo.hour1", new ValueProviderResult("13","13",null) },
{ "foo.minute1", new ValueProviderResult("44", "44", null) },
{ "foo.second1", new ValueProviderResult("01", "01", null) }
};
var bindingContext = new ModelBindingContext() { ModelName = "foo", ValueProvider = dict };
DateAndTimeModelBinder b = new DateAndTimeModelBinder() { Month = "month1", Day = "day1", Year = "year1", Hour = "hour1", Minute = "minute1", Second = "second1" };
DateTime result = (DateTime)b.BindModel(null, bindingContext);
Assert.AreEqual(DateTime.Parse("1964-02-12 13:44:01"), result);
}
dict可以像這樣重構
FormCollection form = new FormCollection
{
{ "month1", "2" },
{ "day1", "12" },
{ "year1", "1964" },
{ "hour1", "13" },
{ "minute1", "44" },
{ "second1", "01" }
};
var bindingContext = new ModelBindingContext() { ModelName = "foo", ValueProvider = form.ToValueProvider() };
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