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/*
* Copyright (C) 2017 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.app.cts;
import android.app.Instrumentation;
import android.app.stubs.DisplayTestActivity;
import android.app.stubs.OrientationTestUtils;
import android.graphics.Point;
import android.test.ActivityInstrumentationTestCase2;
import android.view.Display;
/**
* Tests to verify functionality of {@link Display}.
*/
public class DisplayTest extends ActivityInstrumentationTestCase2<DisplayTestActivity> {
private Instrumentation mInstrumentation;
private DisplayTestActivity mActivity;
public DisplayTest() {
super("android.app.stubs", DisplayTestActivity.class);
}
@Override
protected void setUp() throws Exception {
super.setUp();
mInstrumentation = getInstrumentation();
mActivity = getActivity();
}
/**
* Tests that the underlying {@link android.view.DisplayAdjustments} in {@link Display} updates.
* The method {@link DisplayTestActivity#getDisplay()} fetches the Display directly from the
* {@link android.view.WindowManager}. A display fetched before the rotation should have the
* updated adjustments after a rotation.
*/
public void testRotation() throws Throwable {
// Get a {@link Display} instance before rotation.
final Display origDisplay = mActivity.getDisplay();
// Capture the originally reported width and heights
final Point origSize = new Point();
origDisplay.getSize(origSize);
// Change orientation
mActivity.configurationChangeObserver.startObserving();
OrientationTestUtils.switchOrientation(mActivity);
mActivity.configurationChangeObserver.await();
final Point newOrigSize = new Point();
origDisplay.getSize(newOrigSize);
// Get a {@link Display} instance after rotation.
final Display updatedDisplay = mActivity.getDisplay();
final Point updatedSize = new Point();
updatedDisplay.getSize(updatedSize);
// For square screens the following assertions do not make sense and will always fail.
if (origSize.x != origSize.y) {
// Ensure that the width and height of the original instance no longer are the same. Note
// that this will be false if the device width and height are identical.
// Note there are cases where width and height may not all be updated, such as on docked
// devices where the app is letterboxed. However at least one dimension needs to be
// updated.
assertFalse("size from original display instance should have changed",
origSize.equals(newOrigSize));
}
// Ensure that the width and height of the original instance have been updated to match the
// values that would be found in a new instance.
assertTrue("size from original display instance should match current",
newOrigSize.equals(updatedSize));
}
}
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