@Test
 public void should_fail_if_actual_contains_given_values() {
   AssertionInfo info = someInfo();
   byte[] expected = {6, 8, 20};
   try {
     arrays.assertDoesNotContain(info, actual, expected);
   } catch (AssertionError e) {
     verify(failures).failure(info, shouldNotContain(actual, expected, set((byte) 6, (byte) 8)));
     return;
   }
   throw expectedAssertionErrorNotThrown();
 }
 @Test
 public void should_fail_if_actual_is_null() {
   thrown.expectAssertionError(actualIsNull());
   arrays.assertDoesNotContain(someInfo(), null, array(8));
 }
 @Test
 public void should_throw_error_if_array_of_values_to_look_for_is_empty() {
   thrown.expectIllegalArgumentException(valuesToLookForIsEmpty());
   arrays.assertDoesNotContain(someInfo(), actual, emptyArray());
 }
 @Test
 public void should_throw_error_if_array_of_values_to_look_for_is_null() {
   thrown.expectNullPointerException(valuesToLookForIsNull());
   arrays.assertDoesNotContain(someInfo(), actual, null);
 }
 @Test
 public void should_pass_if_actual_does_not_contain_given_values_even_if_duplicated() {
   arrays.assertDoesNotContain(someInfo(), actual, array(12, 12, 20));
 }