public void SetProperty_PropertyIsPreinitialized_DefaultValueAttributeDoesNothing()
{
// Arrange
var model = new Person();
var bindingContext = CreateContext(GetMetadataForType(model.GetType()), model);
var metadataProvider = bindingContext.OperationBindingContext.MetadataProvider;
var modelExplorer = metadataProvider.GetModelExplorerForType(typeof(Person), model);
var propertyMetadata =
bindingContext.ModelMetadata.Properties[nameof(model.PropertyWithInitializedValueAndDefault)];
// This value won't be used because IsModelBound = false.
var result = new ModelBindingResult(model: "bad-value", isModelSet: false, key: "foo");
var testableBinder = new TestableMutableObjectModelBinder();
// Act
testableBinder.SetProperty(bindingContext, modelExplorer, propertyMetadata, result);
// Assert
var person = Assert.IsType<Person>(bindingContext.Model);
Assert.Equal("preinitialized", person.PropertyWithInitializedValueAndDefault);
Assert.True(bindingContext.ModelState.IsValid);
}
public void ProcessResults_ValueTypeProperty_TriesToSetNullModel_CapturesException()
{
// Arrange
var model = new Person();
var containerMetadata = GetMetadataForType(model.GetType());
var bindingContext = CreateContext(containerMetadata, model);
var modelStateDictionary = bindingContext.ModelState;
var results = containerMetadata.Properties.ToDictionary(
property => property,
property => new ModelBindingResult(model: null, key: property.PropertyName, isModelSet: false));
var testableBinder = new TestableMutableObjectModelBinder();
// The [DefaultValue] on ValueTypeRequiredWithDefaultValue is ignored by model binding.
var expectedValue = 0;
// Make ValueTypeRequired invalid.
var propertyMetadata = containerMetadata.Properties[nameof(Person.ValueTypeRequired)];
results[propertyMetadata] = new ModelBindingResult(
model: null,
isModelSet: true,
key: "theModel." + nameof(Person.ValueTypeRequired));
// Make ValueTypeRequiredWithDefaultValue invalid
propertyMetadata = containerMetadata.Properties[nameof(Person.ValueTypeRequiredWithDefaultValue)];
results[propertyMetadata] = new ModelBindingResult(
model: null,
isModelSet: true,
key: "theModel." + nameof(Person.ValueTypeRequiredWithDefaultValue));
var modelValidationNode = new ModelValidationNode(string.Empty, containerMetadata, model);
// Act
testableBinder.ProcessResults(bindingContext, results, modelValidationNode);
// Assert
Assert.False(modelStateDictionary.IsValid);
// Check ValueTypeRequired error.
var modelStateEntry = Assert.Single(
modelStateDictionary,
entry => entry.Key == "theModel." + nameof(Person.ValueTypeRequired));
Assert.Equal("theModel." + nameof(Person.ValueTypeRequired), modelStateEntry.Key);
var modelState = modelStateEntry.Value;
Assert.Equal(ModelValidationState.Invalid, modelState.ValidationState);
var error = Assert.Single(modelState.Errors);
Assert.Equal(string.Empty, error.ErrorMessage);
Assert.IsType<NullReferenceException>(error.Exception);
// Check ValueTypeRequiredWithDefaultValue error.
modelStateEntry = Assert.Single(
modelStateDictionary,
entry => entry.Key == "theModel." + nameof(Person.ValueTypeRequiredWithDefaultValue));
Assert.Equal("theModel." + nameof(Person.ValueTypeRequiredWithDefaultValue), modelStateEntry.Key);
modelState = modelStateEntry.Value;
Assert.Equal(ModelValidationState.Invalid, modelState.ValidationState);
error = Assert.Single(modelState.Errors);
Assert.Equal(string.Empty, error.ErrorMessage);
Assert.IsType<NullReferenceException>(error.Exception);
Assert.Equal(0, model.ValueTypeRequired);
Assert.Equal(expectedValue, model.ValueTypeRequiredWithDefaultValue);
}
public void SetProperty_PropertyIsSettable_CallsSetter()
{
// Arrange
var model = new Person();
var bindingContext = CreateContext(GetMetadataForType(model.GetType()), model);
var metadataProvider = bindingContext.OperationBindingContext.MetadataProvider;
var modelExplorer = metadataProvider.GetModelExplorerForType(typeof(Person), model);
var propertyMetadata = bindingContext.ModelMetadata.Properties["DateOfBirth"];
var dtoResult = new ModelBindingResult(
new DateTime(2001, 1, 1),
key: "foo",
isModelSet: true);
var validatorProvider = bindingContext.OperationBindingContext.ValidatorProvider;
var validatorProviderContext = new ModelValidatorProviderContext(propertyMetadata);
validatorProvider.GetValidators(validatorProviderContext);
var requiredValidator = validatorProviderContext.Validators.FirstOrDefault(v => v.IsRequired);
var testableBinder = new TestableMutableObjectModelBinder();
// Act
testableBinder.SetProperty(
bindingContext,
modelExplorer,
propertyMetadata,
dtoResult,
requiredValidator);
// Assert
Assert.True(bindingContext.ModelState.IsValid);
Assert.Equal(new DateTime(2001, 1, 1), model.DateOfBirth);
}
public void SetProperty_PropertySetterThrows_CapturesException()
{
// Arrange
var model = new ModelWhosePropertySetterThrows();
var bindingContext = CreateContext(GetMetadataForType(model.GetType()), model);
bindingContext.ModelName = "foo";
var metadataProvider = bindingContext.OperationBindingContext.MetadataProvider;
