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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.viewer.wicket.viewer.integration;
  
  import java.util.Locale;
  import java.util.Optional;
  
  import static java.util.Collections.emptyList;
  import static java.util.Collections.singletonList;
  
  import org.apache.wicket.request.Request;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.mockito.Mockito;
  
  import static org.hamcrest.MatcherAssert.assertThat;
  import static org.hamcrest.Matchers.is;
  
  import org.apache.causeway.applib.services.iactnlayer.InteractionService;
  import org.apache.causeway.applib.services.registry.ServiceRegistry;
  import org.apache.causeway.core.metamodel._testing.MetaModelContext_forTesting;
  import org.apache.causeway.core.metamodel.context.MetaModelContext;
  import org.apache.causeway.core.security._testing.InteractionService_forTesting;
  import org.apache.causeway.core.security.authentication.AuthenticationRequest;
  import org.apache.causeway.core.security.authentication.AuthenticationRequestPassword;
  import org.apache.causeway.core.security.authentication.Authenticator;
  import org.apache.causeway.core.security.authentication.InteractionContextFactory;
  import org.apache.causeway.core.security.authentication.manager.AuthenticationManager;
  import org.apache.causeway.core.security.authentication.standard.RandomCodeGeneratorDefault;
  
  class AuthenticatedWebSessionForCauseway_SignIn {
  
      private AuthenticationManager authMgr;
  
      protected Request mockRequest = Mockito.mock(Request.class);
      protected Authenticator mockAuthenticator = Mockito.mock(Authenticator.class);
      protected InteractionService mockInteractionService = Mockito.mock(InteractionService.class);
      protected ServiceRegistry mockServiceRegistry = Mockito.mock(ServiceRegistry.class);
  
      protected AuthenticatedWebSessionForCauseway webSession;
      private MetaModelContext mmc;
  
      @BeforeEach
      void setUp() throws Exception {
          mmc = MetaModelContext_forTesting.builder()
                  .singleton(mockInteractionService)
                  .build();
  
          authMgr = new AuthenticationManager(
                  singletonList(mockAuthenticator),
                  new InteractionService_forTesting(),
                  new RandomCodeGeneratorDefault(),
                  Optional.empty(),
                  emptyList());
      }
  
      @Test
      void signInJustDelegatesToAuthenticateAndSavesState() {
  
          Mockito
          // must provide explicit expectation, since Locale is final.
          .when(mockRequest.getLocale())
          .thenReturn(Locale.getDefault());
  
          Mockito
          .when(mockAuthenticator.canAuthenticate(AuthenticationRequestPassword.class))
          .thenReturn(true);
  
          Mockito
          .when(mockAuthenticator.authenticate(
                  Mockito.any(AuthenticationRequest.class),
                  Mockito.any(String.class)))
          .thenReturn(InteractionContextFactory.testing());
  
          webSession = new AuthenticatedWebSessionForCauseway(mockRequest) {
              private static final long serialVersionUID = 1L;
  
              @Override
              public AuthenticationManager getAuthenticationManager() {
                  return authMgr;
              }
  
              @Override
              public MetaModelContext getMetaModelContext() {
                  return mmc;
              }
          };
  
          // when
          webSession.signIn("john", "secret");
  
          // then
          assertThat(webSession.isSignedIn(), is(true));
      }
  }
  