public void ReturnsNullWhenTheSizeIsZero()
{
var target = new MarshallingService();
var result = target.AllocHGlobal(0);
Assert.AreEqual(IntPtr.Zero, result);
}
public void AllocateThePointerSpecified()
{
var result = IntPtr.Zero;
try
{
var target = new MarshallingService();
result = target.AllocHGlobal(4);
Assert.AreNotEqual(IntPtr.Zero, result);
}
finally
{
if (result != IntPtr.Zero)
{
Marshal.FreeHGlobal(result);
}
}
}
public void ThrowsAnExceptionWhenTheSizeIsLessThanZero()
{
var target = new MarshallingService();
Assert.Throws <ArgumentException>(() => target.AllocHGlobal(0));
}