var modelExplorer = metadataProvider.GetModelExplorerForType(typeof(ModelWhosePropertySetterThrows), model);
var propertyMetadata = bindingContext.ModelMetadata.Properties[nameof(model.NameNoAttribute)];
var result = new ModelBindingResult(model: null, isModelSet: true, key: "foo.NameNoAttribute");
var testableBinder = new TestableMutableObjectModelBinder();
// Act
testableBinder.SetProperty(bindingContext, modelExplorer, propertyMetadata, result);
// Assert
Assert.False(bindingContext.ModelState.IsValid);
Assert.Equal(1, bindingContext.ModelState["foo.NameNoAttribute"].Errors.Count);
Assert.Equal("This is a different exception." + Environment.NewLine
+ "Parameter name: value",
bindingContext.ModelState["foo.NameNoAttribute"].Errors[0].Exception.Message);
}
public void ProcessResults_DataMemberIsRequiredFieldMissing_RaisesModelError()
{
// Arrange
var model = new ModelWithDataMemberIsRequired
{
Name = "original value",
Age = -20
};
var containerMetadata = GetMetadataForType(model.GetType());
var bindingContext = new ModelBindingContext
{
Model = model,
ModelMetadata = containerMetadata,
ModelName = "theModel",
OperationBindingContext = new OperationBindingContext
{
MetadataProvider = TestModelMetadataProvider.CreateDefaultProvider(),
ValidatorProvider = Mock.Of<IModelValidatorProvider>()
}
};
var results = containerMetadata.Properties.ToDictionary(
property => property,
property => new ModelBindingResult(model: null, key: property.PropertyName, isModelSet: false));
var nameProperty = containerMetadata.Properties[nameof(model.Name)];
results[nameProperty] = new ModelBindingResult("John Doe", isModelSet: true, key: string.Empty);
var modelValidationNode = new ModelValidationNode(string.Empty, containerMetadata, model);
var testableBinder = new TestableMutableObjectModelBinder();
// Act
testableBinder.ProcessResults(bindingContext, results, modelValidationNode);
// Assert
var modelStateDictionary = bindingContext.ModelState;
Assert.False(modelStateDictionary.IsValid);
Assert.Single(modelStateDictionary);
// Check Age error.
ModelState modelState;
Assert.True(modelStateDictionary.TryGetValue("theModel.Age", out modelState));
var modelError = Assert.Single(modelState.Errors);
Assert.Null(modelError.Exception);
Assert.NotNull(modelError.ErrorMessage);
Assert.Equal("A value for the 'Age' property was not provided.", modelError.ErrorMessage);
}
public void SetProperty_CollectionProperty_UpdatesModel(
string propertyName,
Func<object, object> propertyAccessor,
object collection)
{
// Arrange
var model = new CollectionContainer();
var type = model.GetType();
var bindingContext = CreateContext(GetMetadataForType(type), model);
var modelState = bindingContext.ModelState;
var metadataProvider = bindingContext.OperationBindingContext.MetadataProvider;
var modelExplorer = metadataProvider.GetModelExplorerForType(type, model);
var propertyMetadata = bindingContext.ModelMetadata.Properties[propertyName];
var result = new ModelBindingResult(model: collection, isModelSet: true, key: propertyName);
var testableBinder = new TestableMutableObjectModelBinder();
// Act
testableBinder.SetProperty(bindingContext, modelExplorer, propertyMetadata, result);
// Assert
Assert.Equal(collection, propertyAccessor(model));
Assert.True(modelState.IsValid);
Assert.Empty(modelState);
}
public void SetProperty_PropertyIsSettable_SetterThrows_RecordsError()
{
// Arrange
var model = new Person
{
DateOfBirth = new DateTime(1900, 1, 1)
};
var bindingContext = CreateContext(GetMetadataForType(model.GetType()), model);
var metadataProvider = bindingContext.OperationBindingContext.MetadataProvider;
var modelExplorer = metadataProvider.GetModelExplorerForType(typeof(Person), model);
var propertyMetadata = bindingContext.ModelMetadata.Properties[nameof(model.DateOfDeath)];
var result = new ModelBindingResult(new DateTime(1800, 1, 1), isModelSet: true, key: "foo");
var testableBinder = new TestableMutableObjectModelBinder();
// Act
testableBinder.SetProperty(bindingContext, modelExplorer, propertyMetadata, result);
// Assert
Assert.Equal("Date of death can't be before date of birth." + Environment.NewLine
+ "Parameter name: value",
bindingContext.ModelState["foo"].Errors[0].Exception.Message);
}
protected virtual void SetProperty(
ModelBindingContext bindingContext,
ModelExplorer modelExplorer,
ModelMetadata propertyMetadata,
ModelBindingResult dtoResult,
IModelValidator requiredValidator)
{
var bindingFlags = BindingFlags.Instance | BindingFlags.Public | BindingFlags.IgnoreCase;
var property = bindingContext.ModelType.GetProperty(
propertyMetadata.PropertyName,
bindingFlags);
if (property == null || !property.CanWrite)
{
// nothing to do
return;
}
object value;
var hasDefaultValue = false;
if (dtoResult.IsModelSet)
{
value = dtoResult.Model;
}
else
{
hasDefaultValue = TryGetPropertyDefaultValue(property, out value);
}
// 'Required' validators need to run first so that we can provide useful error messages if
// the property setters throw, e.g. if we're setting entity keys to null.
