ActivityTestCase.java revision e70f61b1160e953e5e4d18d30a463fa9ba821779 
1/*
2 * Copyright (C) 2008 The Android Open Source Project
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
17package android.test;
18
19import android.app.Activity;
20
21import java.lang.reflect.Field;
22
23/**
24 * This is common code used to support Activity test cases.  For more useful classes, please see
25 * {@link android.test.ActivityUnitTestCase} and
26 * {@link android.test.ActivityInstrumentationTestCase}.
27 */
28public abstract class ActivityTestCase extends InstrumentationTestCase {
29
30    /**
31     * The activity that will be set up for use in each test method.
32     */
33    private Activity mActivity;
34
35    /**
36     * @return Returns the activity under test.
37     */
38    protected Activity getActivity() {
39        return mActivity;
40    }
41
42    /**
43     * Set the activity under test.
44     * @param testActivity The activity under test
45     */
46    protected void setActivity(Activity testActivity) {
47        mActivity = testActivity;
48    }
49
50    /**
51     * This function is called by various TestCase implementations, at tearDown() time, in order
52     * to scrub out any class variables.  This protects against memory leaks in the case where a
53     * test case creates a non-static inner class (thus referencing the test case) and gives it to
54     * someone else to hold onto.
55     *
56     * @param testCaseClass The class of the derived TestCase implementation.
57     *
58     * @throws IllegalAccessException
59     */
60    protected void scrubClass(final Class<?> testCaseClass)
61    throws IllegalAccessException {
62        final Field[] fields = getClass().getDeclaredFields();
63        for (Field field : fields) {
64            final Class<?> fieldClass = field.getDeclaringClass();
65            if (testCaseClass.isAssignableFrom(fieldClass) && !field.getType().isPrimitive()) {
66                try {
67                    field.setAccessible(true);
68                    field.set(this, null);
69                } catch (Exception e) {
70                    android.util.Log.d("TestCase", "Error: Could not nullify field!");
71                }
72
73                if (field.get(this) != null) {
74                    android.util.Log.d("TestCase", "Error: Could not nullify field!");
75                }
76            }
77        }
78    }
79
80
81
82}
83