content: /*
   * Copyright 2017-2025 Hyland Software, Inc. and its affiliates.
   *
   * Licensed 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.activiti.cloud.security.feign;
  
  import static org.assertj.core.api.Assertions.assertThat;
  import static org.mockito.ArgumentMatchers.any;
  import static org.mockito.Mockito.when;
  
  import feign.RequestTemplate;
  import java.util.List;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.extension.ExtendWith;
  import org.mockito.InjectMocks;
  import org.mockito.Mock;
  import org.mockito.junit.jupiter.MockitoExtension;
  import org.springframework.security.oauth2.client.OAuth2AuthorizedClient;
  import org.springframework.security.oauth2.client.OAuth2AuthorizedClientManager;
  import org.springframework.security.oauth2.client.registration.ClientRegistration;
  import org.springframework.security.oauth2.core.AuthorizationGrantType;
  import org.springframework.security.oauth2.core.OAuth2AccessToken;
  
  @ExtendWith(MockitoExtension.class)
  class ClientCredentialsAuthRequestInterceptorTest {
  
      @Mock
      private OAuth2AuthorizedClientManager authorizedClientManager;
  
      @Mock
      private ClientRegistration clientRegistration;
  
      @Mock
      private OAuth2AuthorizedClient authorizedClient;
  
      @Mock
      private OAuth2AccessToken accessToken;
  
      @InjectMocks
      private ClientCredentialsAuthRequestInterceptor clientCredentialsAuthRequestInterceptor;
  
      @Test
      public void shouldSetAuthorizationHeader_whenClientCredentials() {
          when(clientRegistration.getRegistrationId()).thenReturn("keycloak");
          when(authorizedClientManager.authorize(any())).thenReturn(authorizedClient);
          when(authorizedClient.getAccessToken()).thenReturn(accessToken);
          when(accessToken.getTokenValue()).thenReturn("123");
  
          RequestTemplate requestTemplate = new RequestTemplate();
          clientCredentialsAuthRequestInterceptor.apply(requestTemplate);
          assertThat(requestTemplate.headers()).containsEntry("Authorization", List.of("Bearer 123"));
      }
  
      @Test
      public void shouldSetOnlyOneAuthorizationHeader_whenClientCredentials() {
          when(clientRegistration.getRegistrationId()).thenReturn("keycloak");
          when(authorizedClientManager.authorize(any())).thenReturn(authorizedClient);
          when(authorizedClient.getAccessToken()).thenReturn(accessToken);
          when(accessToken.getTokenValue()).thenReturn("123");
  
          RequestTemplate requestTemplate = new RequestTemplate();
          requestTemplate.header("Authorization", "Bearer 456");
  
          clientCredentialsAuthRequestInterceptor.apply(requestTemplate);
          assertThat(requestTemplate.headers()).hasSize(1);
          assertThat(requestTemplate.headers()).containsEntry("Authorization", List.of("Bearer 123"));
      }
  }
  