public static void TestClosedStaticDelegate()
{
TestClass foo = new TestClass();
foo.structField.o1 = new object();
foo.structField.o2 = new object();
StructReturningDelegate testDelegate = foo.TestFunc;
TestStruct returnedStruct = testDelegate();
Assert.True(RuntimeHelpers.ReferenceEquals(foo.structField.o1, returnedStruct.o1));
Assert.True(RuntimeHelpers.ReferenceEquals(foo.structField.o2, returnedStruct.o2));
}
public void WeakReference_NonGeneric()
{
object o1 = new char[10];
WeakReference w = new WeakReference(o1);
VerifyStillAlive(w);
Assert.IsTrue(RuntimeHelpers.ReferenceEquals(o1, w.Target));
Assert.IsFalse(w.TrackResurrection);
GC.KeepAlive(o1);
object o2 = new char[100];
w.Target = o2;
VerifyStillAlive(w);
Assert.IsTrue(RuntimeHelpers.ReferenceEquals(o2, w.Target));
GC.KeepAlive(o2);
Latch l = new Latch();
w = MakeWeakReference(() => new C(l), null);
GC.Collect();
VerifyIsDead(w);
// WARN: Compact Framework does not support to track resurrection
#if !WindowsCE
l = new Latch();
w = MakeWeakReference(() => new ResurrectingC(l), true);
GC.Collect();
GC.WaitForPendingFinalizers();
if (!l.FinalizerRan)
{
Console.WriteLine("Attempted GC but could not force test object to finalize. Test skipped.");
}
else
{
VerifyStillAlive(w);
}
l = new Latch();
w = MakeWeakReference(() => new C(l), true);
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
if (!l.FinalizerRan)
{
Console.WriteLine("Attempted GC but could not force test object to finalize. Test skipped.");
}
else
{
VerifyIsDead(w);
}
#endif
}
public static void NonGeneric()
{
object o1 = new char[10];
WeakReference w = new WeakReference(o1);
VerifyStillAlive(w);
Assert.True(RuntimeHelpers.ReferenceEquals(o1, w.Target));
Assert.False(w.TrackResurrection);
GC.KeepAlive(o1);
object o2 = new char[100];
w.Target = o2;
VerifyStillAlive(w);
Assert.True(RuntimeHelpers.ReferenceEquals(o2, w.Target));
GC.KeepAlive(o2);
Latch l = new Latch();
w = MakeWeakReference(() => new C(l));
GC.Collect();
VerifyIsDead(w);
l = new Latch();
w = MakeWeakReference(() => new ResurrectingC(l), true);
GC.Collect();
GC.WaitForPendingFinalizers();
if (!l.FinalizerRan)
{
Console.WriteLine("Attempted GC but could not force test object to finalize. Test skipped.");
}
else
{
VerifyStillAlive(w);
}
l = new Latch();
w = MakeWeakReference(() => new C(l), true);
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
if (!l.FinalizerRan)
{
Console.WriteLine("Attempted GC but could not force test object to finalize. Test skipped.");
}
else
{
VerifyIsDead(w);
}
}
public static void Equals()
{
C c = new C();
DFoo d1 = c.Foo;
DFoo d2 = c.Foo;
Assert.False(RuntimeHelpers.ReferenceEquals(d1, d2));
bool b;
b = d1.Equals(d2);
Assert.True(b);
Assert.True(d1 == d2);
Assert.False(d1 != d2);
d1 = c.Foo;
d2 = c.Goo;
b = d1.Equals(d2);
Assert.False(b);
Assert.False(d1 == d2);
Assert.True(d1 != d2);
d1 = new C().Foo;
d2 = new C().Foo;
b = d1.Equals(d2);
Assert.False(b);
Assert.False(d1 == d2);
Assert.True(d1 != d2);
DGoo dgoo = c.Foo;
d1 = c.Foo;
b = d1.Equals(dgoo);
Assert.False(b);
int h = d1.GetHashCode();
int h2 = d1.GetHashCode();
Assert.Equal(h, h2);
}
public static void TestDynamicInvoke()
{
A a1 = new A();
A a2 = new A();
B b1 = new B();
B b2 = new B();
DynamicInvokeDelegate testDelegate = DynamicInvokeTestFunction;
// Check that the delegate behaves as expected
A refParam = b2;
B outParam = null;
A returnValue = testDelegate(a1, b1, ref refParam, out outParam);
Assert.True(RuntimeHelpers.ReferenceEquals(returnValue, a1));
Assert.True(RuntimeHelpers.ReferenceEquals(refParam, b1));
Assert.True(RuntimeHelpers.ReferenceEquals(outParam, b2));
// Check dynamic invoke behavior
object[] parameters = new object[4];
parameters[0] = a1;
parameters[1] = b1;
parameters[2] = b2;
parameters[3] = null;
object retVal = testDelegate.DynamicInvoke(parameters);
Assert.True(RuntimeHelpers.ReferenceEquals(retVal, a1));
Assert.True(RuntimeHelpers.ReferenceEquals(parameters[2], b1));
Assert.True(RuntimeHelpers.ReferenceEquals(parameters[3], b2));
// Check invoke on a delegate that takes no parameters.
Action emptyDelegate = EmptyFunc;
emptyDelegate.DynamicInvoke(new object[] { });
emptyDelegate.DynamicInvoke(null);
}
public bool Equals(Vessel foo1, Vessel foo2)
{
return(RuntimeHelpers.ReferenceEquals(foo1, foo2));
}