@Test
public void containsWorksAsExpected() {

    underTest =
            Permissions.newInstance(TestConstants.Policy.PERMISSION_READ, TestConstants.Policy.PERMISSION_WRITE);
    assertThat(underTest.contains(TestConstants.Policy.PERMISSION_READ)).isTrue();
    assertThat(underTest.contains(TestConstants.Policy.PERMISSION_WRITE)).isTrue();
    assertThat(underTest.contains(TestConstants.Policy.PERMISSION_READ,
            TestConstants.Policy.PERMISSION_WRITE)).isTrue();
    underTest =
            Permissions.newInstance(TestConstants.Policy.PERMISSION_READ, TestConstants.Policy.PERMISSION_WRITE);
    assertThat(underTest.contains(TestConstants.Policy.PERMISSION_READ)).isTrue();
}