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//
// AttributeTest.cs - NUnit Test Cases for the System.Attribute class
//
// Authors:
// Duco Fijma (duco@lorentz.xs4all.nl)
// Gonzalo Paniagua (gonzalo@ximian.com)
// Gert Driesen (drieseng@users.sourceforge.net)
//
// (C) 2002 Duco Fijma
// (c) 2004 Novell, Inc. (http://www.novell.com)
//
using NUnit.Framework;
using System;
using System.Reflection;
namespace MonoTests.System
{
using MonoTests.System.AttributeTestInternals;
namespace AttributeTestInternals
{
[AttributeUsage (AttributeTargets.Class, AllowMultiple = true, Inherited = false)]
internal class MyCustomAttribute : Attribute
{
private string _info;
public MyCustomAttribute (string info)
{
_info = info;
}
public string Info
{
get
{
return _info;
}
}
}
[AttributeUsage (AttributeTargets.Class)]
internal class YourCustomAttribute : Attribute
{
private int _value;
public YourCustomAttribute (int value)
{
_value = value;
}
public int Value
{
get
{
return _value;
}
}
}
[AttributeUsage (AttributeTargets.Class)]
internal class UnusedAttribute : Attribute
{
}
[MyCustomAttribute ("MyBaseClass"), YourCustomAttribute (37)]
internal class MyClass
{
int Value { get { return 42; } }
public static void ParamsMethod(params object[] args)
{
}
}
[MyCustomAttribute ("MyDerivedClass")]
internal class MyDerivedClass : MyClass
{
public void Do () { }
}
}
[TestFixture]
public class AttributeTest : Assertion
{
public AttributeTest () { }
public void TestIsDefined ()
{
AssertEquals ("A1", true, Attribute.IsDefined (typeof(MyDerivedClass), typeof(MyCustomAttribute)));
AssertEquals ("A2", true, Attribute.IsDefined (typeof(MyDerivedClass), typeof(YourCustomAttribute)));
AssertEquals ("A3", false, Attribute.IsDefined (typeof(MyDerivedClass), typeof(UnusedAttribute)));
AssertEquals ("A4", true, Attribute.IsDefined (typeof(MyDerivedClass), typeof(MyCustomAttribute), true));
AssertEquals ("A5", true, Attribute.IsDefined (typeof(MyDerivedClass), typeof(YourCustomAttribute), true));
AssertEquals ("A6", false, Attribute.IsDefined (typeof(MyDerivedClass), typeof(UnusedAttribute), false));
AssertEquals ("A7", true, Attribute.IsDefined (typeof(MyDerivedClass), typeof(MyCustomAttribute), false));
AssertEquals ("A8", false, Attribute.IsDefined (typeof(MyDerivedClass), typeof(YourCustomAttribute), false));
AssertEquals ("A9", false, Attribute.IsDefined (typeof(MyDerivedClass), typeof(UnusedAttribute), false));
AssertEquals ("A10", true, Attribute.IsDefined (typeof (MyClass).GetMethod ("ParamsMethod").GetParameters ()[0], typeof (ParamArrayAttribute), false));
}
public void TestGetCustomAttribute ()
{
int i = 1;
Type t = typeof(MyDerivedClass);
try
{
AssertEquals ("A1", "MyDerivedClass", ((MyCustomAttribute) (Attribute.GetCustomAttribute (typeof(MyDerivedClass), typeof(MyCustomAttribute), false))).Info);
i++;
AssertEquals ("A2", null, ((YourCustomAttribute) (Attribute.GetCustomAttribute (typeof(MyDerivedClass), typeof(YourCustomAttribute), false))));
i++;
AssertEquals ("A3", "MyDerivedClass", ((MyCustomAttribute) (Attribute.GetCustomAttribute (typeof(MyDerivedClass), typeof(MyCustomAttribute)))).Info);
i++;
