@Test
public void thatCanApplyGreenEffect() {

    assertThat(HaloCloudinary.Effects.green(10).toString().equals("e_green:10")).isTrue();
    assertThat(HaloCloudinary.Effects.green(null).toString().equals("e_green")).isTrue();
    assertThat(HaloCloudinary.Effects.green(-1000).toString().equals("e_green")).isTrue();
}