public void FromStringExpressionNonNullItemFoundOnPropertyOfItemInViewData()
{
using (MockModelMetadataProvider provider = new MockModelMetadataProvider()) {
// Arrange
DummyModelContainer model = new DummyModelContainer {
Model = new DummyContactModel()
};
ViewDataDictionary viewData = new ViewDataDictionary();
viewData["Object"] = model;
provider.Setup(p => p.GetMetadataForProperty(It.IsAny <Func <object> >(), It.IsAny <Type>(), It.IsAny <string>()))
.Callback <Func <object>, Type, string>((accessor, type, propertyName) =>
{
Assert.AreSame(model.Model, accessor());
Assert.AreEqual(typeof(DummyModelContainer), type);
Assert.AreEqual("Model", propertyName);
})
.Returns(() => null)
.Verifiable();
// Act
ModelMetadata.FromStringExpression("Object.Model", viewData);
// Assert
provider.Verify();
}
}
public void FromLambdaExpressionPropertyExpressionFromClosureValue()
{
using (MockModelMetadataProvider provider = new MockModelMetadataProvider()) {
// Arrange
DummyContactModel model = new DummyContactModel {
FirstName = "Test"
};
ViewDataDictionary <object> viewData = new ViewDataDictionary <object>();
provider.Setup(p => p.GetMetadataForProperty(It.IsAny <Func <object> >(), It.IsAny <Type>(), It.IsAny <string>()))
.Callback <Func <object>, Type, string>((accessor, type, propertyName) =>
{
Assert.AreEqual("Test", accessor());
Assert.AreEqual(typeof(DummyContactModel), type);
Assert.AreEqual("FirstName", propertyName);
})
.Returns(() => null)
.Verifiable();
// Act
ModelMetadata.FromLambdaExpression <object, string>(m => model.FirstName, viewData);
// Assert
provider.Verify();
}
}
public void FromLambdaExpressionModelIdentityExpressionReturnsExistingModelMetadata()
{
using (MockModelMetadataProvider provider = new MockModelMetadataProvider()) {
// Arrange
ModelMetadata metadata = new ModelMetadata(provider.Object, null, null, typeof(object), null);
ViewDataDictionary <object> viewData = new ViewDataDictionary <object>();
viewData.ModelMetadata = metadata;
// Act
ModelMetadata result = ModelMetadata.FromLambdaExpression <object, object>(m => m, viewData);
// Assert
Assert.AreSame(metadata, result);
}
}
public void FromStringExpressionEmptyExpressionReturnsExistingModelMetadata()
{
using (MockModelMetadataProvider provider = new MockModelMetadataProvider()) {
// Arrange
ModelMetadata metadata = new ModelMetadata(provider.Object, null, null, typeof(object), null);
ViewDataDictionary viewData = new ViewDataDictionary();
viewData.ModelMetadata = metadata;
// Act
ModelMetadata result = ModelMetadata.FromStringExpression(String.Empty, viewData);
// Assert
Assert.AreSame(metadata, result);
}
}
public void FromStringExpressionItemNotFoundInViewData()
{
using (MockModelMetadataProvider provider = new MockModelMetadataProvider()) {
// Arrange
ViewDataDictionary viewData = new ViewDataDictionary();
provider.Setup(p => p.GetMetadataForType(It.IsAny <Func <object> >(), It.IsAny <Type>()))
.Callback <Func <object>, Type>((accessor, type) =>
{
Assert.IsNull(accessor);
Assert.AreEqual(typeof(string), type); // Don't know the type, must fall back on string
})
.Returns(() => null)
.Verifiable();
// Act
ModelMetadata.FromStringExpression("UnknownObject", viewData);
// Assert
provider.Verify();
}
}
public void FromLambdaExpressionSetsContainerTypeToDerivedMostType() // Dev10 Bug #868619
{
using (MockModelMetadataProvider provider = new MockModelMetadataProvider()) {
// Arrange
ViewDataDictionary <DerivedModel> viewData = new ViewDataDictionary <DerivedModel>();
provider.Setup(p => p.GetMetadataForProperty(It.IsAny <Func <object> >(), It.IsAny <Type>(), It.IsAny <string>()))
.Callback <Func <object>, Type, string>((accessor, type, propertyName) =>
{
Assert.IsNull(accessor());
Assert.AreEqual(typeof(DerivedModel), type);
Assert.AreEqual("MyProperty", propertyName);
})
.Returns(() => null)
.Verifiable();
// Act
ModelMetadata.FromLambdaExpression <DerivedModel, string>(m => m.MyProperty, viewData);
// Assert
provider.Verify();
}
}
public void FromLambdaExpressionNullReferenceExceptionsInPropertyExpressionPreserveAllExpressionInformation()
{