if (value == null)
{
var modelStateKey = dtoResult.Key;
var validationState = bindingContext.ModelState.GetFieldValidationState(modelStateKey);
if (validationState == ModelValidationState.Unvalidated)
{
if (requiredValidator != null)
{
var propertyExplorer = modelExplorer.GetExplorerForExpression(propertyMetadata, model: null);
var validationContext = new ModelValidationContext(bindingContext, propertyExplorer);
foreach (var validationResult in requiredValidator.Validate(validationContext))
{
bindingContext.ModelState.TryAddModelError(modelStateKey, validationResult.Message);
}
}
}
}
if (!dtoResult.IsModelSet && !hasDefaultValue)
{
// If we don't have a value, don't set it on the model and trounce a pre-initialized
// value.
return;
}
if (value != null || property.PropertyType.AllowsNullValue())
{
try
{
property.SetValue(bindingContext.Model, value);
}
catch (Exception ex)
{
// don't display a duplicate error message if a binding error has already occurred for this field
var targetInvocationException = ex as TargetInvocationException;
if (targetInvocationException != null &&
targetInvocationException.InnerException != null)
{
ex = targetInvocationException.InnerException;
}
var modelStateKey = dtoResult.Key;
var validationState = bindingContext.ModelState.GetFieldValidationState(modelStateKey);
if (validationState == ModelValidationState.Unvalidated)
{
bindingContext.ModelState.AddModelError(modelStateKey, ex);
}
}
}
else
{
// trying to set a non-nullable value type to null, need to make sure there's a message
var modelStateKey = dtoResult.Key;
var validationState = bindingContext.ModelState.GetFieldValidationState(modelStateKey);
if (validationState == ModelValidationState.Unvalidated)
{
var errorMessage = Resources.ModelBinderConfig_ValueRequired;
bindingContext.ModelState.TryAddModelError(modelStateKey, errorMessage);
}
}
}
/// <inheritdoc />
public virtual async Task <ModelBindingResult> BindModelAsync([NotNull] ModelBindingContext bindingContext)
{
ModelBindingHelper.ValidateBindingContext(bindingContext);
var model = bindingContext.Model;
if (!bindingContext.ValueProvider.ContainsPrefix(bindingContext.ModelName))
{
// If we failed to find data for a top-level model, then generate a
// default 'empty' model (or use existing Model) and return it.
if (bindingContext.IsTopLevelObject)
{
if (model == null)
{
model = CreateEmptyCollection(bindingContext.ModelType);
}
return(ModelBindingResult.Success(bindingContext.ModelName, model));
}
return(ModelBindingResult.NoResult);
}
var valueProviderResult = bindingContext.ValueProvider.GetValue(bindingContext.ModelName);
CollectionResult result;
if (valueProviderResult == ValueProviderResult.None)
{
result = await BindComplexCollection(bindingContext);
}
else
{
result = await BindSimpleCollection(bindingContext, valueProviderResult);
}
var boundCollection = result.Model;
if (model == null)
{
model = ConvertToCollectionType(bindingContext.ModelType, boundCollection);
}
else
{
// Special case for TryUpdateModelAsync(collection, ...) scenarios. Model is null in all other cases.
CopyToModel(model, boundCollection);
}
Debug.Assert(model != null);
if (result.ValidationStrategy != null)
{
bindingContext.ValidationState.Add(model, new ValidationStateEntry()
{
Strategy = result.ValidationStrategy,
});
}
if (valueProviderResult != ValueProviderResult.None)
{
// If we did simple binding, then modelstate should be updated to reflect what we bound for ModelName.
// If we did complex binding, there will already be an entry for each index.
