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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  package org.apache.commons.collections4;
18  
19  import java.util.ArrayList;
20  import java.util.List;
21  import java.util.ListIterator;
22  
23  import org.apache.commons.lang3.StringUtils;
24  import org.easymock.EasyMock;
25  import org.easymock.IExpectationSetters;
26  
27  /**
28   * Provides utilities for making mock-based tests.  Most notable is the generic "type-safe"
29   * {@link #createMock(Class)} method, and {@link #replay()} and {@link #verify()} methods
30   * that call the respective methods on all created mock objects.
31   */
32  public abstract class MockTestCase {
33      private final List<Object> mockObjects = new ArrayList<>();
34  
35      @SuppressWarnings("unchecked")
36      protected <T> T createMock(final Class<?> name) {
37          final T mock = (T) EasyMock.createMock(name);
38          return registerMock(mock);
39      }
40  
41      protected <T> IExpectationSetters<T> expect(final T t) {
42          return EasyMock.expect(t);
43      }
44  
45      private <T> T registerMock(final T mock) {
46          mockObjects.add(mock);
47          return mock;
48      }
49  
50      protected final void replay() {
51          for (final Object o : mockObjects) {
52              EasyMock.replay(o);
53          }
54      }
55  
56      protected final void verify() {
57          for (final ListIterator<Object> i = mockObjects.listIterator(); i.hasNext();) {
58              try {
59                  EasyMock.verify(i.next());
60              } catch (final AssertionError e) {
61                  throw new AssertionError(i.previousIndex() + 1 + StringUtils.EMPTY
62                          + e.getMessage());
63              }
64          }
65      }
66  }