content: /*
   *
   * 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 com.alibaba.cloudapp.api.gateway.authentication;
  
  import org.junit.Before;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.mockito.Mock;
  import org.mockito.MockitoAnnotations;
  import org.mockito.junit.MockitoJUnitRunner;
  import org.springframework.http.HttpHeaders;
  import org.springframework.http.HttpRequest;
  
  import java.util.UUID;
  import java.util.function.Function;
  
  import static org.mockito.Mockito.*;
  
  @RunWith(MockitoJUnitRunner.class)
  public class CustomAuthorizerTest {
  
      private static final String TOKEN = UUID.randomUUID().toString();
      private static final String AUTHORIZATION = "Authorization";
  
      @Mock
      private HttpRequest request;
      @Mock
      private HttpHeaders headers;
  
      @Mock
      private Function<HttpRequest, String> generate;
  
      private CustomAuthorizer customAuthorizer;
  
  
      @Before
      public void setUp() {
          MockitoAnnotations.initMocks(this);
          when(request.getHeaders()).thenReturn(headers);
          when(generate.apply(any(HttpRequest.class))).thenReturn(TOKEN);
      }
  
      @Test
      public void applyAuthorization_ShouldAddBearerToken_WhenGenerateReturnsToken() {
          customAuthorizer = new CustomAuthorizer(generate);
  
          customAuthorizer.applyAuthorization(request);
  
          verify(request).getHeaders();
          verify(request.getHeaders()).add(AUTHORIZATION, TOKEN);
      }
  
      @Test
      public void applyAuthorization_ShouldAddCustomHeader_WhenGenerateReturnsToken() {
          String customHeader = "Custom-Header";
          customAuthorizer = new CustomAuthorizer(generate, customHeader);
  
          customAuthorizer.applyAuthorization(request);
  
          verify(request).getHeaders();
          verify(request.getHeaders()).add(customHeader, TOKEN);
      }
  
      @Test
      public void applyAuthorization_ShouldHandleEmptyToken() {
          customAuthorizer = new CustomAuthorizer(generate);
  
          when(generate.apply(any(HttpRequest.class))).thenReturn("");
  
          customAuthorizer.applyAuthorization(request);
  
          verify(request).getHeaders();
          verify(request.getHeaders()).add(AUTHORIZATION, "");
      }
  
      @Test
      public void applyAuthorization_ShouldHandleNullToken() {
          customAuthorizer = new CustomAuthorizer(generate);
  
          when(generate.apply(any(HttpRequest.class))).thenReturn(null);
  
          customAuthorizer.applyAuthorization(request);
  
          verify(request).getHeaders();
          verify(request.getHeaders()).add(AUTHORIZATION, null);
      }
  }
  