bindingContext.ModelState.SetModelValue(
bindingContext.ModelName,
valueProviderResult);
}
return(ModelBindingResult.Success(bindingContext.ModelName, model));
}
public void SetProperty_SettingNullableTypeToNull_RequiredValidatorPresent_PropertySetterThrows_AddsRequiredMessageString()
{
// Arrange
var model = new ModelWhosePropertySetterThrows();
var bindingContext = CreateContext(GetMetadataForType(model.GetType()), model);
bindingContext.ModelName = "foo";
var metadataProvider = bindingContext.OperationBindingContext.MetadataProvider;
var modelExplorer = metadataProvider.GetModelExplorerForType(typeof(Person), model);
var propertyMetadata = bindingContext.ModelMetadata.Properties["Name"];
var dtoResult = new ModelBindingResult(
model: null,
isModelSet: true,
key: "foo.Name");
var requiredValidator = GetRequiredValidator(bindingContext, propertyMetadata);
var testableBinder = new TestableMutableObjectModelBinder();
// Act
testableBinder.SetProperty(
bindingContext,
modelExplorer,
propertyMetadata,
dtoResult,
requiredValidator);
// Assert
Assert.False(bindingContext.ModelState.IsValid);
var error = Assert.Single(bindingContext.ModelState["foo.Name"].Errors);
Assert.Equal("This message comes from the [Required] attribute.", error.ErrorMessage);
}
public new void SetProperty(
ModelBindingContext bindingContext,
ModelExplorer modelExplorer,
ModelMetadata propertyMetadata,
ModelBindingResult dtoResult,
IModelValidator requiredValidator)
{
base.SetProperty(
bindingContext,
modelExplorer,
propertyMetadata,
dtoResult,
requiredValidator);
}
public void SetProperty_SettingNullableTypeToNull_RequiredValidatorNotPresent_PropertySetterThrows_AddsRequiredMessageString()
{
// Arrange
var model = new ModelWhosePropertySetterThrows();
var bindingContext = CreateContext(GetMetadataForType(model.GetType()), model);
bindingContext.ModelName = "foo";
var metadataProvider = bindingContext.OperationBindingContext.MetadataProvider;
var modelExplorer = metadataProvider.GetModelExplorerForType(typeof(Person), model);
var propertyMetadata = bindingContext.ModelMetadata.Properties["NameNoAttribute"];
var dtoResult = new ModelBindingResult(
model: null,
isModelSet: true,
key: "foo.NameNoAttribute");
var requiredValidator = GetRequiredValidator(bindingContext, propertyMetadata);
var testableBinder = new TestableMutableObjectModelBinder();
// Act
testableBinder.SetProperty(
bindingContext,
modelExplorer,
propertyMetadata,
dtoResult,
requiredValidator);
// Assert
Assert.False(bindingContext.ModelState.IsValid);
Assert.Equal(1, bindingContext.ModelState["foo.NameNoAttribute"].Errors.Count);
Assert.Equal("This is a different exception." + Environment.NewLine
+ "Parameter name: value",
bindingContext.ModelState["foo.NameNoAttribute"].Errors[0].Exception.Message);
}
public void SetProperty_SettingNonNullableValueTypeToNull_RequiredValidatorPresent_AddsModelError()
{
// Arrange
var model = new Person();
var bindingContext = CreateContext(GetMetadataForType(model.GetType()), model);
bindingContext.ModelName = " foo";
var metadataProvider = bindingContext.OperationBindingContext.MetadataProvider;
var modelExplorer = metadataProvider.GetModelExplorerForType(typeof(Person), model);
var propertyMetadata = bindingContext.ModelMetadata.Properties["ValueTypeRequired"];
var dtoResult = new ModelBindingResult(
model: null,
isModelSet: true,
key: "foo.ValueTypeRequired");
var requiredValidator = GetRequiredValidator(bindingContext, propertyMetadata);
var testableBinder = new TestableMutableObjectModelBinder();
// Act
testableBinder.SetProperty(
bindingContext,
modelExplorer,
propertyMetadata,
dtoResult,
requiredValidator);
// Assert
Assert.False(bindingContext.ModelState.IsValid);
Assert.Equal("Sample message", bindingContext.ModelState["foo.ValueTypeRequired"].Errors[0].ErrorMessage);
}
public void SetProperty_SettingNonNullableValueTypeToNull_RequiredValidatorNotPresent_RegistersValidationCallback()
{
// Arrange
var model = new Person();
var bindingContext = CreateContext(GetMetadataForType(model.GetType()), model);
var metadataProvider = bindingContext.OperationBindingContext.MetadataProvider;
var modelExplorer = metadataProvider.GetModelExplorerForType(typeof(Person), model);
var propertyMetadata = bindingContext.ModelMetadata.Properties["DateOfBirth"];
var dtoResult = new ModelBindingResult(
model: null,
isModelSet: true,
key: "foo");
var requiredValidator = GetRequiredValidator(bindingContext, propertyMetadata);
var testableBinder = new TestableMutableObjectModelBinder();
// Act
testableBinder.SetProperty(
bindingContext,
modelExplorer,
propertyMetadata,
dtoResult,
requiredValidator);
// Assert
Assert.False(bindingContext.ModelState.IsValid);
}
public void SetProperty_PropertyIsReadOnly_DoesNothing()
{
// Arrange
var model = new Person();
var bindingContext = CreateContext(GetMetadataForType(model.GetType()), model);
var metadataProvider = bindingContext.OperationBindingContext.MetadataProvider;
var modelExplorer = metadataProvider.GetModelExplorerForType(typeof(Person), model);
var propertyMetadata = bindingContext.ModelMetadata.Properties[nameof(model.NonUpdateableProperty)];
var result = new ModelBindingResult(model: null, isModelSet: false, key: "foo");
var testableBinder = new TestableMutableObjectModelBinder();
// Act
testableBinder.SetProperty(bindingContext, modelExplorer, propertyMetadata, result);
// Assert
// If didn't throw, success!
