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
   *
   *    https://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.bigtop.manager.server.config;
  
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.extension.ExtendWith;
  import org.mockito.junit.jupiter.MockitoExtension;
  import org.springframework.http.HttpStatus;
  import org.springframework.web.servlet.ModelAndView;
  
  import jakarta.servlet.RequestDispatcher;
  import jakarta.servlet.http.HttpServletRequest;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.when;
  
  @ExtendWith(MockitoExtension.class)
  class FrontendRedirectorTest {
  
      @Test
      void handleError_ReturnsForwardToIndexHtmlForNotFound() {
          HttpServletRequest request = mock(HttpServletRequest.class);
          when(request.getAttribute(RequestDispatcher.ERROR_STATUS_CODE)).thenReturn(HttpStatus.NOT_FOUND.value());
  
          ModelAndView modelAndView = new FrontendRedirector().handleError(request);
  
          assertEquals(HttpStatus.OK, modelAndView.getStatus());
          assertEquals("forward:/ui/index.html", modelAndView.getViewName());
      }
  
      @Test
      void handleError_ReturnsModelAndViewWithStatusCode() {
          HttpServletRequest request = mock(HttpServletRequest.class);
          when(request.getAttribute(RequestDispatcher.ERROR_STATUS_CODE))
                  .thenReturn(HttpStatus.INTERNAL_SERVER_ERROR.value());
  
          ModelAndView modelAndView = new FrontendRedirector().handleError(request);
  
          assertEquals(HttpStatus.INTERNAL_SERVER_ERROR, modelAndView.getStatus());
          assertNull(modelAndView.getViewName());
      }
  
      @Test
      void handleError_ReturnsModelAndViewWithNullStatus() {
          HttpServletRequest request = mock(HttpServletRequest.class);
          when(request.getAttribute(RequestDispatcher.ERROR_STATUS_CODE)).thenReturn(null);
  
          ModelAndView modelAndView = new FrontendRedirector().handleError(request);
  
          assertNull(modelAndView.getStatus());
          assertNull(modelAndView.getViewName());
      }
  }
  