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   *  Licensed to the Apache Software Foundation (ASF) under one
   *  or more contributor license agreements.  See the NOTICE file
   *  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.core.metamodel.services.appfeat;
  
  import org.junit.jupiter.api.Test;
  
  import static org.hamcrest.CoreMatchers.is;
  import static org.hamcrest.CoreMatchers.nullValue;
  import static org.hamcrest.MatcherAssert.assertThat;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  import org.apache.causeway.applib.services.appfeat.ApplicationFeatureId;
  import org.apache.causeway.applib.services.appfeat.ApplicationFeatureSort;
  
  class ApplicationFeatureTypeTest {
  
      public static class HideClassName extends ApplicationFeatureTypeTest {
          @Test
          public void all() throws Exception {
              assertThat(ApplicationFeatureSort.NAMESPACE.isNamespace(), is(true));
              assertThat(ApplicationFeatureSort.TYPE.isNamespace(), is(false));
              assertThat(ApplicationFeatureSort.MEMBER.isNamespace(), is(false));
          }
      }
  
      public static class HideMemberName extends ApplicationFeatureTypeTest {
  
          @Test
          public void all() throws Exception {
              assertThat(!ApplicationFeatureSort.NAMESPACE.isMember(), is(true));
              assertThat(!ApplicationFeatureSort.TYPE.isMember(), is(true));
              assertThat(!ApplicationFeatureSort.MEMBER.isMember(), is(false));
          }
      }
  
      public static class Init extends ApplicationFeatureTypeTest {
  
          @Test
          public void givenPackage() throws Exception {
  
              var applicationFeatureId = ApplicationFeatureId.newNamespace("com.mycompany");
  
              assertThat(applicationFeatureId.getNamespace(), is("com.mycompany"));
              assertThat(applicationFeatureId.getTypeSimpleName(), is(nullValue()));
              assertThat(applicationFeatureId.getLogicalMemberName(), is(nullValue()));
  
          }
          @Test
          public void givenClass() throws Exception {
  
              var applicationFeatureId = ApplicationFeatureId.newType("com.mycompany.Bar");
  
              assertThat(applicationFeatureId.getNamespace(), is("com.mycompany"));
              assertThat(applicationFeatureId.getTypeSimpleName(), is("Bar"));
              assertThat(applicationFeatureId.getLogicalMemberName(), is(nullValue()));
  
          }
          @Test
          public void givenMember() throws Exception {
  
              var applicationFeatureId = ApplicationFeatureId.newMember("com.mycompany.Bar#foo");
  
              assertThat(applicationFeatureId.getNamespace(), is("com.mycompany"));
              assertThat(applicationFeatureId.getTypeSimpleName(), is("Bar"));
              assertThat(applicationFeatureId.getLogicalMemberName(), is("foo"));
          }
          @Test
          public void givenMemberMalformed() throws Exception {
              assertThrows(IllegalArgumentException.class, ()->
                  ApplicationFeatureId
                          .newMember("com.mycompany.BarISMISSINGTHEHASHSYMBOL"));
          }
      }
  
      public static class EnsurePackage extends ApplicationFeatureTypeTest {
  
          @Test
          public void whenPackage() throws Exception {
              _Asserts.assertIsNamespace(ApplicationFeatureId.newFeature(ApplicationFeatureSort.NAMESPACE, "xxx"));
          }
          @Test
          public void whenClass() throws Exception {
              assertThrows(IllegalStateException.class, ()->
                  _Asserts.assertIsNamespace(ApplicationFeatureId.newFeature(ApplicationFeatureSort.TYPE, "x.xxx")));
          }
          @Test
          public void whenMember() throws Exception {
              assertThrows(IllegalStateException.class, ()->
                  _Asserts.assertIsNamespace(ApplicationFeatureId.newFeature(ApplicationFeatureSort.MEMBER, "x.xxx#x")));
          }
      }
  
      public static class EnsurePackageOrClass extends ApplicationFeatureTypeTest {
  
          @Test
          public void whenPackage() throws Exception {
              _Asserts.assertIsNamespaceOrType(ApplicationFeatureId.newFeature(ApplicationFeatureSort.NAMESPACE, "xxx"));
          }
          @Test
          public void whenClass() throws Exception {
              _Asserts.assertIsNamespaceOrType(ApplicationFeatureId.newFeature(ApplicationFeatureSort.TYPE, "x.xxx"));
          }
          @Test
          public void whenMember() throws Exception {
              assertThrows(IllegalStateException.class, ()->
                  _Asserts.assertIsNamespaceOrType(ApplicationFeatureId.newFeature(ApplicationFeatureSort.MEMBER, "x.xxx#x")));
          }
  
      }
  
      public static class EnsureClass extends ApplicationFeatureTypeTest {
  
          @Test
          public void whenPackage() throws Exception {
              assertThrows(IllegalStateException.class, ()->
                  _Asserts.assertIsType(ApplicationFeatureId.newFeature(ApplicationFeatureSort.NAMESPACE, "xxx")));
          }
          @Test
          public void whenClass() throws Exception {
              _Asserts.assertIsType(ApplicationFeatureId.newFeature(ApplicationFeatureSort.TYPE, "x.xxx"));
          }
          @Test
          public void whenMember() throws Exception {
              assertThrows(IllegalStateException.class, ()->
                  _Asserts.assertIsType(ApplicationFeatureId.newFeature(ApplicationFeatureSort.MEMBER, "x.xxx#x")));
          }
  
      }
  
      public static class EnsureMember extends ApplicationFeatureTypeTest {
  
          @Test
          public void whenPackage() throws Exception {
              assertThrows(IllegalStateException.class, ()->
                  _Asserts.assertIsMember(ApplicationFeatureId.newFeature(ApplicationFeatureSort.NAMESPACE, "xxx")));
          }
          @Test
          public void whenClass() throws Exception {
              assertThrows(IllegalStateException.class, ()->
                  _Asserts.assertIsMember(ApplicationFeatureId.newFeature(ApplicationFeatureSort.TYPE, "x.xxx")));
          }
          @Test
          public void whenMember() throws Exception {
              _Asserts.assertIsMember(ApplicationFeatureId.newFeature(ApplicationFeatureSort.MEMBER, "x.xxx#x"));
          }
      }
  
      public static class ToString extends ApplicationFeatureTypeTest {
  
          @Test
          public void happyCase() throws Exception {
              assertThat(ApplicationFeatureSort.NAMESPACE.toString(), is("NAMESPACE"));
          }
      }
  
  }