}
public Task <ModelBindingResult> BindModelAsync(ModelBindingContext bindingContext)
{
// This method is optimized to use cached tasks when possible and avoid allocating
// using Task.FromResult. If you need to make changes of this nature, profile
// allocations afterwards and look for Task<ModelBindingResult>.
if (bindingContext.ModelMetadata.IsComplexType)
{
// this type cannot be converted
return(ModelBindingResult.NoResultAsync);
}
var valueProviderResult = bindingContext.ValueProvider.GetValue(bindingContext.ModelName);
if (valueProviderResult == ValueProviderResult.None)
{
// no entry
return(ModelBindingResult.NoResultAsync);
}
bindingContext.ModelState.SetModelValue(bindingContext.ModelName, valueProviderResult);
try
{
var model = valueProviderResult.ConvertTo(bindingContext.ModelType);
if (bindingContext.ModelType == typeof(string))
{
var modelAsString = model as string;
if (bindingContext.ModelMetadata.ConvertEmptyStringToNull &&
string.IsNullOrWhiteSpace(modelAsString))
{
model = null;
}
}
// When converting newModel a null value may indicate a failed conversion for an otherwise required
// model (can't set a ValueType to null). This detects if a null model value is acceptable given the
// current bindingContext. If not, an error is logged.
if (model == null && !bindingContext.ModelMetadata.IsReferenceOrNullableType)
{
bindingContext.ModelState.TryAddModelError(
bindingContext.ModelName,
bindingContext.ModelMetadata.ModelBindingMessageProvider.ValueMustNotBeNullAccessor(
valueProviderResult.ToString()));
return(ModelBindingResult.FailedAsync(bindingContext.ModelName));
}
else
{
return(ModelBindingResult.SuccessAsync(bindingContext.ModelName, model));
}
}
catch (Exception ex)
{
bindingContext.ModelState.TryAddModelError(bindingContext.ModelName, ex);
// Were able to find a converter for the type but conversion failed.
// Tell the model binding system to skip other model binders.
return(ModelBindingResult.FailedAsync(bindingContext.ModelName));
}
}
public void SetProperty_ValueProvidedAndCanUpdatePropertyTrue_DoesNothing(
string propertyName,
Func<object, object> propertAccessor)
{
// Arrange
var model = new MyModelTestingCanUpdateProperty();
var type = model.GetType();
var bindingContext = CreateContext(GetMetadataForType(type), model);
var modelState = bindingContext.ModelState;
var metadataProvider = bindingContext.OperationBindingContext.MetadataProvider;
var modelExplorer = metadataProvider.GetModelExplorerForType(type, model);
var propertyMetadata = bindingContext.ModelMetadata.Properties[propertyName];
var result = new ModelBindingResult(
model: new Simple { Name = "Hanna" },
isModelSet: true,
key: propertyName);
var testableBinder = new TestableMutableObjectModelBinder();
// Act
testableBinder.SetProperty(bindingContext, modelExplorer, propertyMetadata, result);
// Assert
Assert.Equal("Joe", propertAccessor(model));
Assert.True(modelState.IsValid);
Assert.Empty(modelState);
}
public void ProcessResults_ValueTypeProperty_NoValue_NoError()
{
// Arrange
var model = new Person();
var containerMetadata = GetMetadataForType(model.GetType());
var bindingContext = CreateContext(containerMetadata, model);
var modelState = bindingContext.ModelState;
var results = containerMetadata.Properties.ToDictionary(
property => property,
property => new ModelBindingResult(model: null, key: property.PropertyName, isModelSet: false));
var testableBinder = new TestableMutableObjectModelBinder();
// Make ValueTypeRequired invalid.
var propertyMetadata = containerMetadata.Properties[nameof(Person.ValueTypeRequired)];
results[propertyMetadata] = new ModelBindingResult(
model: null,
isModelSet: false,
key: "theModel." + nameof(Person.ValueTypeRequired));
// Make ValueTypeRequiredWithDefaultValue invalid
propertyMetadata = containerMetadata.Properties[nameof(Person.ValueTypeRequiredWithDefaultValue)];
results[propertyMetadata] = new ModelBindingResult(
model: null,
isModelSet: false,
key: "theModel." + nameof(Person.ValueTypeRequiredWithDefaultValue));
var modelValidationNode = new ModelValidationNode(string.Empty, containerMetadata, model);
// Act
testableBinder.ProcessResults(bindingContext, results, modelValidationNode);
// Assert
Assert.True(modelState.IsValid);
}
public void SetProperty_PropertyIsSettable_CallsSetter()
{
// Arrange
var model = new Person();
var bindingContext = CreateContext(GetMetadataForType(model.GetType()), model);
var metadataProvider = bindingContext.OperationBindingContext.MetadataProvider;
var modelExplorer = metadataProvider.GetModelExplorerForType(typeof(Person), model);
var propertyMetadata = bindingContext.ModelMetadata.Properties[nameof(model.DateOfBirth)];
var result = new ModelBindingResult(new DateTime(2001, 1, 1), key: "foo", isModelSet: true);
var testableBinder = new TestableMutableObjectModelBinder();
// Act
testableBinder.SetProperty(bindingContext, modelExplorer, propertyMetadata, result);
// Assert
Assert.True(bindingContext.ModelState.IsValid);
Assert.Equal(new DateTime(2001, 1, 1), model.DateOfBirth);
}
public void ProcessResults_ProvideRequiredFields_Success()
{
// Arrange
var model = new Person();
var containerMetadata = GetMetadataForType(model.GetType());
var bindingContext = CreateContext(containerMetadata, model);
var modelStateDictionary = bindingContext.ModelState;
var results = containerMetadata.Properties.ToDictionary(
property => property,
property => new ModelBindingResult(model: null, key: property.PropertyName, isModelSet: false));
var testableBinder = new TestableMutableObjectModelBinder();
// Make ValueTypeRequired valid.