Console.WriteLine ("A4a");
AssertNotNull ("A4a", Attribute.GetCustomAttribute (t, typeof(YourCustomAttribute)));
i++;
AssertEquals ("A4", 37, ((YourCustomAttribute) (Attribute.GetCustomAttribute (t, typeof(YourCustomAttribute)))).Value);
}
catch (Exception e)
{
Fail ("Unexpected exception thrown at i=" + i + " with t=" + t + ". e=" + e);
}
}
/* Test for bug 54518 */
[AttributeUsage (AttributeTargets.Field | AttributeTargets.Property)]
public class PropTestAttribute : Attribute
{
public PropTestAttribute () { }
}
public class TestBase
{
public TestBase () { }
[PropTest]
public int PropBase1
{
get { return 0; }
set { }
}
[PropTest]
public string PropBase2
{
get { return ""; }
set { }
}
}
public class TestSub : TestBase
{
public TestSub () { }
[PropTest]
public int PropSub1
{
get { return 0; }
set { }
}
[PropTest]
public string PropSub2
{
get { return ""; }
set { }
}
}
[Test]
public void BaseAttributes ()
{
object[] attrs;
PropertyInfo[] props = typeof (TestSub).GetProperties (BindingFlags.Public | BindingFlags.Instance);
foreach (PropertyInfo prop in props)
{
attrs = prop.GetCustomAttributes (typeof(PropTestAttribute), true);
AssertEquals (prop.Name, true, attrs.Length > 0);
}
}
[Test]
public void GetCustomAttributeOK ()
{
Attribute attribute = Attribute.GetCustomAttribute (typeof(ClassA),
typeof(DerivedTestCustomAttributeInherit));
AssertNotNull ("GetCustomAttributeNull", attribute);
}
[NUnit.Framework.Test]
[ExpectedException (typeof(AmbiguousMatchException))]
public void GetCustomAttributeAmbiguous ()
{
Attribute.GetCustomAttribute (typeof(ClassA), typeof(TestCustomAttribute));
}
[Test]
public void GetCustomAttributeNull ()
{
Attribute attribute = Attribute.GetCustomAttribute (typeof(ClassA),
typeof(DerivedTestCustomAttributeMultipleInherit));
AssertNull ("GetCustomAttributeNull", attribute);
}
[Test]
public void GetCustomAttributesTypeNoInherit ()
{
object[] attributes;
attributes = Attribute.GetCustomAttributes (typeof(ClassA), false);
AssertEquals ("GetCustomAttributesTypeNoInherit#1", 3, attributes.Length);
AssertEquals ("GetCustomAttributesTypeNoInherit#2", 1, GetAttributeCount (
attributes, typeof(TestCustomAttribute)));
AssertEquals ("GetCustomAttributesTypeNoInherit#3", 1, GetAttributeCount (
attributes, typeof(DerivedTestCustomAttributeMultiple)));
AssertEquals ("GetCustomAttributesTypeNoInherit#4", 1, GetAttributeCount (
attributes, typeof(DerivedTestCustomAttributeInherit)));
attributes = Attribute.GetCustomAttributes (typeof(ClassB), false);
AssertEquals ("GetCustomAttributesTypeNoInherit#5", 4, attributes.Length);
AssertEquals ("GetCustomAttributesTypeNoInherit#2", 1, GetAttributeCount (
attributes, typeof(TestCustomAttribute)));
AssertEquals ("GetCustomAttributesTypeNoInherit#3", 2, GetAttributeCount (
attributes, typeof(DerivedTestCustomAttributeMultiple)));
AssertEquals ("GetCustomAttributesTypeNoInherit#4", 1, GetAttributeCount (
attributes, typeof(DerivedTestCustomAttributeMultipleInherit)));
}
[Test]
public void GetCustomAttributesTypeInherit ()
{
object[] attributes;
attributes = Attribute.GetCustomAttributes (typeof(ClassA), true);
AssertEquals ("GetCustomAttributesTypeInherit#1", 3, attributes.Length);
