public void CreateChildBindingContext_CopiesProperties()
{
// Arrange
var originalBindingContext = new ModelBindingContext
{
Model = new object(),
ModelMetadata = new TestModelMetadataProvider().GetMetadataForType(typeof(object)),
ModelName = "theName",
OperationBindingContext = new OperationBindingContext(),
ValueProvider = new SimpleValueProvider(),
ModelState = new ModelStateDictionary(),
};
var metadataProvider = new TestModelMetadataProvider();
metadataProvider.ForType <object>().BindingDetails(d =>
{
d.BindingSource = BindingSource.Custom;
d.BinderType = typeof(TestModelBinder);
d.BinderModelName = "custom";
});
var newModelMetadata = metadataProvider.GetMetadataForType(typeof(object));
// Act
var newBindingContext = ModelBindingContext.CreateChildBindingContext(
originalBindingContext,
newModelMetadata,
fieldName: "fieldName",
modelName: "modelprefix.fieldName",
model: null);
// Assert
Assert.Same(newModelMetadata.BinderModelName, newBindingContext.BinderModelName);
Assert.Same(newModelMetadata.BinderType, newBindingContext.BinderType);
Assert.Same(newModelMetadata.BindingSource, newBindingContext.BindingSource);
Assert.False(newBindingContext.FallbackToEmptyPrefix);
Assert.Equal("fieldName", newBindingContext.FieldName);
Assert.False(newBindingContext.IsTopLevelObject);
Assert.Null(newBindingContext.Model);
Assert.Same(newModelMetadata, newBindingContext.ModelMetadata);
Assert.Equal("modelprefix.fieldName", newBindingContext.ModelName);
Assert.Same(originalBindingContext.ModelState, newBindingContext.ModelState);
Assert.Same(originalBindingContext.OperationBindingContext, newBindingContext.OperationBindingContext);
Assert.Same(originalBindingContext.ValueProvider, newBindingContext.ValueProvider);
}