var propertyMetadata = containerMetadata.Properties[nameof(Person.ValueTypeRequired)];
results[propertyMetadata] = new ModelBindingResult(
model: 41,
isModelSet: true,
key: "theModel." + nameof(Person.ValueTypeRequired));
// Make ValueTypeRequiredWithDefaultValue valid.
propertyMetadata = containerMetadata.Properties[nameof(Person.ValueTypeRequiredWithDefaultValue)];
results[propertyMetadata] = new ModelBindingResult(
model: 57,
isModelSet: true,
key: "theModel." + nameof(Person.ValueTypeRequiredWithDefaultValue));
// Also remind ProcessResults about PropertyWithDefaultValue -- as BindPropertiesAsync() would.
propertyMetadata = containerMetadata.Properties[nameof(Person.PropertyWithDefaultValue)];
results[propertyMetadata] = new ModelBindingResult(
model: null,
isModelSet: false,
key: "theModel." + nameof(Person.PropertyWithDefaultValue));
var modelValidationNode = new ModelValidationNode(string.Empty, containerMetadata, model);
// Act
testableBinder.ProcessResults(bindingContext, results, modelValidationNode);
// Assert
Assert.True(modelStateDictionary.IsValid);
Assert.Empty(modelStateDictionary);
// Model gets provided values.
Assert.Equal(41, model.ValueTypeRequired);
Assert.Equal(57, model.ValueTypeRequiredWithDefaultValue);
Assert.Equal(0m, model.PropertyWithDefaultValue); // [DefaultValue] has no effect
}
public void SetProperty_SettingNonNullableValueTypeToNull_CapturesException()
{
// Arrange
var model = new Person();
var bindingContext = CreateContext(GetMetadataForType(model.GetType()), model);
var metadataProvider = bindingContext.OperationBindingContext.MetadataProvider;
var modelExplorer = metadataProvider.GetModelExplorerForType(typeof(Person), model);
var propertyMetadata = bindingContext.ModelMetadata.Properties[nameof(model.DateOfBirth)];
var result = new ModelBindingResult(model: null, isModelSet: true, key: "foo.DateOfBirth");
var testableBinder = new TestableMutableObjectModelBinder();
// Act
testableBinder.SetProperty(bindingContext, modelExplorer, propertyMetadata, result);
// Assert
Assert.False(bindingContext.ModelState.IsValid);
var entry = Assert.Single(bindingContext.ModelState, kvp => kvp.Key == "foo.DateOfBirth").Value;
var error = Assert.Single(entry.Errors);
Assert.Equal(string.Empty, error.ErrorMessage);
Assert.IsType<NullReferenceException>(error.Exception);
}
public void ProcessResults_ReferenceTypePropertyWithBindRequired_RequiredValidatorIgnored()
{
// Arrange
var model = new ModelWithBindRequiredAndRequiredAttribute();
var containerMetadata = GetMetadataForType(model.GetType());
var bindingContext = CreateContext(containerMetadata, model);
var modelStateDictionary = bindingContext.ModelState;
var results = containerMetadata.Properties.ToDictionary(
property => property,
property => new ModelBindingResult(model: null, key: property.PropertyName, isModelSet: false));
var testableBinder = new TestableMutableObjectModelBinder();
// Make ValueTypeProperty have a value.
var propertyMetadata = containerMetadata
.Properties[nameof(ModelWithBindRequiredAndRequiredAttribute.ValueTypeProperty)];
results[propertyMetadata] = new ModelBindingResult(
model: 17,
isModelSet: true,
key: "theModel." + nameof(ModelWithBindRequiredAndRequiredAttribute.ValueTypeProperty));
// Make ReferenceTypeProperty not have a value.
propertyMetadata = containerMetadata
.Properties[nameof(ModelWithBindRequiredAndRequiredAttribute.ReferenceTypeProperty)];
results[propertyMetadata] = new ModelBindingResult(
model: null,
isModelSet: false,
key: "theModel." + nameof(ModelWithBindRequiredAndRequiredAttribute.ReferenceTypeProperty));
var modelValidationNode = new ModelValidationNode(string.Empty, containerMetadata, model);
// Act
testableBinder.ProcessResults(bindingContext, results, modelValidationNode);
// Assert
Assert.False(modelStateDictionary.IsValid);
var entry = Assert.Single(
modelStateDictionary,
kvp => kvp.Key == "theModel." + nameof(ModelWithBindRequiredAndRequiredAttribute.ReferenceTypeProperty))
.Value;
var error = Assert.Single(entry.Errors);
Assert.Null(error.Exception);
Assert.Equal("A value for the 'ReferenceTypeProperty' property was not provided.", error.ErrorMessage);
// Model gets provided values.
