core/tests/coretests/src/android/widget/focus/LinearLayoutGridTest.java

/*
 * Copyright (C) 2007 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 android.widget.focus;

import android.test.SingleLaunchActivityTestCase;
import android.test.suitebuilder.annotation.MediumTest;
import android.view.FocusFinder;
import android.view.View;
import android.view.ViewGroup;
import android.widget.focus.LinearLayoutGrid;

/**
 * Tests focus searching between buttons within a grid that are touching, for example,
 * two buttons next two each other would have the left button's right equal to the
 * right button's left.  Same goes for top and bottom edges.
 *
 * This exercises some edge cases of {@link android.view.FocusFinder}.
 */
public class LinearLayoutGridTest extends SingleLaunchActivityTestCase<LinearLayoutGrid> {
    private ViewGroup mRootView;

    public LinearLayoutGridTest() {
        super("com.android.frameworks.coretests", LinearLayoutGrid.class);
    }

    protected void setUp() throws Exception {
        super.setUp();
        mRootView = getActivity().getRootView();
    }

    @MediumTest
    public void testGoDownFromMiddle() {
        assertEquals(getActivity().getButtonAt(2, 1),
                FocusFinder.getInstance().findNextFocus(
                        mRootView,
                        getActivity().getButtonAt(1, 1),
                        View.FOCUS_DOWN));
    }

    @MediumTest
    public void testGoUpFromMiddle() {
        assertEquals(getActivity().getButtonAt(0, 1),
                FocusFinder.getInstance().findNextFocus(
                        mRootView,
                        getActivity().getButtonAt(1, 1),
                        View.FOCUS_UP));
    }

    @MediumTest
    public void testGoRightFromMiddle() {
        assertEquals(getActivity().getButtonAt(1, 2),
                FocusFinder.getInstance().findNextFocus(
                        mRootView,
                        getActivity().getButtonAt(1, 1),
                        View.FOCUS_RIGHT));
    }

    @MediumTest
    public void testGoLeftFromMiddle() {
        assertEquals(getActivity().getButtonAt(1, 0),
                FocusFinder.getInstance().findNextFocus(
                        mRootView,
                        getActivity().getButtonAt(1, 1),
                        View.FOCUS_LEFT));
    }

}