/*
    * This file is part of dependency-check-core.
    *
    * 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.
   *
   * Copyright (c) 2015 Institute for Defense Analyses. All Rights Reserved.
   */
  package org.owasp.dependencycheck.analyzer;
  
  import mockit.Mock;
  import mockit.MockUp;
  import org.junit.After;
  import org.junit.Before;
  import org.junit.Test;
  import org.owasp.dependencycheck.BaseDBTestCase;
  import org.owasp.dependencycheck.BaseTest;
  import org.owasp.dependencycheck.Engine;
  import org.owasp.dependencycheck.analyzer.exception.AnalysisException;
  import org.owasp.dependencycheck.data.nvdcve.DatabaseException;
  import org.owasp.dependencycheck.dependency.Dependency;
  import org.owasp.dependencycheck.exception.InitializationException;
  
  import java.io.File;
  import java.security.MessageDigest;
  import java.security.NoSuchAlgorithmException;
  import java.util.List;
  import java.util.regex.Pattern;
  
  import static org.hamcrest.CoreMatchers.equalTo;
  import static org.hamcrest.CoreMatchers.is;
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertThat;
  import static org.junit.Assert.assertTrue;
  
  /**
   * Unit tests for CmakeAnalyzer.
   *
   * @author Dale Visser
   */
  public class CMakeAnalyzerTest extends BaseDBTestCase {
  
      /**
       * The package analyzer to test.
       */
      CMakeAnalyzer analyzer;
  
      /**
       * Setup the CmakeAnalyzer.
       *
       * @throws Exception if there is a problem
       */
      @Override
      @Before
      public void setUp() throws Exception {
          super.setUp();
          analyzer = new CMakeAnalyzer();
          analyzer.setFilesMatched(true);
          analyzer.initialize();
      }
  
      /**
       * Cleanup any resources used.
       *
       * @throws Exception if there is a problem
       */
      @After
      public void tearDown() throws Exception {
          analyzer.close();
          analyzer = null;
      }
  
      /**
       * Test of getName method, of class PythonPackageAnalyzer.
       */
      @Test
      public void testGetName() {
          assertThat(analyzer.getName(), is(equalTo("CMake Analyzer")));
      }
  
      /**
       * Test of supportsExtension method, of class PythonPackageAnalyzer.
       */
      @Test
      public void testAccept() {
          assertTrue("Should support \"CMakeLists.txt\" name.",
                  analyzer.accept(new File("CMakeLists.txt")));
          assertTrue("Should support \"cmake\" extension.",
                  analyzer.accept(new File("test.cmake")));
     }
 
     /**
      * Test whether expected evidence is gathered from OpenCV's CMakeLists.txt.
      *
      * @throws AnalysisException is thrown when an exception occurs.
      */
     @Test
     public void testAnalyzeCMakeListsOpenCV() throws AnalysisException {
         final Dependency result = new Dependency(BaseTest.getResourceAsFile(
                 this, "cmake/opencv/CMakeLists.txt"));
         analyzer.analyze(result, null);
         final String product = "OpenCV";
         assertProductEvidence(result, product);
     }
 
     /**
      * Test whether expected evidence is gathered from OpenCV's CMakeLists.txt.
      *
      * @throws AnalysisException is thrown when an exception occurs.
      */
     @Test
     public void testAnalyzeCMakeListsZlib() throws AnalysisException {
         final Dependency result = new Dependency(BaseTest.getResourceAsFile(
                 this, "cmake/zlib/CMakeLists.txt"));
         analyzer.analyze(result, null);
         final String product = "zlib";
         assertProductEvidence(result, product);
     }
 
     private void assertProductEvidence(Dependency result, String product) {
         assertTrue("Expected product evidence to contain \"" + product + "\".",
                 result.getProductEvidence().toString().contains(product));
     }
 
     /**
      * Test whether expected version evidence is gathered from OpenCV's third party cmake files.
      *
      * @throws AnalysisException is thrown when an exception occurs.
      */
     @Test
     public void testAnalyzeCMakeListsOpenCV3rdParty() throws AnalysisException, DatabaseException {
         final Dependency result = new Dependency(BaseTest.getResourceAsFile(
                 this, "cmake/opencv/3rdparty/ffmpeg/ffmpeg_version.cmake"));
         final Engine engine = new Engine();
         analyzer.analyze(result, engine);
         assertProductEvidence(result, "libavcodec");
         assertVersionEvidence(result, "55.18.102");
         assertFalse("ALIASOF_ prefix shouldn't be present.",
                 Pattern.compile("\\bALIASOF_\\w+").matcher(result.getProductEvidence().toString()).find());
         final List<Dependency> dependencies = engine.getDependencies();
         assertEquals("Number of additional dependencies should be 4.", 4, dependencies.size());
         final Dependency last = dependencies.get(3);
         assertProductEvidence(last, "libavresample");
         assertVersionEvidence(last, "1.0.1");
     }
 
     private void assertVersionEvidence(Dependency result, String version) {
         assertTrue("Expected version evidence to contain \"" + version + "\".",
                 result.getVersionEvidence().toString().contains(version));
     }
 
     @Test(expected = InitializationException.class)
     public void analyzerIsDisabledInCaseOfMissingMessageDigest() throws InitializationException {
         new MockUp<MessageDigest>() {
             @Mock
             MessageDigest getInstance(String ignore) throws NoSuchAlgorithmException {
                 throw new NoSuchAlgorithmException();
             }
         };
 
         analyzer = new CMakeAnalyzer();
         analyzer.setFilesMatched(true);
         assertTrue(analyzer.isEnabled());
         analyzer.initialize();
 
         assertFalse(analyzer.isEnabled());
     }
 }