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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.preference.cts;
import static android.server.wm.WindowManagerState.STATE_RESUMED;
import static org.junit.Assert.assertTrue;
import android.content.ComponentName;
import android.graphics.Bitmap;
import android.server.wm.WindowManagerStateHelper;
import androidx.test.filters.LargeTest;
import androidx.test.rule.ActivityTestRule;
import androidx.test.runner.AndroidJUnit4;
import com.android.compatibility.common.util.BitmapUtils;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;
/**
* This test suite covers {@link android.preference.PreferenceActivity} and its legacy usage that
* inflates only a preference screen without using any headers or fragments. This should verify
* correct behavior in orientation and multi-window changes.
*/
@LargeTest
@RunWith(AndroidJUnit4.class)
public class PreferenceActivityLegacyFlowTest {
// Helper strings to ensure that some parts of preferences are visible or not.
private static final String LEGACY_SCREEN_TEXT = "Preset Title";
static final String TEST_APP_PACKAGE = "android.preference.cts";
private static final String TEST_APP_ACTIVITY = TEST_APP_PACKAGE + ".PreferencesFromXml";
private TestUtils mTestUtils;
private PreferencesFromXml mActivity;
@Rule
public ActivityTestRule<PreferencesFromXml> mActivityRule =
new ActivityTestRule<>(PreferencesFromXml.class, true);
@Before
public void setup() {
mTestUtils = new TestUtils(mActivityRule);
mActivity = mActivityRule.getActivity();
}
/**
* Scenario: Tests that items from the given preference screen are shown.
*/
@Test
public void legacyActivityTest() {
// Prefs list should be shown.
assertTextShown(LEGACY_SCREEN_TEXT);
}
/**
* Scenario: Tests that the activity correctly restores its state after recreation in legacy
* mode.
*/
@Test
public void legacyActivityRecreateTest() {
Bitmap before = mTestUtils.takeScreenshot();
recreate();
// Compare screenshots
Bitmap after = mTestUtils.takeScreenshot();
assertScreenshotsAreEqual(before, after);
}
private void recreate() {
runOnUiThread(() -> mActivity.recreate());
mTestUtils.waitForIdle();
ComponentName testComponentName = new ComponentName(TEST_APP_PACKAGE, TEST_APP_ACTIVITY);
waitForActivityState(testComponentName, STATE_RESUMED);
}
private void runOnUiThread(final Runnable runnable) {
try {
mActivityRule.runOnUiThread(runnable);
} catch (Throwable ex) {
throw new RuntimeException("Failure on the UI thread", ex);
}
}
private void assertScreenshotsAreEqual(Bitmap before, Bitmap after) {
assertTrue("Screenshots do not match!", BitmapUtils.compareBitmaps(before, after));
}
private void assertTextShown(String text) {
assertTrue(mTestUtils.isTextShown(text));
}
public void waitForActivityState(ComponentName activityName, String activityState) {
new WindowManagerStateHelper().waitForActivityState(activityName, activityState);
}
}
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