protected override void OnGetValue(PropertySpecEventArgs e)
{
base.OnGetValue(e);
var attributeList = new List <Attribute>();
attributeList.AddRange(e.Property.Attributes.ToList());
//check all of the attributes: if we find a dynamic one, evaluate it and possibly add/overwrite a static attribute
foreach (Attribute customAttribute in e.Property.Attributes)
{
if (customAttribute is DynamicReadOnlyAttribute)
{
attributeList.RemoveAll(x => x is ReadOnlyAttribute);
if (DynamicReadOnlyAttribute.IsDynamicReadOnly(propertyObject, e.Property.Name))
{
//condition is true: the dynamic attribute should be applied (as static attribute)
attributeList.Add(new ReadOnlyAttribute(true)); //add static read only attribute
}
}
}
e.Property.Attributes = attributeList.ToArray();
var propertyInfo = propertyObject.GetType().GetProperty(e.Property.Name);
var value = propertyInfo.GetValue(propertyObject, null);
var isNestedPropertiesObject = IsNestedExpandablePropertiesObject(propertyInfo);
// if nested properties object, wrap in DynamicPropertyBag to provide support for things like DynamicReadOnly
e.Value = isNestedPropertiesObject ? new DynamicPropertyBag(value) : value;
}
public void IsReadOnly_NoPropertyName_ReturnFalse(string propertyName)
{
// Call
bool isReadOnly = DynamicReadOnlyAttribute.IsReadOnly(new object(), propertyName);
// Assert
Assert.IsFalse(isReadOnly);
}
public void DefaultConstructor_ExpectedValues()
{
// Call
var attribute = new DynamicReadOnlyAttribute();
// Assert
Assert.IsInstanceOf <Attribute>(attribute);
}
public void IsReadOnly_GivenPropertyDoesNotHaveDynamicReadOnlyAttribute_ReturnFalse()
{
// Setup
var o = new ClassWithPropertyWithoutDynamicReadOnlyAttribute();
// Call
bool isReadOnly = DynamicReadOnlyAttribute.IsReadOnly(o, "Property");
// Assert
Assert.IsFalse(isReadOnly);
}
public void IsReadOnly_ClassWithDynamicReadOnlyProperty_ReturnResultFromValidationMethod(bool isReadOnly)
{
// Setup
var o = new ClassWithDynamicReadOnlyProperty(isReadOnly);
// Call
bool result = DynamicReadOnlyAttribute.IsReadOnly(o, "Property");
// Assert
Assert.AreEqual(isReadOnly, result);
}
public void IsReadOnly_GivenPropertyNameDoesNotExistOnObject_ThrowMissingMemberException()
{
// Setup
var o = new object();
// Call
TestDelegate call = () => DynamicReadOnlyAttribute.IsReadOnly(o, "NotExistingProperty");
// Assert
string exceptionMessage = Assert.Throws <MissingMemberException>(call).Message;
Assert.AreEqual($"Kon eigenschap NotExistingProperty van type {o.GetType()} niet vinden.", exceptionMessage);
}
public void IsReadOnly_ClassHasMultipleDynamicReadOnlyValidationMethods_ThrowsMissingMethodException()
{
// Setup
var o = new InvalidClassWithDynamicReadOnlyPropertyAndMultipleValidationMethods();
// Call
TestDelegate call = () => DynamicReadOnlyAttribute.IsReadOnly(o, "Property");
// Assert
string exceptionMessage = Assert.Throws <MissingMethodException>(call).Message;
string expectedMessage = $"Slechts één DynamicReadOnlyValidationMethod toegestaan per klasse: {o.GetType()}.";
Assert.AreEqual(expectedMessage, exceptionMessage);
}
public void IsReadOnly_ClassLacksDynamicReadOnlyValidationMethod_ThrowsMissingMethodException()
{
// Setup
var o = new InvalidClassWithDynamicReadOnlyPropertyButNoValidationMethod();
// Call
TestDelegate call = () => DynamicReadOnlyAttribute.IsReadOnly(o, "Property");
// Assert
string exceptionMessage = Assert.Throws <MissingMethodException>(call).Message;
string expectedMessage = $"DynamicReadOnlyValidationMethod niet gevonden (of geen 'public' toegankelijkheid). Klasse: {o.GetType()}.";
Assert.AreEqual(expectedMessage, exceptionMessage);
}
public void IsReadOnly_ClassHasDynamicReadOnlyValidationMethodWithIncorrectArgumentType_ThrowsMissingMethodException()
{
// Setup
var o = new InvalidClassWithDynamicReadOnlyPropertyButValidationMethodArgumentNotString();
// Call
TestDelegate call = () => DynamicReadOnlyAttribute.IsReadOnly(o, "Property");
// Assert
string exceptionMessage = Assert.Throws <MissingMethodException>(call).Message;
string expectedMessage = $"Argument van DynamicReadOnlyValidationMethod moet van het type 'string' zijn. Klasse: {o.GetType()}.";
Assert.AreEqual(expectedMessage, exceptionMessage);
}
public void IsReadOnly_ClassHasDynamicReadOnlyValidationMethodWithIncorrectArgumentCount_ThrowsMissingMethodException()
{
// Setup
var o = new InvalidClassWithDynamicReadOnlyPropertyButValidationMethodNotOneArgument();
// Call
TestDelegate call = () => DynamicReadOnlyAttribute.IsReadOnly(o, "Property");
// Assert
string exceptionMessage = Assert.Throws <MissingMethodException>(call).Message;
string expectedMessage = $"DynamicReadOnlyValidationMethod heeft een incorrect aantal argumenten. Zou er één moeten zijn. Klasse: {o.GetType()}.";
Assert.AreEqual(expectedMessage, exceptionMessage);
}
public void IsReadOnly_ClassHasDynamicReadOnlyValidationMethodWithNonBoolReturnType_ThrowsMissingMethodException()
{
// Setup
var o = new InvalidClassWithDynamicReadOnlyPropertyButValidationMethodReturnsIncorrectValueType();
// Call
TestDelegate call = () => DynamicReadOnlyAttribute.IsReadOnly(o, "Property");
// Assert
string exceptionMessage = Assert.Throws <MissingMethodException>(call).Message;
string expectedMessage = $"DynamicReadOnlyValidationMethod moet 'bool' als 'return type' hebben. Klasse: {o.GetType()}.";
Assert.AreEqual(expectedMessage, exceptionMessage);
}