AssertEquals ("GetCustomAttributesTypeInherit#2", 1, GetAttributeCount (
attributes, typeof(TestCustomAttribute)));
AssertEquals ("GetCustomAttributesTypeInherit#3", 1, GetAttributeCount (
attributes, typeof(DerivedTestCustomAttributeMultiple)));
AssertEquals ("GetCustomAttributesTypeInherit#4", 1, GetAttributeCount (
attributes, typeof(DerivedTestCustomAttributeInherit)));
attributes = Attribute.GetCustomAttributes (typeof(ClassB), true);
AssertEquals ("GetCustomAttributesTypeInherit#5", 5, attributes.Length);
AssertEquals ("GetCustomAttributesTypeInherit#6", 1, GetAttributeCount (
attributes, typeof(TestCustomAttribute)));
AssertEquals ("GetCustomAttributesTypeInherit#7", 2, GetAttributeCount (
attributes, typeof(DerivedTestCustomAttributeMultiple)));
AssertEquals ("GetCustomAttributesTypeInherit#8", 1, GetAttributeCount (
attributes, typeof(DerivedTestCustomAttributeInherit)));
AssertEquals ("GetCustomAttributesTypeInherit#9", 1, GetAttributeCount (
attributes, typeof(DerivedTestCustomAttributeMultipleInherit)));
}
[Test]
public void TestEquality ()
{
MyCustomAttribute a = new MyCustomAttribute ("one");
MyCustomAttribute b = new MyCustomAttribute ("two");
MyCustomAttribute c = new MyCustomAttribute ("one");
MyCustomAttribute d = a;
AssertEquals ("Attribute, TestEquality #1", true, a.Equals (c));
AssertEquals ("Attribute, TestEquality #2", true, c.Equals (a));
AssertEquals ("Attribute, TestEquality #3", false, c.Equals (b));
AssertEquals ("Attribute, TestEquality #4", false, b.Equals (a));
AssertEquals ("Attribute, TestEquality #5", false, b.Equals (c));
AssertEquals ("Attribute, TestEquality #6", true, a.Equals (a));
AssertEquals ("Attribute, TestEquality #7", true, a.Equals (d));
AssertEquals ("Attribute, TestEquality #7", false, a.Equals (null));
}
private int GetAttributeCount (object[] attributes, Type attributeType)
{
int counter = 0;
foreach (Attribute attribute in attributes)
{
if (attribute.GetType () == attributeType)
{
counter++;
}
}
return counter;
}
[AttributeUsage (AttributeTargets.All, AllowMultiple = false, Inherited = true)]
private class TestCustomAttribute : Attribute
{
}
[AttributeUsage (AttributeTargets.All, AllowMultiple = true, Inherited = false)]
private class DerivedTestCustomAttributeMultiple : TestCustomAttribute
{
}
[AttributeUsage (AttributeTargets.All, AllowMultiple = false, Inherited = true)]
private class DerivedTestCustomAttributeInherit : TestCustomAttribute
{
}
[AttributeUsage (AttributeTargets.All, AllowMultiple = true, Inherited = true)]
private class DerivedTestCustomAttributeMultipleInherit : TestCustomAttribute
{
}
[TestCustomAttribute]
[DerivedTestCustomAttributeMultiple]
[DerivedTestCustomAttributeInherit]
private class ClassA
{
}
[TestCustomAttribute ()]
[DerivedTestCustomAttributeMultiple ()]
[DerivedTestCustomAttributeMultiple ()]
[DerivedTestCustomAttributeMultipleInherit ()]
private class ClassB : ClassA
{
}
[TestCustomAttribute ()]
[DerivedTestCustomAttributeMultiple ()]
[DerivedTestCustomAttributeMultipleInherit ()]
private class ClassC : ClassB
{
}
}
}
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