Assert.Equal(17, model.ValueTypeProperty);
Assert.Null(model.ReferenceTypeProperty);
}
public new void SetProperty(
ModelBindingContext bindingContext,
ModelExplorer modelExplorer,
ModelMetadata propertyMetadata,
ModelBindingResult result)
{
base.SetProperty(bindingContext, modelExplorer, propertyMetadata, result);
}
public void ProcessResults_Success()
{
// Arrange
var dob = new DateTime(2001, 1, 1);
var model = new PersonWithBindExclusion
{
DateOfBirth = dob
};
var containerMetadata = GetMetadataForType(model.GetType());
var bindingContext = CreateContext(containerMetadata, model);
var results = containerMetadata.Properties.ToDictionary(
property => property,
property => new ModelBindingResult(model: null, key: property.PropertyName, isModelSet: false));
var firstNameProperty = containerMetadata.Properties[nameof(model.FirstName)];
results[firstNameProperty] = new ModelBindingResult(
model: "John",
isModelSet: true,
key: nameof(model.FirstName));
var lastNameProperty = containerMetadata.Properties[nameof(model.LastName)];
results[lastNameProperty] = new ModelBindingResult(
model: "Doe",
isModelSet: true,
key: nameof(model.LastName));
var modelValidationNode = new ModelValidationNode(string.Empty, containerMetadata, model);
var testableBinder = new TestableMutableObjectModelBinder();
// Act
testableBinder.ProcessResults(bindingContext, results, modelValidationNode);
// Assert
Assert.Equal("John", model.FirstName);
Assert.Equal("Doe", model.LastName);
Assert.Equal(dob, model.DateOfBirth);
Assert.True(bindingContext.ModelState.IsValid);
// Ensure that we add child nodes for all the nodes which have a result (irrespective of if they
// are bound or not).
Assert.Equal(5, modelValidationNode.ChildNodes.Count);
Assert.Collection(modelValidationNode.ChildNodes,
child =>
{
Assert.Equal(nameof(model.DateOfBirth), child.Key);
Assert.Equal(null, child.Model);
},
child =>
{
Assert.Equal(nameof(model.DateOfDeath), child.Key);
Assert.Equal(null, child.Model);
},
child =>
{
Assert.Equal(nameof(model.FirstName), child.Key);
Assert.Equal("John", child.Model);
},
child =>
{
Assert.Equal(nameof(model.LastName), child.Key);
Assert.Equal("Doe", child.Model);
},
child =>
{
Assert.Equal(nameof(model.NonUpdateableProperty), child.Key);
Assert.Equal(null, child.Model);
});
}
public void ProcessResults_ValueTypePropertyWithBindRequired_SetToNull_CapturesException()
{
// Arrange
var model = new ModelWithBindRequired
{
Name = "original value",
Age = -20
};
var containerMetadata = GetMetadataForType(model.GetType());
var bindingContext = new ModelBindingContext()
{
Model = model,
ModelMetadata = containerMetadata,
ModelName = "theModel",
ModelState = new ModelStateDictionary(),
OperationBindingContext = new OperationBindingContext
{
MetadataProvider = TestModelMetadataProvider.CreateDefaultProvider(),
ValidatorProvider = Mock.Of<IModelValidatorProvider>()
}
};
var results = containerMetadata.Properties.ToDictionary(
property => property,
property => new ModelBindingResult(model: null, key: property.PropertyName, isModelSet: false));
var propertyMetadata = containerMetadata.Properties[nameof(model.Name)];
results[propertyMetadata] = new ModelBindingResult("John Doe", isModelSet: true, key: "theModel.Name");
// Attempt to set non-Nullable property to null. BindRequiredAttribute should not be relevant in this
// case because the binding exists.
propertyMetadata = containerMetadata.Properties[nameof(model.Age)];
results[propertyMetadata] = new ModelBindingResult(model: null, isModelSet: true, key: "theModel.Age");
var testableBinder = new TestableMutableObjectModelBinder();
var modelValidationNode = new ModelValidationNode(string.Empty, containerMetadata, model);
// Act
testableBinder.ProcessResults(bindingContext, results, modelValidationNode);
// Assert
var modelStateDictionary = bindingContext.ModelState;
Assert.False(modelStateDictionary.IsValid);
Assert.Equal(1, modelStateDictionary.Count);
// Check Age error.
