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.tools.ant.taskdefs.optional.junit;
  
  import java.io.File;
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.Enumeration;
  import java.util.Vector;
  import java.util.stream.Stream;
  
  import org.apache.tools.ant.Project;
  import org.apache.tools.ant.types.FileSet;
  import org.apache.tools.ant.types.Resource;
  import org.apache.tools.ant.types.ResourceCollection;
  import org.apache.tools.ant.types.resources.Resources;
  
  /**
   * <p>Create then run <code>JUnitTest</code>'s based on the list of files
   * given by the fileset attribute.</p>
   *
   * <p>Every <code>.java</code> or <code>.class</code> file in the fileset is
   * assumed to be a testcase.
   * A <code>JUnitTest</code> is created for each of these named classes with
   * basic setup inherited from the parent <code>BatchTest</code>.</p>
   *
   * @see JUnitTest
   */
  public final class BatchTest extends BaseTest {
  
      /** the reference to the project */
      private Project project;
  
      /** the list of filesets containing the testcase filename rules */
      private Resources resources = new Resources();
  
      /**
       * create a new batchtest instance
       * @param project     the project it depends on.
       */
      public BatchTest(Project project) {
          this.project = project;
          resources.setCache(true);
      }
  
      /**
       * Add a new fileset instance to this batchtest. Whatever the fileset is,
       * only filename that are <code>.java</code> or <code>.class</code> will be
       * considered as 'candidates'.
       * @param     fs the new fileset containing the rules to get the testcases.
       */
      public void addFileSet(FileSet fs) {
          add(fs);
  
          // this one is here because the changes to support ResourceCollections
          // have broken Magic's JUnitTestTask.
          //
          // The task adds a FileSet to a BatchTest instance using the
          // Java API and without telling the FileSet about its project
          // instance.  The original code would pass in project on the
          // call to getDirectoryScanner - which is now hidden deep into
          // Resources.iterator() and not reachable.
          if (fs.getProject() == null) {
              fs.setProject(project);
          }
      }
  
      /**
       * Add a new ResourceCollection instance to this
       * batchtest. Whatever the collection is, only names that are
       * <code>.java</code> or <code>.class</code> will be considered as
       * 'candidates'.
       * @param rc the new ResourceCollection containing the rules to
       * get the testcases.
       * @since Ant 1.7
       */
      public void add(ResourceCollection rc) {
          resources.add(rc);
      }
  
      /**
       * Return all <code>JUnitTest</code> instances obtain by applying the fileset rules.
       * @return  an enumeration of all elements of this batchtest that are
       * a <code>JUnitTest</code> instance.
       */
      public Enumeration<JUnitTest> elements() {
          return Collections.enumeration(Arrays.asList(createAllJUnitTest()));
      }
  
      /**
       * Convenient method to merge the <code>JUnitTest</code>s of this batchtest
       * to a <code>Vector</code>.
       * @param v the vector to which should be added all individual tests of this
       * batch test.
       */
      void addTestsTo(Vector<? super JUnitTest> v) {
          JUnitTest[] tests = createAllJUnitTest();
          v.ensureCapacity(v.size() + tests.length);
          for (JUnitTest test : tests) {
              v.addElement(test);
          }
      }
  
      /**
       * Create all <code>JUnitTest</code>s based on the filesets. Each instance
       * is configured to match this instance properties.
       * @return the array of all <code>JUnitTest</code>s that belongs to this batch.
       */
      private JUnitTest[] createAllJUnitTest() {
          return Stream.of(getFilenames()).map(BatchTest::javaToClass)
              .map(this::createJUnitTest).toArray(JUnitTest[]::new);
      }
  
      /**
       * Iterate over all filesets and return the filename of all files
       * that end with <code>.java</code> or <code>.class</code>. This is to avoid
       * wrapping a <code>JUnitTest</code> over an xml file for example. A Testcase
       * is obviously a java file (compiled or not).
       * @return an array of filenames without their extension. As they should
       * normally be taken from their root, filenames should match their fully
       * qualified class name (If it is not the case it will fail when running the test).
       * For the class <code>org/apache/Whatever.class</code> it will return <code>org/apache/Whatever</code>.
       */
      private String[] getFilenames() {
          return resources.stream().filter(Resource::isExists)
              .map(Resource::getName)
              .filter(name -> name.endsWith(".java") || name.endsWith(".class"))
              .map(name -> name.substring(0, name.lastIndexOf('.')))
              .toArray(String[]::new);
      }
  
      /**
       * Convenient method to convert a pathname without extension to a
       * fully qualified classname. For example <code>org/apache/Whatever</code> will
       * be converted to <code>org.apache.Whatever</code>
       * @param filename the filename to "convert" to a classname.
       * @return the classname matching the filename.
       */
      public static String javaToClass(String filename) {
          return filename.replace(File.separatorChar, '.').replace('/', '.')
              .replace('\\', '.');
      }
  
      /**
       * Create a <code>JUnitTest</code> that has the same property as this
       * <code>BatchTest</code> instance.
       * @param classname the name of the class that should be run as a
       * <code>JUnitTest</code>. It must be a fully qualified name.
       * @return the <code>JUnitTest</code> over the given classname.
       */
      private JUnitTest createJUnitTest(String classname) {
          JUnitTest test = new JUnitTest();
          test.setName(classname);
          test.setHaltonerror(this.haltOnError);
          test.setHaltonfailure(this.haltOnFail);
          test.setFiltertrace(this.filtertrace);
          test.setFork(this.fork);
          test.setIf(getIfCondition());
          test.setUnless(getUnlessCondition());
          test.setTodir(this.destDir);
          test.setFailureProperty(failureProperty);
          test.setErrorProperty(errorProperty);
          test.setSkipNonTests(isSkipNonTests());
          this.formatters.forEach(test::addFormatter);
          return test;
      }
  
  }
  