public void Create()
{
using (var x = new FakeNativeObject((IntPtr)1, false)) {
Assert.That(x.RetainCount, Is.EqualTo(1), "x.RetainCount");
}
using (var y = new FakeNativeObject((IntPtr)2, true)) {
Assert.That(y.RetainCount, Is.EqualTo(0), "y.RetainCount");
}
}
public void Dispose()
{
var x = new FakeNativeObject((IntPtr)1, false);
Assert.That(x.RetainCount, Is.EqualTo(1), "1");
x.Dispose();
Assert.That(x.RetainCount, Is.EqualTo(0), "0");
Assert.Throws <ObjectDisposedException> (() => x.GetCheckedHandle(), "Dispose");
// Dispose should be safe to call multiple times
x.Dispose();
}
public void Equals()
{
// overriden Equals with weird behavior to confirm it can't be anything else
using (var x = new FakeNativeObject((IntPtr)42, true)) {
Assert.False(x.Equals(x), "self");
Assert.True(x.Equals(null), "null");
}
#if NET
// check that equality is based on handle only (and not System.Object.Equals)
using (var n1 = new NativeObjectPoker((IntPtr)42))
using (var n2 = new NativeObjectPoker((IntPtr)42))
Assert.True(n1.Equals(n2), "1");
#endif
}
public void GetHashCodeValue()
{
// check that overriding GetHashCode is fine
using (var n = new FakeNativeObject((IntPtr)42, true)) {
Assert.That(n.GetHashCode, Is.EqualTo(0), "GetHashCode");
}
#if NET
// check that only the handle is used to compute the hash code of the selector
// which means DisposableObject base implementation (not System.Object) is used
using (var n = new NativeObjectPoker((IntPtr)42)) {
Assert.AreNotEqual(n.GetHashCode(), RuntimeHelpers.GetHashCode(n), "GetHashCode-old");
Assert.AreEqual(n.GetHashCode(), n.Handle.GetHashCode(), "GetHashCode-net");
}
#endif
}