public void isBMP() { string file = "test.bmp"; Assert.IsFalse(SdlImage.IMG_isBMP(Sdl.SDL_RWFromFile(file, "rb")) == IntPtr.Zero); Assert.AreEqual(SdlImage.IMG_isBMP(Sdl.SDL_RWFromFile("test.jpg", "rb")), IntPtr.Zero); this.Quit(); }