ModelState modelState;
Assert.True(modelStateDictionary.TryGetValue("theModel.Age", out modelState));
Assert.Equal(ModelValidationState.Invalid, modelState.ValidationState);
var modelError = Assert.Single(modelState.Errors);
Assert.Equal(string.Empty, modelError.ErrorMessage);
Assert.IsType<NullReferenceException>(modelError.Exception);
}
public void SetProperty_PropertyHasDefaultValue_DefaultValueAttributeDoesNothing()
{
// Arrange
var model = new Person();
var bindingContext = CreateContext(GetMetadataForType(model.GetType()), model);
var metadataProvider = bindingContext.OperationBindingContext.MetadataProvider;
var modelExplorer = metadataProvider.GetModelExplorerForType(typeof(Person), model);
var propertyMetadata = bindingContext.ModelMetadata.Properties[nameof(model.PropertyWithDefaultValue)];
var result = new ModelBindingResult(model: null, isModelSet: false, key: "foo");
var testableBinder = new TestableMutableObjectModelBinder();
// Act
testableBinder.SetProperty(bindingContext, modelExplorer, propertyMetadata, result);
// Assert
var person = Assert.IsType<Person>(bindingContext.Model);
Assert.Equal(0m, person.PropertyWithDefaultValue);
Assert.True(bindingContext.ModelState.IsValid);
}
/// <summary>
/// Attempts to bind the model using formatters.
/// </summary>
/// <param name="bindingContext">The <see cref="ModelBindingContext"/>.</param>
/// <returns>
/// A <see cref="Task{ModelBindingResult}"/> which when completed returns a <see cref="ModelBindingResult"/>.
/// </returns>
private async Task <ModelBindingResult> BindModelCoreAsync(ModelBindingContext bindingContext)
{
if (bindingContext == null)
{
throw new ArgumentNullException(nameof(bindingContext));
}
// For compatibility with MVC 5.0 for top level object we want to consider an empty key instead of
// the parameter name/a custom name. In all other cases (like when binding body to a property) we
// consider the entire ModelName as a prefix.
var modelBindingKey = bindingContext.IsTopLevelObject ? string.Empty : bindingContext.ModelName;
var httpContext = bindingContext.OperationBindingContext.HttpContext;
var formatterContext = new InputFormatterContext(
httpContext,
modelBindingKey,
bindingContext.ModelState,
bindingContext.ModelMetadata,
_readerFactory);
var formatters = bindingContext.OperationBindingContext.InputFormatters;
var formatter = formatters.FirstOrDefault(f => f.CanRead(formatterContext));
if (formatter == null)
{
var unsupportedContentType = Resources.FormatUnsupportedContentType(
bindingContext.OperationBindingContext.HttpContext.Request.ContentType);
bindingContext.ModelState.AddModelError(modelBindingKey, unsupportedContentType);
// This model binder is the only handler for the Body binding source and it cannot run twice. Always
// tell the model binding system to skip other model binders and never to fall back i.e. indicate a
// fatal error.
return(ModelBindingResult.Failed(modelBindingKey));
}
try
{
var previousCount = bindingContext.ModelState.ErrorCount;
var result = await formatter.ReadAsync(formatterContext);
var model = result.Model;
// Ensure a "modelBindingKey" entry exists whether or not formatting was successful.
bindingContext.ModelState.SetModelValue(modelBindingKey, rawValue: model, attemptedValue: null);
if (result.HasError)
{
// Formatter encountered an error. Do not use the model it returned. As above, tell the model
// binding system to skip other model binders and never to fall back.
return(ModelBindingResult.Failed(modelBindingKey));
}
return(ModelBindingResult.Success(modelBindingKey, model));
}
catch (Exception ex)
{
bindingContext.ModelState.AddModelError(modelBindingKey, ex, bindingContext.ModelMetadata);
// This model binder is the only handler for the Body binding source and it cannot run twice. Always
// tell the model binding system to skip other model binders and never to fall back i.e. indicate a
// fatal error.
return(ModelBindingResult.Failed(modelBindingKey));
}
}
public void SetProperty_PropertyHasDefaultValue_SetsDefaultValue()
{
// Arrange
var model = new Person();
var bindingContext = CreateContext(GetMetadataForType(model.GetType()), model);
var metadataProvider = bindingContext.OperationBindingContext.MetadataProvider;
var modelExplorer = metadataProvider.GetModelExplorerForType(typeof(Person), model);
var propertyMetadata = bindingContext.ModelMetadata.Properties["PropertyWithDefaultValue"];
var dtoResult = new ModelBindingResult(
model: null,
isModelSet: false,
key: "foo");
var validatorProvider = bindingContext.OperationBindingContext.ValidatorProvider;
var validatorProviderContext = new ModelValidatorProviderContext(propertyMetadata);
validatorProvider.GetValidators(validatorProviderContext);
var requiredValidator = validatorProviderContext.Validators.FirstOrDefault(v => v.IsRequired);
var testableBinder = new TestableMutableObjectModelBinder();
// Act
testableBinder.SetProperty(
bindingContext,
modelExplorer,
propertyMetadata,
dtoResult,
requiredValidator);
// Assert
var person = Assert.IsType<Person>(bindingContext.Model);
Assert.Equal(123.456m, person.PropertyWithDefaultValue);
Assert.True(bindingContext.ModelState.IsValid);
}