1/*
2 * Copyright (C) 2015 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.support.v7.util;
18
19import org.junit.Assert;
20import org.junit.Before;
21import org.junit.Rule;
22
23import android.app.Instrumentation;
24import android.support.annotation.UiThread;
25import android.support.test.InstrumentationRegistry;
26import android.support.test.rule.ActivityTestRule;
27import android.support.v7.widget.TestActivity;
28import android.test.ActivityInstrumentationTestCase2;
29
30abstract public class BaseThreadedTest {
31    @Rule
32    public ActivityTestRule<TestActivity> mActivityRule = new ActivityTestRule<>(
33            TestActivity.class);
34
35    public final void setUp() throws Exception{
36        try {
37            getInstrumentation().runOnMainSync(new Runnable() {
38                @Override
39                public void run() {
40                    setUpUi();
41                }
42            });
43        } catch (Throwable throwable) {
44            Assert.fail(throwable.getMessage());
45        }
46    }
47
48    public Instrumentation getInstrumentation() {
49        return InstrumentationRegistry.getInstrumentation();
50    }
51
52    public void runTestOnUiThread(final Runnable test) {
53        final Throwable[] error = new Throwable[1];
54        getInstrumentation().runOnMainSync(new Runnable() {
55            @Override
56            public void run() {
57                try {
58                    test.run();
59                } catch (Throwable t) {
60                    error[0] = t;
61                }
62            }
63        });
64        Assert.assertNull(error[0]);
65    }
66
67    @UiThread
68    protected abstract void setUpUi();
69}
70