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 org.apache.ambari.server.api.services.stackadvisor;
  
  import static org.easymock.EasyMock.expect;
  import static org.junit.Assert.fail;
  import static org.powermock.api.easymock.PowerMock.createNiceMock;
  import static org.powermock.api.easymock.PowerMock.replay;
  import static org.powermock.api.support.membermodification.MemberModifier.stub;
  
  import java.io.File;
  import java.io.IOException;
  import java.util.HashMap;
  
  import org.apache.ambari.server.api.services.stackadvisor.commands.StackAdvisorCommandType;
  import org.apache.ambari.server.configuration.Configuration;
  import org.apache.ambari.server.state.ServiceInfo;
  import org.junit.After;
  import org.junit.Before;
  import org.junit.Test;
  import org.junit.rules.TemporaryFolder;
  import org.junit.runner.RunWith;
  import org.powermock.api.easymock.PowerMock;
  import org.powermock.core.classloader.annotations.PrepareForTest;
  import org.powermock.modules.junit4.PowerMockRunner;
  
  /**
   * StackAdvisorRunner unit tests.
   */
  @RunWith(PowerMockRunner.class)
  @PrepareForTest(StackAdvisorRunner.class)
  public class StackAdvisorRunnerTest {
  
    private TemporaryFolder temp = new TemporaryFolder();
  
    @Before
    public void setUp() throws IOException {
      temp.create();
    }
  
    @After
    public void tearDown() throws IOException {
      temp.delete();
    }
  
    @Test(expected = StackAdvisorException.class)
    public void testRunScript_processStartThrowsException_returnFalse() throws Exception {
      StackAdvisorCommandType saCommandType = StackAdvisorCommandType.RECOMMEND_COMPONENT_LAYOUT;
      File actionDirectory = temp.newFolder("actionDir");
      ProcessBuilder processBuilder = createNiceMock(ProcessBuilder.class);
      StackAdvisorRunner saRunner = new StackAdvisorRunner();
      Configuration configuration = new Configuration();
      configuration.setProperty(Configuration.METADATA_DIR_PATH, "");
      saRunner.setConfigs(configuration);
      stub(PowerMock.method(StackAdvisorRunner.class, "prepareShellCommand"))
          .toReturn(processBuilder);
      expect(processBuilder.environment()).andReturn(new HashMap<>()).times(3);
      expect(processBuilder.start()).andThrow(new IOException());
      replay(processBuilder);
      saRunner.runScript(ServiceInfo.ServiceAdvisorType.PYTHON, saCommandType, actionDirectory);
    }
  
    @Test(expected = StackAdvisorRequestException.class)
    public void testRunScript_processExitCode1_returnFalse() throws Exception {
      StackAdvisorCommandType saCommandType = StackAdvisorCommandType.RECOMMEND_COMPONENT_LAYOUT;
      File actionDirectory = temp.newFolder("actionDir");
      ProcessBuilder processBuilder = createNiceMock(ProcessBuilder.class);
      Process process = createNiceMock(Process.class);
      Configuration configuration = new Configuration();
      configuration.setProperty(Configuration.METADATA_DIR_PATH, "");
      StackAdvisorRunner saRunner = new StackAdvisorRunner();
      saRunner.setConfigs(configuration);
      stub(PowerMock.method(StackAdvisorRunner.class, "prepareShellCommand"))
          .toReturn(processBuilder);
      expect(processBuilder.environment()).andReturn(new HashMap<>()).times(3);
      expect(processBuilder.start()).andReturn(process);
      expect(process.waitFor()).andReturn(1);
      replay(processBuilder, process);
      saRunner.runScript(ServiceInfo.ServiceAdvisorType.PYTHON, saCommandType, actionDirectory);
    }
  
    @Test(expected = StackAdvisorException.class)
    public void testRunScript_processExitCode2_returnFalse() throws Exception {
      StackAdvisorCommandType saCommandType = StackAdvisorCommandType.RECOMMEND_COMPONENT_LAYOUT;
      File actionDirectory = temp.newFolder("actionDir");
      ProcessBuilder processBuilder = createNiceMock(ProcessBuilder.class);
      Process process = createNiceMock(Process.class);
      StackAdvisorRunner saRunner = new StackAdvisorRunner();
      Configuration configuration = new Configuration();
      configuration.setProperty(Configuration.METADATA_DIR_PATH, "");
      saRunner.setConfigs(configuration);
  
      stub(PowerMock.method(StackAdvisorRunner.class, "prepareShellCommand"))
          .toReturn(processBuilder);
      expect(processBuilder.environment()).andReturn(new HashMap<>()).times(3);
      expect(processBuilder.start()).andReturn(process);
      expect(process.waitFor()).andReturn(2);
      replay(processBuilder, process);
      saRunner.runScript(ServiceInfo.ServiceAdvisorType.PYTHON, saCommandType, actionDirectory);
    }
  
    @Test
    public void testRunScript_processExitCodeZero_returnTrue() throws Exception {
      StackAdvisorCommandType saCommandType = StackAdvisorCommandType.RECOMMEND_COMPONENT_LAYOUT;
      File actionDirectory = temp.newFolder("actionDir");
      ProcessBuilder processBuilder = createNiceMock(ProcessBuilder.class);
      Process process = createNiceMock(Process.class);
      StackAdvisorRunner saRunner = new StackAdvisorRunner();
      Configuration configuration = new Configuration();
      configuration.setProperty(Configuration.METADATA_DIR_PATH, "");
      saRunner.setConfigs(configuration);
  
      stub(PowerMock.method(StackAdvisorRunner.class, "prepareShellCommand"))
          .toReturn(processBuilder);
      expect(processBuilder.environment()).andReturn(new HashMap<>()).times(3);
      expect(processBuilder.start()).andReturn(process);
      expect(process.waitFor()).andReturn(0);
      replay(processBuilder, process);
      try {
        saRunner.runScript(ServiceInfo.ServiceAdvisorType.PYTHON, saCommandType, actionDirectory);
      } catch (StackAdvisorException ex) {
        fail("Should not fail with StackAdvisorException");
      }
    }
  }
  