public void RefCount2Test()
{
NSObject pool = new NSObject(NSObject.AllocAndInitInstance("NSAutoreleasePool"));
// No copy, new, or alloc so ref count is one and it's owned by the pool.
PrettyData direct = PrettyData.makeDefault();
Assert.AreEqual(1L, direct.retainCount());
// Alloc so pool has no ownership stake.
NSObject indirect = (NSObject) new Class("PrettyData").Call("alloc").Call("init");
Assert.AreEqual(1L, indirect.retainCount());
// If we send a message to an object its retain count doesn't change.
int value = (int)direct.Call("get33");
Assert.AreEqual(33, value);
Assert.AreEqual(1L, direct.retainCount());
pool.release();
// Verify our counts after we empty the release pool.
Assert.IsTrue(direct.IsDeallocated());
Assert.AreEqual(1L, indirect.retainCount());
}
public void IVarTest()
{
NSObject instance = (NSObject) new Class("Subclass1").Call("alloc").Call("init");
// ivars start out null
NSObject data = instance["myData"];
Assert.IsTrue(data == null);
// ivars can be set
Class klass = new Class("NSString");
NSObject str = (NSObject)klass.Call("stringWithUTF8String:", Marshal.StringToHGlobalAuto("hello"));
long count = str.retainCount();
instance["myData"] = str;
// the ref count of the value should be incremented when it is
// assigned to an ivar
Assert.AreEqual(count + 1, str.retainCount());
// and we can get the value we set
NSObject result = instance["myData"];
Assert.AreEqual((IntPtr)str, (IntPtr)result);
}
public void RefCount3Test()
{
NSObject pool = new NSObject(NSObject.AllocAndInitInstance("NSAutoreleasePool"));
Class klass = new Class("NSHashTable");
NSObject instance1 = (NSObject)klass.Call("alloc").Call("init");
Assert.AreEqual(1L, instance1.retainCount());
NSObject instance2 = (NSObject) new Class("NSHashTable").Call("alloc").Call("init");
Assert.AreEqual(1L, instance2.retainCount());
pool.release();
Assert.AreEqual(1L, instance1.retainCount());
Assert.AreEqual(1L, instance2.retainCount());
}
public void RefCount1Test()
{
NSObject pool = new NSObject(NSObject.AllocAndInitInstance("NSAutoreleasePool"));
// If we use alloc the object will have a ref count of one.
NSObject instance = (NSObject) new Class("NSHashTable").Call("alloc").Call("init");
Assert.AreEqual(1L, instance.retainCount());
// Classes always have a very high retain count (because they
// are not supposed to go away).
Class nsSignature = new Class("NSMethodSignature");
Assert.IsTrue(nsSignature.retainCount() > 1000);
// If alloc, new, or copy aren't used then the pool owns the object.
Class nsString = new Class("NSString");
NSObject str = (NSObject)nsString.Call("stringWithUTF8String:", Marshal.StringToHGlobalAuto("hello"));
Assert.AreEqual(1L, str.retainCount());
// We can have two managed instances on the same native instance
// and the ref count doesn't change.
NSObject copy = new NSObject((IntPtr)instance);
Assert.AreEqual(1L, copy.retainCount());
// If we send a message to an object its retain count doesn't change.
instance.Call("description");
Assert.AreEqual(1L, instance.retainCount());
pool.release();
// Verify our counts after we empty the release pool.
Assert.AreEqual(1L, instance.retainCount());
Assert.AreEqual(1L, copy.retainCount());
}