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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  
18  package org.apache.commons.proxy2.interceptor;
19  
20  import static org.apache.commons.proxy2.interceptor.InterceptorUtils.constant;
21  import static org.junit.Assert.assertEquals;
22  
23  import java.lang.reflect.Method;
24  
25  import org.apache.commons.proxy2.Invocation;
26  import org.apache.commons.proxy2.interceptor.matcher.invocation.MethodNameMatcher;
27  import org.apache.commons.proxy2.util.AbstractTestCase;
28  import org.apache.commons.proxy2.util.Echo;
29  import org.apache.commons.proxy2.util.MockInvocation;
30  import org.junit.Test;
31  
32  public class SwitchInterceptorTest extends AbstractTestCase
33  {
34      //----------------------------------------------------------------------------------------------------------------------
35      // Other Methods
36      //----------------------------------------------------------------------------------------------------------------------
37  
38      @Test
39      public void testWithMultipleAdvices() throws Throwable
40      {
41          SwitchInterceptor interceptor = new SwitchInterceptor();
42          interceptor.when(new MethodNameMatcher("echo")).then(constant("bar"));
43          interceptor.when(new MethodNameMatcher("echoBack")).then(constant("baz"));
44          Method method = Echo.class.getMethod("echoBack", String.class);
45          Invocation invocation = new MockInvocation(method, "foo", "foo");
46          assertEquals("baz", interceptor.intercept(invocation));
47      }
48  
49      @Test
50      public void testWithNoAdvice() throws Throwable
51      {
52          SwitchInterceptor interceptor = new SwitchInterceptor();
53          Method method = Echo.class.getMethod("echoBack", String.class);
54          Invocation invocation = new MockInvocation(method, "foo", "foo");
55          assertEquals("foo", interceptor.intercept(invocation));
56      }
57  
58      @Test
59      public void testWithSingleAdviceWhichDoesNotMatch() throws Throwable
60      {
61          SwitchInterceptor interceptor = new SwitchInterceptor().when(new MethodNameMatcher("echoBackZZZZ")).then(
62                  constant("bar"));
63          Method method = Echo.class.getMethod("echoBack", String.class);
64          Invocation invocation = new MockInvocation(method, "foo", "foo");
65          assertEquals("foo", interceptor.intercept(invocation));
66      }
67  
68      @Test
69      public void testWithSingleAdviceWhichMatches() throws Throwable
70      {
71          SwitchInterceptor interceptor = new SwitchInterceptor().when(new MethodNameMatcher("echoBack")).then(
72                  constant("bar"));
73          Method method = Echo.class.getMethod("echoBack", String.class);
74          Invocation invocation = new MockInvocation(method, "foo", "foo");
75          assertEquals("bar", interceptor.intercept(invocation));
76      }
77  }