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   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you under the Apache License, Version 2.0 (the
   *  "License"); you may not use this file except in compliance
   *  with the License.  You may obtain a copy of the License at
   *
   *        http://www.apache.org/licenses/LICENSE-2.0
   *
   *  Unless required by applicable law or agreed to in writing,
   *  software distributed under the License is distributed on an
   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   *  KIND, either express or implied.  See the License for the
   *  specific language governing permissions and limitations
   *  under the License.
   */
  package org.apache.causeway.applib.services.eventbus;
  
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import org.apache.causeway.applib.events.domain.AbstractDomainEvent;
  import org.apache.causeway.applib.services.i18n.TranslatableString;
  
  class AbstractDomainEvent_veto_Test {
  
      AbstractDomainEvent<?> ev = new AbstractDomainEvent<Object>() {  };
  
      @Test
      public void hidden_phase_and_veto_using_null() throws Exception {
  
          // given
          ev.setEventPhase(AbstractDomainEvent.Phase.HIDE);
  
          // when
          ev.veto((String)null);
  
          // then ... vetoes
          assertTrue(ev.isHidden());
          assertFalse(ev.isDisabled());
          assertNull(ev.getDisabledReason());
          assertFalse(ev.isInvalid());
          assertNull(ev.getInvalidityReason());
      }
  
      @Test
      public void hidden_phase_and_veto_using_non_null_string() throws Exception {
          // given
          ev.setEventPhase(AbstractDomainEvent.Phase.HIDE);
  
          // when
          ev.veto("hidden");
  
          // then ... vetoes
          assertTrue(ev.isHidden());
          assertFalse(ev.isDisabled());
          assertNull(ev.getDisabledReason());
          assertFalse(ev.isInvalid());
          assertNull(ev.getInvalidityReason());
      }
  
      @Test
      public void hidden_phase_and_veto_using_translatable() throws Exception {
          // given
          ev.setEventPhase(AbstractDomainEvent.Phase.HIDE);
  
          // when
          final TranslatableString reason = TranslatableString.tr("hidden");
          ev.veto(reason);
  
          // then ... vetoes
          assertTrue(ev.isHidden());
          assertFalse(ev.isDisabled());
          assertNull(ev.getDisabledReason());
          assertFalse(ev.isInvalid());
          assertNull(ev.getInvalidityReason());
      }
  
      @Test
      public void disable_phase_and_attempt_to_veto_with_null() throws Exception {
  
          // given
          final AbstractDomainEvent<?> ev = new AbstractDomainEvent<Object>() {  };
          ev.setEventPhase(AbstractDomainEvent.Phase.DISABLE);
  
          // when
          assertThrows(IllegalArgumentException.class, ()->
              ev.veto((String)null));
      }
  
      @Test
      public void disable_phase_and_veto_using_non_null_string() throws Exception {
          // given
          ev.setEventPhase(AbstractDomainEvent.Phase.DISABLE);
  
          // when
          final String reason = "no, you can't do that";
          ev.veto(reason);
  
          // then
          assertFalse(ev.isHidden());
          assertTrue(ev.isDisabled());
          assertEquals(reason, ev.getDisabledReason());
          assertFalse(ev.isInvalid());
          assertNull(ev.getInvalidityReason());
      }
  
      @Test
      public void disable_phase_and_veto_using_translatable() throws Exception {
          // given
          ev.setEventPhase(AbstractDomainEvent.Phase.DISABLE);
  
          // when
          final TranslatableString reason = TranslatableString.tr("no, you can't do that");
          ev.veto(reason);
  
          // then
          assertFalse(ev.isHidden());
          assertTrue(ev.isDisabled());
          assertEquals(reason, ev.getDisabledReasonTranslatable());
          assertFalse(ev.isInvalid());
          assertNull(ev.getInvalidityReason());
      }
  
      @Test
      public void validate_phase_and_attempt_to_veto_with_null() throws Exception {
  
          // given
          ev.setEventPhase(AbstractDomainEvent.Phase.VALIDATE);
  
          // when
          assertThrows(IllegalArgumentException.class, ()->
              ev.veto((String)null));
      }
  
      @Test
      public void validate_phase_and_veto_using_non_null_string() throws Exception {
  
          // given
          ev.setEventPhase(AbstractDomainEvent.Phase.VALIDATE);
  
          // when
          final String reason = "no, you can't do that";
          ev.veto(reason);
  
          // then
          assertFalse(ev.isHidden());
          assertFalse(ev.isDisabled());
          assertNull(ev.getDisabledReason());
          assertTrue(ev.isInvalid());
          assertEquals(reason, ev.getInvalidityReason());
      }
  
      @Test
      public void validate_phase_and_veto_using_translatable() throws Exception {
  
          // given
          ev.setEventPhase(AbstractDomainEvent.Phase.VALIDATE);
  
          // when
          final TranslatableString reason = TranslatableString.tr("no, you can't do that");
          ev.veto(reason);
  
          // then
          assertFalse(ev.isHidden());
          assertFalse(ev.isDisabled());
          assertNull(ev.getDisabledReason());
          assertTrue(ev.isInvalid());
          assertEquals(reason, ev.getInvalidityReasonTranslatable());
      }
  
  }