using (MockModelMetadataProvider provider = new MockModelMetadataProvider()) {
// Arrange
ViewDataDictionary <DummyContactModel> viewData = new ViewDataDictionary <DummyContactModel>();
provider.Setup(p => p.GetMetadataForProperty(It.IsAny <Func <object> >(), It.IsAny <Type>(), It.IsAny <string>()))
.Callback <Func <object>, Type, string>((accessor, type, propertyName) =>
{
Assert.IsNull(accessor());
Assert.AreEqual(typeof(DummyContactModel), type);
Assert.AreEqual("FirstName", propertyName);
})
.Returns(() => null)
.Verifiable();
// Act
ModelMetadata.FromLambdaExpression <DummyContactModel, string>(m => m.FirstName, viewData);
// Assert
provider.Verify();
}
}
public void FromLambdaExpressionSingleParameterClassIndexer()
{
using (MockModelMetadataProvider provider = new MockModelMetadataProvider()) {
// Arrange
DummyContactModel model = new DummyContactModel();
ViewDataDictionary <DummyContactModel> viewData = new ViewDataDictionary <DummyContactModel>(model);
provider.Setup(p => p.GetMetadataForType(It.IsAny <Func <object> >(), It.IsAny <Type>()))
.Callback <Func <object>, Type>((accessor, type) =>
{
Assert.AreEqual("Indexed into 42", accessor());
Assert.AreEqual(typeof(string), type);
})
.Returns(() => null)
.Verifiable();
// Act
ModelMetadata.FromLambdaExpression <DummyContactModel, string>(m => m[42], viewData);
// Assert
provider.Verify();
}
}
public void FromLambdaExpressionFieldExpressionFromClosureValue()
{
using (MockModelMetadataProvider provider = new MockModelMetadataProvider()) {
// Arrange
DummyContactModel model = new DummyContactModel();
ViewDataDictionary <object> viewData = new ViewDataDictionary <object>();
provider.Setup(p => p.GetMetadataForType(It.IsAny <Func <object> >(), It.IsAny <Type>()))
.Callback <Func <object>, Type>((accessor, type) =>
{
Assert.AreSame(model, accessor());
Assert.AreEqual(typeof(DummyContactModel), type);
})
.Returns(() => null)
.Verifiable();
// Act
ModelMetadata.FromLambdaExpression <object, DummyContactModel>(m => model, viewData);
// Assert
provider.Verify();
}
}
public void FromStringExpressionNonNullItemFoundAtRootOfViewData()
{
using (MockModelMetadataProvider provider = new MockModelMetadataProvider()) {
// Arrange
object model = new object();
ViewDataDictionary viewData = new ViewDataDictionary();
viewData["Object"] = model;
provider.Setup(p => p.GetMetadataForType(It.IsAny <Func <object> >(), It.IsAny <Type>()))
.Callback <Func <object>, Type>((accessor, type) =>
{
Assert.AreSame(model, accessor());
Assert.AreEqual(typeof(object), type);
})
.Returns(() => null)
.Verifiable();
// Act
ModelMetadata.FromStringExpression("Object", viewData);
// Assert
provider.Verify();
}
}
public void FromLambdaExpressionSingleDimensionArrayIndex()
{
using (MockModelMetadataProvider provider = new MockModelMetadataProvider()) {
// Arrange
DummyContactModel model = new DummyContactModel {
Array = new[] { 4, 8, 15, 16, 23, 42 }
};
ViewDataDictionary <DummyContactModel> viewData = new ViewDataDictionary <DummyContactModel>(model);
provider.Setup(p => p.GetMetadataForType(It.IsAny <Func <object> >(), It.IsAny <Type>()))
.Callback <Func <object>, Type>((accessor, type) =>
{
Assert.AreEqual(16, accessor());
Assert.AreEqual(typeof(int), type);
})
.Returns(() => null)
.Verifiable();
// Act
ModelMetadata.FromLambdaExpression <DummyContactModel, int>(m => m.Array[3], viewData);
// Assert
provider.Verify();
}
}
public void FromLambdaExpressionFieldExpressionFromParameter()
{
using (MockModelMetadataProvider provider = new MockModelMetadataProvider()) {
// Arrange
DummyContactModel model = new DummyContactModel {
IntField = 42
};
ViewDataDictionary <DummyContactModel> viewData = new ViewDataDictionary <DummyContactModel>(model);
provider.Expect(p => p.GetMetadataForType(It.IsAny <Func <object> >(), It.IsAny <Type>()))
.Callback <Func <object>, Type>((accessor, type) =>
{
Assert.AreEqual(42, accessor());
Assert.AreEqual(typeof(int), type);
})
.Returns(() => null)
.Verifiable();
// Act
ModelMetadata.FromLambdaExpression <DummyContactModel, int>(m => m.IntField, viewData);
// Assert
provider.Verify();
}
}