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 
17 package com.android.tests.testprojecttest.lib;
18 
19 import android.test.ActivityInstrumentationTestCase2;
20 import android.widget.TextView;
21 
22 import androidx.test.filters.MediumTest;
23 
24 import com.android.tests.testprojecttest.app.R;
25 
26 /**
27  * An example of an {@link ActivityInstrumentationTestCase2} of a specific activity {@link Focus2}.
28  * By virtue of extending {@link ActivityInstrumentationTestCase2}, the target activity is automatically
29  * launched and finished before and after each test.  This also extends
30  * {@link android.test.InstrumentationTestCase}, which provides
31  * access to methods for sending events to the target activity, such as key and
32  * touch events.  See {@link #sendKeys}.
33  *
34  * In general, {@link android.test.InstrumentationTestCase}s and {@link ActivityInstrumentationTestCase2}s
35  * are heavier weight functional tests available for end to end testing of your
36  * user interface.  When run via a {@link android.test.InstrumentationTestRunner},
37  * the necessary {@link android.app.Instrumentation} will be injected for you to
38  * user via {@link #getInstrumentation} in your tests.
39  *
40  * See {@link com.example.android.apis.AllTests} for documentation on running
41  * all tests and individual tests in this application.
42  */
43 public class LibActivityTest extends ActivityInstrumentationTestCase2<LibActivity> {
44 
45     private TextView mTextView;
46 
47     /**
48      * Creates an {@link ActivityInstrumentationTestCase2} that tests the {@link Focus2} activity.
49      */
LibActivityTest()50     public LibActivityTest() {
51         super(LibActivity.class);
52     }
53 
54     @Override
setUp()55     protected void setUp() throws Exception {
56         super.setUp();
57         final LibActivity a = getActivity();
58         // ensure a valid handle to the activity has been returned
59         assertNotNull(a);
60         mTextView = (TextView) a.findViewById(R.id.text);
61     }
62 
63     /**
64      * The name 'test preconditions' is a convention to signal that if this
65      * test doesn't pass, the test case was not set up properly and it might
66      * explain any and all failures in other tests.  This is not guaranteed
67      * to run before other tests, as junit uses reflection to find the tests.
68      */
69     @MediumTest
testPreconditions()70     public void testPreconditions() {
71         assertNotNull(mTextView);
72     }
73 }
74