added MultiParentClassLoader

scm-webapp/src/test/java/sonia/scm/plugin/MultiParentClassLoaderTest.java

@@ -0,0 +1,141 @@
+/**
+ * Copyright (c) 2010, Sebastian Sdorra All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer. 2. Redistributions in
+ * binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other
+ * materials provided with the distribution. 3. Neither the name of SCM-Manager;
+ * nor the names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://bitbucket.org/sdorra/scm-manager
+ *
+ */
+
+package sonia.scm.plugin;
+
+import com.google.common.base.Enums;
+import com.google.common.collect.Iterables;
+import com.google.common.collect.Iterators;
+import java.io.IOException;
+import java.net.URL;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Enumeration;
+import java.util.List;
+import static org.junit.Assert.*;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.TemporaryFolder;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import static org.mockito.Mockito.*;
+import static org.hamcrest.Matchers.*;
+import org.mockito.invocation.InvocationOnMock;
+import org.mockito.runners.MockitoJUnitRunner;
+import org.mockito.stubbing.Answer;
+
+/**
+ *
+ * @author Sebastian Sdorra
+ */
+@RunWith(MockitoJUnitRunner.class)
+public class MultiParentClassLoaderTest
+{
+  
+  @Mock
+  private ClassLoader parent1;
+  
+  @Mock
+  private ClassLoader parent2;
+
+  private MultiParentClassLoader classLoader;
+  
+  @Before
+  public void setUp(){
+     classLoader = new MultiParentClassLoader(parent1, parent2);
+  }
+  
+  @Test(expected = ClassNotFoundException.class)
+  public void testClassNotFoundException() throws ClassNotFoundException
+  {
+    when(parent1.loadClass("string")).thenThrow(ClassNotFoundException.class);
+    when(parent2.loadClass("string")).thenThrow(ClassNotFoundException.class);
+    classLoader.loadClass("string");
+  }
+  
+  @Rule
+  public TemporaryFolder tempFolder = new TemporaryFolder();
+  
+  @Test
+  public void testGetResource() throws IOException
+  {
+    URL url1 = tempFolder.newFile().toURI().toURL();
+    URL url2 = tempFolder.newFile().toURI().toURL();
+    when(parent1.getResource("resource1")).thenReturn(url1);
+    when(parent2.getResource("resource2")).thenReturn(url2);
+    
+    assertEquals(url1, classLoader.getResource("resource1"));
+    assertEquals(url2, classLoader.getResource("resource2"));
+    assertNull(classLoader.getResource("resource3"));
+  }
+  
+  @Test
+  public void testGetResources() throws IOException{
+        URL url1 = tempFolder.newFile().toURI().toURL();
+    URL url2 = tempFolder.newFile().toURI().toURL();
+    URL url3 = tempFolder.newFile().toURI().toURL();
+    when(parent1.getResources("resources")).thenReturn(res(url1, url2));
+    when(parent2.getResources("resources")).thenReturn(res(url3));
+    
+    List<URL> enm = Collections.list(classLoader.getResources("resources"));
+    assertThat(enm, containsInAnyOrder(url1, url2, url3));
+  }
+  
+  @Test
+  public void testLoadClass() throws ClassNotFoundException{
+    when(parent1.loadClass("string")).then(new ClassAnswer(String.class));
+    when(parent1.loadClass("int")).then(new ClassAnswer(Integer.class));
+    
+    assertEquals(String.class, classLoader.loadClass("string"));
+    assertEquals(Integer.class, classLoader.loadClass("int"));
+  }
+  private static class ClassAnswer implements Answer<Object> {
+  
+    private final Class<?> clazz;
+
+    public ClassAnswer(
+      Class<?> clazz)
+    {
+      this.clazz = clazz;
+    }
+
+    @Override
+    public Object answer(InvocationOnMock invocation) throws Throwable
+    {
+      return clazz;
+    }
+  
+  }
+  
+  private Enumeration<URL> res(URL... urls){
+    return Collections.enumeration(Arrays.asList(urls));
+  }
+  
+}