public void BindModelCanHandleMultipleFilesWithSameKey()
{
// Arrange
HttpPostedFileBase foo_0 = GetFile("foo_0", 100);
HttpPostedFileBase foo_1 = GetFile("", 0); // this file shouldn't be part of the returned list since it was empty
HttpPostedFileBase foo_2 = GetFile("foo_2", 200);
Mock <HttpContextBase> mockHttpContext = new Mock <HttpContextBase>();
mockHttpContext.Expect(c => c.Request.Files.AllKeys).Returns(new string[] { "foo", "FOO", "foo[0]", "Foo" });
mockHttpContext.Expect(c => c.Request.Files[0]).Returns(foo_0);
mockHttpContext.Expect(c => c.Request.Files[1]).Returns(foo_1);
mockHttpContext.Expect(c => c.Request.Files[3]).Returns(foo_2);
ControllerContext controllerContext = GetControllerContext(mockHttpContext.Object);
FileCollectionModelBinder binder = new FileCollectionModelBinder();
ModelBindingContext bindingContext = new ModelBindingContext()
{
ModelName = "foo", ModelType = typeof(IList <HttpPostedFileBase>)
};
// Act
object result = binder.BindModel(controllerContext, bindingContext);
// Assert
Assert.IsInstanceOfType(result, typeof(IList <HttpPostedFileBase>));
IList <HttpPostedFileBase> castResult = (IList <HttpPostedFileBase>)result;
Assert.IsTrue(castResult.SequenceEqual(new HttpPostedFileBase[] { foo_0, null, foo_2 }));
}
private static void TestBindModelSupportForCollectionType <T>() where T : IEnumerable <HttpPostedFileBase>
{
// Arrange
HttpPostedFileBase foo_0 = GetFile("foo_0", 100);
HttpPostedFileBase foo_1 = GetFile("", 0); // this file shouldn't be part of the returned collection since it was empty
HttpPostedFileBase foo_2 = GetFile("foo_2", 200);
Mock <HttpContextBase> mockHttpContext = new Mock <HttpContextBase>();
mockHttpContext.Expect(c => c.Request.Files["foo[0]"]).Returns(foo_0);
mockHttpContext.Expect(c => c.Request.Files["foo[1]"]).Returns(foo_1);
mockHttpContext.Expect(c => c.Request.Files["foo[2]"]).Returns(foo_2);
ControllerContext controllerContext = GetControllerContext(mockHttpContext.Object);
FileCollectionModelBinder binder = new FileCollectionModelBinder();
ModelBindingContext bindingContext = new ModelBindingContext()
{
ModelName = "foo", ModelType = typeof(T)
};
// Act
object result = binder.BindModel(controllerContext, bindingContext);
// Assert
Assert.IsInstanceOfType(result, typeof(T));
T castResult = (T)result;
Assert.IsTrue(castResult.SequenceEqual(new HttpPostedFileBase[] { foo_0, null, foo_2 }));
}
public void BindModelThrowsIfModelTypeIsNotSupportedCollectionType()
{
// Arrange
HttpPostedFileBase foo_0 = GetFile("foo_0", 100);
HttpPostedFileBase foo_1 = GetFile("", 0); // this file shouldn't be part of the returned collection since it was empty
HttpPostedFileBase foo_2 = GetFile("foo_2", 200);
Mock <HttpContextBase> mockHttpContext = new Mock <HttpContextBase>();
mockHttpContext.Expect(c => c.Request.Files["foo[0]"]).Returns(foo_0);
mockHttpContext.Expect(c => c.Request.Files["foo[1]"]).Returns(foo_1);
mockHttpContext.Expect(c => c.Request.Files["foo[2]"]).Returns(foo_2);
ControllerContext controllerContext = GetControllerContext(mockHttpContext.Object);
FileCollectionModelBinder binder = new FileCollectionModelBinder();
ModelBindingContext bindingContext = new ModelBindingContext()
{
ModelName = "foo", ModelType = typeof(string)
};
// Act & assert
ExceptionHelper.ExpectInvalidOperationException(
delegate {
binder.BindModel(controllerContext, bindingContext);
},
"This model binder does not support the model type 'System.String'.");
}
public void BindModelThrowsIfControllerContextIsNull()
{
// Arrange
FileCollectionModelBinder binder = new FileCollectionModelBinder();
// Act & assert
ExceptionHelper.ExpectArgumentNullException(
delegate {
binder.BindModel(null, null);
}, "controllerContext");
}
public void BindModelThrowsIfBindingContextIsNull()
{
// Arrange
FileCollectionModelBinder binder = new FileCollectionModelBinder();
ControllerContext controllerContext = GetControllerContext(new Mock <HttpContextBase>().Object);
// Act & assert
ExceptionHelper.ExpectArgumentNullException(
delegate {
binder.BindModel(controllerContext, null);
}, "bindingContext");
}
public void BindModelReturnsNullIfNoFileInputElementsMatchingKeyInRequest()
{
// Arrange
Mock <HttpContextBase> mockHttpContext = new Mock <HttpContextBase>();
mockHttpContext.Expect(c => c.Request.Files.AllKeys).Returns(new string[] { "bar", "baz", "quux" });
ControllerContext controllerContext = GetControllerContext(mockHttpContext.Object);
FileCollectionModelBinder binder = new FileCollectionModelBinder();
ModelBindingContext bindingContext = new ModelBindingContext()
{
ModelName = "foo"
};
// Act
object result = binder.BindModel(controllerContext, bindingContext);
// Assert
Assert.IsNull(result);
}