wamblee.org Git - utils/blob - support/general/src/test/java/org/wamblee/general/ThreadSpecificProxyFactoryTest.java

   1 /*
   2  * Copyright 2005-2010 the original author or authors.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.wamblee.general;
  17
  18 import static junit.framework.Assert.*;
  19 import static org.mockito.Matchers.*;
  20 import static org.mockito.Mockito.*;
  21
  22 import org.junit.After;
  23 import org.junit.Before;
  24 import org.junit.Test;
  25 import org.wamblee.general.ThreadSpecificProxyFactory;
  26 import org.wamblee.general.ThreadSpecificProxyFactory.CreationCallback;
  27
  28 public class ThreadSpecificProxyFactoryTest {
  29
  30     private static interface Service {
  31         int execute(int aX) throws Exception;
  32     }
  33
  34     private ThreadSpecificProxyFactory<Service> factory;
  35     private Service proxy;
  36
  37     @Before
  38     public void setUp() {
  39         factory = new ThreadSpecificProxyFactory<Service>(Service.class);
  40         proxy = factory.getProxy();
  41     }
  42
  43     @After
  44     public void tearDown() {
  45         // Empty.
  46     }
  47
  48     @Test(expected = NullPointerException.class)
  49     public void testNoSvcDefined() throws Exception {
  50         proxy.execute(10);
  51     }
  52
  53     @Test
  54     public void testInvokeThroughProxy() throws Exception {
  55         Service svc = mock(Service.class);
  56         when(svc.execute(anyInt())).thenReturn(50);
  57         factory.set(svc);
  58         assertEquals(50, proxy.execute(10));
  59         verify(svc).execute(10);
  60     }
  61
  62     @Test
  63     public void testCreationCallback() throws Exception {
  64         CreationCallback callback = mock(CreationCallback.class);
  65         Service initialService = mock(Service.class);
  66         when(callback.create()).thenReturn(initialService);
  67
  68         factory = new ThreadSpecificProxyFactory<Service>(Service.class,
  69             callback);
  70         proxy = factory.getProxy();
  71         Service svc = factory.get();
  72
  73         assertSame(initialService, svc);
  74         verify(callback).create();
  75     }
  76
  77     @Test
  78     public void testInvokeThroughProxyWithException() throws Exception {
  79         Service svc = mock(Service.class);
  80         try {
  81             when(svc.execute(anyInt())).thenThrow(
  82                 new RuntimeException("exception thrown"));
  83             factory.set(svc);
  84             svc.execute(10);
  85             fail();
  86         } catch (RuntimeException e) {
  87             assertEquals("exception thrown", e.getMessage());
  88         }
  89     }
  90
  91     private int returnFromThread;
  92
  93     @Test
  94     public void testVerifyThreadSpecificUsingTwoThreads() throws Exception {
  95         Service svc1 = mock(Service.class);
  96         final Service svc2 = mock(Service.class);
  97         when(svc1.execute(anyInt())).thenReturn(10);
  98         when(svc2.execute(anyInt())).thenReturn(20);
  99
 100         factory.set(svc1);
 101         assertEquals(10, svc1.execute(10));
 102         Thread t = new Thread() {
 103             public void run() {
 104                 factory.set(svc2);
 105                 try {
 106                     returnFromThread = proxy.execute(100);
 107                 } catch (Exception e) {
 108                     returnFromThread = 100000;
 109                 }
 110             };
 111         };
 112         t.start();
 113         t.join();
 114         assertEquals(20, returnFromThread);
 115         assertEquals(10, proxy.execute(100));
 116
 117     }
 118
 119     @Test(expected = IllegalArgumentException.class)
 120     public void testNotAnInterface() {
 121         ThreadSpecificProxyFactory f = new ThreadSpecificProxyFactory(
 122             String.class);
 123     }
 124
 125     @Test
 126     public void testProxyToStringWhileUninitialized() {
 127         String val = proxy.toString();
 128     }
 129 }