public void CreateViewDataDictionary_UsesDeclaredTypeOverModelType_WhenCreatingTheViewDataDictionary()
{
// Arrange
var modelMetadataProvider = new EmptyModelMetadataProvider();
var activator = new RazorPagePropertyActivator(
typeof(TestPage),
declaredModelType: typeof(TestModel),
metadataProvider: modelMetadataProvider,
propertyValueAccessors: null);
var original = new ViewDataDictionary(modelMetadataProvider, new ModelStateDictionary())
{
{ "test-key", "test-value" },
};
var viewContext = new ViewContext
{
ViewData = original,
};
// Act
var viewDataDictionary = activator.CreateViewDataDictionary(viewContext);
// Assert
Assert.NotNull(viewDataDictionary);
Assert.NotSame(original, viewDataDictionary);
Assert.IsType <ViewDataDictionary <TestModel> >(viewDataDictionary);
Assert.Equal("test-value", viewDataDictionary["test-key"]);
}
public void CreateViewDataDictionary_ReturnsInstanceOnContext_IfModelTypeMatches()
{
// Arrange
var modelMetadataProvider = new EmptyModelMetadataProvider();
var activator = new RazorPagePropertyActivator(
typeof(TestPage),
declaredModelType: typeof(TestModel),
metadataProvider: modelMetadataProvider,
propertyValueAccessors: null);
var original = new ViewDataDictionary <TestModel>(modelMetadataProvider, new ModelStateDictionary())
{
{ "test-key", "test-value" },
};
var viewContext = new ViewContext
{
ViewData = original,
};
// Act
var viewDataDictionary = activator.CreateViewDataDictionary(viewContext);
// Assert
Assert.NotNull(viewDataDictionary);
Assert.Same(original, viewDataDictionary);
}
/// <inheritdoc />
public void Activate(IRazorPage page, ViewContext context)
{
if (page == null)
{
throw new ArgumentNullException(nameof(page));
}
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
var pageType = page.GetType();
RazorPagePropertyActivator propertyActivator;
if (!_activationInfo.TryGetValue(pageType, out propertyActivator))
{
// Look for a property named "Model". If it is non-null, we'll assume this is
// the equivalent of TModel Model property on RazorPage<TModel>.
//
// Otherwise if we don't have a model property the activator will just skip setting
// the view data.
var modelType = pageType.GetRuntimeProperty(ModelPropertyName)?.PropertyType;
propertyActivator = new RazorPagePropertyActivator(
pageType,
modelType,
_metadataProvider,
_propertyAccessors);
propertyActivator = _activationInfo.GetOrAdd(pageType, propertyActivator);
}
propertyActivator.Activate(page, context);
}
public void CreateViewDataDictionary_MakesNewInstanceWithObjectModelType_WhenValueOnContextAndModelTypeAreNull()
{
// Arrange
var activator = new RazorPagePropertyActivator(
typeof(TestPage),
declaredModelType: null,
metadataProvider: new EmptyModelMetadataProvider(),
propertyValueAccessors: null);
var viewContext = new ViewContext();
// Act
var viewDataDictionary = activator.CreateViewDataDictionary(viewContext);
// Assert
Assert.NotNull(viewDataDictionary);
Assert.IsType <ViewDataDictionary <object> >(viewDataDictionary);
}
public void CreateViewDataDictionary_MakesNewInstance_WhenValueOnContextIsNull()
{
// Arrange
var activator = new RazorPagePropertyActivator(
typeof(TestPage),
typeof(TestModel),
new EmptyModelMetadataProvider(),
propertyValueAccessors: null);
var viewContext = new ViewContext();
// Act
var viewDataDictionary = activator.CreateViewDataDictionary(viewContext);
// Assert
Assert.NotNull(viewDataDictionary);
Assert.IsType <ViewDataDictionary <TestModel> >(viewDataDictionary);
}
internal RazorPagePropertyActivator GetOrAddCacheEntry(IRazorPage page)
{
var pageType = page.GetType();
Type?providedModelType = null;
if (page is IModelTypeProvider modelTypeProvider)
{
providedModelType = modelTypeProvider.GetModelType();
}
// We only need to vary by providedModelType since it varies at runtime. Defined model type
// is synonymous with the pageType and consequently does not need to be accounted for in the cache key.
var cacheKey = new CacheKey(pageType, providedModelType);
if (!_activationInfo.TryGetValue(cacheKey, out var propertyActivator))
{
// Look for a property named "Model". If it is non-null, we'll assume this is
// the equivalent of TModel Model property on RazorPage<TModel>.
//
// Otherwise if we don't have a model property the activator will just skip setting
// the view data.
var modelType = providedModelType;
if (modelType == null)
{
modelType = pageType.GetRuntimeProperty(ModelPropertyName)?.PropertyType;
}
propertyActivator = new RazorPagePropertyActivator(
pageType,
modelType,
_metadataProvider,
_propertyAccessors);
propertyActivator = _activationInfo.GetOrAdd(cacheKey, propertyActivator);
}
return(propertyActivator);
}
