/**
    * 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.commons.cli2.jdepend;
  
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.Iterator;
  
  import jdepend.framework.JDepend;
  import jdepend.framework.JavaPackage;
  import junit.framework.TestCase;
  
  /**
   * @author Rob Oxspring
   */
  public class JDependTest extends TestCase {
  
      private JDepend dependancies = null;
  
      public void setUp() throws IOException {
          dependancies = new JDepend();
          dependancies.addDirectory("target/classes");
          dependancies.analyze();
      }
  
      public void testJUnitNotPresent() {
          // if junit dependancy is found then jdepend has been poluted
          // with test classes and all tests are meaningless
          assertNull(
              "JUnit dependancy found",
              dependancies.getPackage("junit.framework"));
  
          // the same applies to jdepend
          assertNull(
              "JDepend dependancy found",
              dependancies.getPackage("jdepend.framework"));
      }
  
      public void testAcceptableDistance() {
          Collection packages = dependancies.getPackages();
          // only interested in cli2
          packages = cli2Packages(packages);
          // resources is well off the line
          packages =
              namedPackages(packages, "org.apache.commons.cli2.resource", false);
  
          for (final Iterator i = packages.iterator(); i.hasNext();) {
              final JavaPackage pkg = (JavaPackage)i.next();
              final float distance = pkg.distance();
              final String message = pkg.getName() + " too far from line: " + distance;
              assertTrue(
                  message,
                  distance < 0.21d);
          }
      }
  
      public void testNoCyclesPresent() {
          assertEquals("Cycles exist", false, dependancies.containsCycles());
      }
  
      public void testApiIndependance() {
          dependancies.analyze();
  
          final JavaPackage apiPackage =
              dependancies.getPackage("org.apache.commons.cli2");
          final Collection dependsUpon = cli2Packages(apiPackage.getEfferents());
  
          assertEquals("Api should depend on one package", 1, dependsUpon.size());
  
          JavaPackage pkg = (JavaPackage) dependsUpon.iterator().next();
          assertEquals(
                  "Wrong package name",
                  "org.apache.commons.cli2.resource",
                  pkg.getName());
      }
  
      private Collection cli2Packages(final Collection incoming) {
          return namedPackages(incoming, "org.apache.commons.cli2", true);
      }
  
      private Collection namedPackages(
          final Collection incoming,
          final String name,
          final boolean include) {
         final Collection outgoing = new ArrayList();
         for (final Iterator i = incoming.iterator(); i.hasNext();) {
             final JavaPackage pkg = (JavaPackage)i.next();
             if (include ^ !pkg.getName().startsWith(name)) {
                 outgoing.add(pkg);
             }
         }
         return outgoing;
     }
 }