def METHOD_NAME(self):
    with self.assertRaises(ValueError):
        layers.Cropping3D(cropping=(1,))
    with self.assertRaises(ValueError):
        layers.Cropping3D(cropping=(1, 2))
    with self.assertRaises(ValueError):
        layers.Cropping3D(cropping=(1, 2, 3, 4))
    with self.assertRaises(ValueError):
        layers.Cropping3D(cropping="1")
    with self.assertRaises(ValueError):
        layers.Cropping3D(cropping=((1, 2), (3, 4), (5, 6, 7)))
    with self.assertRaises(ValueError):
        layers.Cropping3D(cropping=((1, 2), (3, 4), (5, -6)))
    with self.assertRaises(ValueError):
        layers.Cropping3D(cropping=((1, 2), (3, 4), "5"))