Android example source code file (Focus2ActivityTest.java)

This example Android source code file (Focus2ActivityTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

activityinstrumentationtestcase2, android, button, exception, focus2activitytest, mediumtest, override, runnable, test, ui, view, widget

The Focus2ActivityTest.java Android example source code

/*
 * Copyright (C) 2008 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.android.apis.view;

import com.example.android.apis.R;

import android.test.ActivityInstrumentationTestCase2;
import android.test.suitebuilder.annotation.MediumTest;
import android.view.KeyEvent;
import android.widget.Button;

/**
 * An example of an {@link ActivityInstrumentationTestCase} of a specific activity {@link Focus2}.
 * By virtue of extending {@link ActivityInstrumentationTestCase}, the target activity is automatically
 * launched and finished before and after each test.  This also extends
 * {@link android.test.InstrumentationTestCase}, which provides
 * access to methods for sending events to the target activity, such as key and
 * touch events.  See {@link #sendKeys}.
 *
 * In general, {@link android.test.InstrumentationTestCase}s and {@link ActivityInstrumentationTestCase}s
 * are heavier weight functional tests available for end to end testing of your
 * user interface.  When run via a {@link android.test.InstrumentationTestRunner},
 * the necessary {@link android.app.Instrumentation} will be injected for you to
 * user via {@link #getInstrumentation} in your tests.
 *
 * See {@link com.example.android.apis.app.ForwardingTest} for an example of an Activity unit test.
 *
 * See {@link com.example.android.apis.AllTests} for documentation on running
 * all tests and individual tests in this application.
 */
public class Focus2ActivityTest extends ActivityInstrumentationTestCase2<Focus2> {

    private Button mLeftButton;
    private Button mCenterButton;
    private Button mRightButton;

    /**
     * Creates an {@link ActivityInstrumentationTestCase2} that tests the {@link Focus2} activity.
     */
    public Focus2ActivityTest() {
        super(Focus2.class);
    }

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        final Focus2 a = getActivity();
        // ensure a valid handle to the activity has been returned
        assertNotNull(a);
        mLeftButton = (Button) a.findViewById(R.id.leftButton);
        mCenterButton = (Button) a.findViewById(R.id.centerButton);
        mRightButton = (Button) a.findViewById(R.id.rightButton);
    }

    /**
     * The name 'test preconditions' is a convention to signal that if this
     * test doesn't pass, the test case was not set up properly and it might
     * explain any and all failures in other tests.  This is not guaranteed
     * to run before other tests, as junit uses reflection to find the tests.
     */
    @MediumTest
    public void testPreconditions() {
        assertTrue("center button should be right of left button",
                mLeftButton.getRight() < mCenterButton.getLeft());
        assertTrue("right button should be right of center button",
                mCenterButton.getRight() < mRightButton.getLeft());
        assertTrue("left button should be focused", mLeftButton.isFocused());
    }

    @MediumTest
    public void testGoingRightFromLeftButtonJumpsOverCenterToRight() {
        sendKeys(KeyEvent.KEYCODE_DPAD_RIGHT);
        assertTrue("right button should be focused", mRightButton.isFocused());
    }

    @MediumTest
    public void testGoingLeftFromRightButtonGoesToCenter()  {
        // Give right button focus by having it request focus.  We post it
        // to the UI thread because we are not running on the same thread, and
        // any direct api calls that change state must be made from the UI thread.
        // This is in contrast to instrumentation calls that send events that are
        // processed through the framework and eventually find their way to
        // affecting the ui thread.
        getActivity().runOnUiThread(new Runnable() {
            public void run() {
                mRightButton.requestFocus();
            }
        });
        // wait for the request to go through
        getInstrumentation().waitForIdleSync();

        assertTrue(mRightButton.isFocused());

        sendKeys(KeyEvent.KEYCODE_DPAD_LEFT);
        assertTrue("center button should be focused", mCenterButton.isFocused());
    }
}