public void GetBinderReturnsFirstBinderFromProviders()
{
// Arrange
ControllerContext controllerContext = new ControllerContext();
ExtensibleModelBindingContext bindingContext = new ExtensibleModelBindingContext()
{
ModelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(null, typeof(object))
};
IExtensibleModelBinder expectedBinder = new Mock <IExtensibleModelBinder>().Object;
Mock <ModelBinderProvider> mockProvider = new Mock <ModelBinderProvider>();
mockProvider.Setup(p => p.GetBinder(controllerContext, bindingContext)).Returns(expectedBinder);
ModelBinderProviderCollection collection = new ModelBinderProviderCollection(new ModelBinderProvider[] {
new Mock <ModelBinderProvider>().Object,
mockProvider.Object,
new Mock <ModelBinderProvider>().Object
});
// Act
IExtensibleModelBinder returned = collection.GetBinder(controllerContext, bindingContext);
// Assert
Assert.AreEqual(expectedBinder, returned);
}
public void GetBinderThrowsIfControllerContextIsNull()
{
// Arrange
ModelBinderProviderCollection collection = new ModelBinderProviderCollection();
// Act & assert
ExceptionHelper.ExpectArgumentNullException(
delegate {
collection.GetBinder(null, new ExtensibleModelBindingContext());
}, "controllerContext");
}
public void GetBinderThrowsIfModelTypeHasBindAttribute()
{
// Arrange
ControllerContext controllerContext = new ControllerContext();
ExtensibleModelBindingContext bindingContext = new ExtensibleModelBindingContext()
{
ModelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(null, typeof(ModelWithBindAttribute))
};
ModelBinderProviderCollection collection = new ModelBinderProviderCollection();
// Act & assert
ExceptionHelper.ExpectInvalidOperationException(
delegate {
collection.GetBinder(controllerContext, bindingContext);
},
@"The model of type 'Microsoft.Web.Mvc.ModelBinding.Test.ModelBinderProviderCollectionTest+ModelWithBindAttribute' has a [Bind] attribute. The new model binding system cannot be used with models that have type-level [Bind] attributes. Use the [BindRequired] and [BindNever] attributes on the model type or its properties instead.");
}
public void GetBinder_FromAttribute_BadAttribute_Throws()
{
// Arrange
ControllerContext controllerContext = new ControllerContext();
ExtensibleModelBindingContext bindingContext = new ExtensibleModelBindingContext()
{
ModelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(null, typeof(ModelWithProviderAttribute_BadAttribute))
};
ModelBinderProviderCollection providers = new ModelBinderProviderCollection();
// Act & assert
ExceptionHelper.ExpectInvalidOperationException(
delegate {
providers.GetBinder(controllerContext, bindingContext);
},
@"The type 'System.Object' does not subclass Microsoft.Web.Mvc.ModelBinding.ModelBinderProvider or implement the interface Microsoft.Web.Mvc.ModelBinding.IExtensibleModelBinder.");
}
public void GetBinderReturnsNullIfNoProviderMatches()
{
// Arrange
ControllerContext controllerContext = new ControllerContext();
ExtensibleModelBindingContext bindingContext = new ExtensibleModelBindingContext()
{
ModelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(null, typeof(object))
};
ModelBinderProviderCollection collection = new ModelBinderProviderCollection(new ModelBinderProvider[] {
new Mock <ModelBinderProvider>().Object,
});
// Act
IExtensibleModelBinder returned = collection.GetBinder(controllerContext, bindingContext);
// Assert
Assert.IsNull(returned);
}
public void GetBinder_FromAttribute_Provider_ReturnsBinder()
{
// Arrange
ControllerContext controllerContext = new ControllerContext();
ExtensibleModelBindingContext bindingContext = new ExtensibleModelBindingContext()
{
ModelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(null, typeof(ModelWithProviderAttribute_Provider))
};
ModelBinderProviderCollection providers = new ModelBinderProviderCollection();
providers.RegisterBinderForType(typeof(ModelWithProviderAttribute_Provider), new Mock <IExtensibleModelBinder>().Object, true /* suppressPrefix */);
// Act
IExtensibleModelBinder binder = providers.GetBinder(controllerContext, bindingContext);
// Assert
Assert.AreEqual(typeof(CustomBinder), binder.GetType(), "Binder should've come from attribute rather than collection.");
}
public void GetBinder_FromAttribute_Binder_ValueNotPresent_ReturnsNull()
{
// Arrange
ControllerContext controllerContext = new ControllerContext();
ExtensibleModelBindingContext bindingContext = new ExtensibleModelBindingContext()
{
ModelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(null, typeof(ModelWithProviderAttribute_Binder)),
ModelName = "foo",
ValueProvider = new SimpleValueProvider()
{
{ "bar", "barValue" }
}
};
ModelBinderProviderCollection providers = new ModelBinderProviderCollection();
providers.RegisterBinderForType(typeof(ModelWithProviderAttribute_Binder), new Mock <IExtensibleModelBinder>().Object, true /* suppressPrefix */);
// Act
IExtensibleModelBinder binder = providers.GetBinder(controllerContext, bindingContext);
// Assert
Assert.IsNull(binder, "Binder should've come from attribute rather than collection, even if the attribute's provider returns null.");
}