public void ReturnsEmptyStringWhenTheLengthIsZero()
{
var target = new MarshallingService();
var result = target.PtrToUnicodeString(new IntPtr(1), 0);
Assert.AreEqual(string.Empty, result);
}
public void ReturnsNullWhenThePtrIsZero()
{
var target = new MarshallingService();
var result = target.PtrToUnicodeString(IntPtr.Zero, 1);
Assert.IsNull(result);
}
public void MarshalsTheStringFromThePtrAsExpected()
{
var ptr = IntPtr.Zero;
var expected = "Hello";
try
{
ptr = Marshal.StringToHGlobalUni(expected);
var target = new MarshallingService();
var result = target.PtrToUnicodeString(ptr, expected.Length);
Assert.AreEqual(expected, result);
}
finally
{
Marshal.FreeHGlobal(ptr);
}
}
