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Commit 57f4b77c authored by Mårten Kongstad's avatar Mårten Kongstad Committed by Kenneth Andersson
Browse files

Runtime resource overlay, iteration 1. 

Runtime resource overlay allows unmodified applications to appear
as if they had been compiled with additional resources defined. See
libs/utils/README for more information.

This commit is the first iteration of runtime resource overlay. It
provides the actual overlay modifications and loading of trusted overlay
packages (ie residing in /vendor) targeting framework-res.apk.

This commit loads exactly one overlay package. The overlay,
if present, must target framework-res.apk and be located at
/vendor/overlay/framework/framework-res.apk.

Change-Id: If26ee7754813004a96c043dba37fbe99fa3919db
parent c6b22e27

core/tests/overlaytests/Android.mk

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# Dummy makefile to halt recursive directory traversal.



LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

core/tests/overlaytests/OverlayTest/Android.mk

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LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)



LOCAL_MODULE_TAGS := tests



LOCAL_PACKAGE_NAME := OverlayTest



LOCAL_SRC_FILES := $(call all-java-files-under, src)



include $(BUILD_PACKAGE)

core/tests/overlaytests/OverlayTest/AndroidManifest.xml

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<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.android.overlaytest">

    <uses-permission android:name="android.permission.RUN_INSTRUMENTATION"/>

    <application>

        <uses-library android:name="android.test.runner"/>

    </application>

    <instrumentation android:name="android.test.InstrumentationTestRunner"

        android:targetPackage="com.android.overlaytest"

        android:label="Runtime resource overlay tests"/>

</manifest>

core/tests/overlaytests/OverlayTest/src/com/android/overlaytest/OverlayBaseTest.java

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package com.android.overlaytest;



import android.content.res.Configuration;

import android.content.res.Resources;

import android.test.AndroidTestCase;

import java.io.InputStream;

import java.util.Locale;



public abstract class OverlayBaseTest extends AndroidTestCase {

    private Resources mResources;

    protected boolean mWithOverlay; // will be set by subclasses



    protected void setUp() {

        mResources = getContext().getResources();

    }



    private int calculateRawResourceChecksum(int resId) throws Throwable {

        InputStream input = null;

        try {

            input = mResources.openRawResource(resId);

            int ch, checksum = 0;

            while ((ch = input.read()) != -1) {

                checksum = (checksum + ch) % 0xffddbb00;

            }

            return checksum;

        } finally {

            input.close();

        }

    }



    private void setLocale(String code) {

        Locale locale = new Locale(code);

        Locale.setDefault(locale);

        Configuration config = new Configuration();

        config.locale = locale;

        mResources.updateConfiguration(config, mResources.getDisplayMetrics());

    }



    private void assertResource(int resId, boolean ewo, boolean ew) throws Throwable {

        boolean expected = mWithOverlay ? ew : ewo;

        boolean actual = mResources.getBoolean(resId);

        assertEquals(expected, actual);

    }



    private void assertResource(int resId, String ewo, String ew) throws Throwable {

        String expected = mWithOverlay ? ew : ewo;

        String actual = mResources.getString(resId);

        assertEquals(expected, actual);

    }



    private void assertResource(int resId, int[] ewo, int[] ew) throws Throwable {

        int[] expected = mWithOverlay ? ew : ewo;

        int[] actual = mResources.getIntArray(resId);

        assertEquals("length:", expected.length, actual.length);

        for (int i = 0; i < actual.length; ++i) {

            assertEquals("index " + i + ":", actual[i], expected[i]);

        }

    }



    public void testBooleanOverlay() throws Throwable {

        // config_automatic_brightness_available has overlay (default config)

        final int resId = com.android.internal.R.bool.config_automatic_brightness_available;

        assertResource(resId, false, true);

    }



    public void testBoolean() throws Throwable {

        // config_bypass_keyguard_if_slider_open has no overlay

        final int resId = com.android.internal.R.bool.config_bypass_keyguard_if_slider_open;

        assertResource(resId, true, true);

    }



    public void testStringOverlay() throws Throwable {

        // phoneTypeCar has an overlay (default config), which shouldn't shadow

        // the Swedish translation

        final int resId = com.android.internal.R.string.phoneTypeCar;

        setLocale("sv_SE");

        assertResource(resId, "Bil", "Bil");

    }



    public void testStringSwedishOverlay() throws Throwable {

        // phoneTypeWork has overlay (no default config, only for lang=sv)

        final int resId = com.android.internal.R.string.phoneTypeWork;

        setLocale("en_US");

        assertResource(resId, "Work", "Work");

        setLocale("sv_SE");

        assertResource(resId, "Arbete", "Jobb");

    }



    public void testString() throws Throwable {

        // phoneTypeHome has no overlay

        final int resId = com.android.internal.R.string.phoneTypeHome;

        setLocale("en_US");

        assertResource(resId, "Home", "Home");

        setLocale("sv_SE");

        assertResource(resId, "Hem", "Hem");

    }



    public void testIntegerArrayOverlay() throws Throwable {

        // config_scrollBarrierVibePattern has overlay (default config)

        final int resId = com.android.internal.R.array.config_scrollBarrierVibePattern;

        assertResource(resId, new int[]{0, 15, 10, 10}, new int[]{100, 200, 300});

    }



    public void testIntegerArray() throws Throwable {

        // config_virtualKeyVibePattern has no overlay

        final int resId = com.android.internal.R.array.config_virtualKeyVibePattern;

        final int[] expected = {0, 10, 20, 30};

        assertResource(resId, expected, expected);

    }



    public void testAsset() throws Throwable {

        // drawable/default_background.jpg has overlay (default config)

        final int resId = com.android.internal.R.drawable.default_wallpaper;

        int actual = calculateRawResourceChecksum(resId);

        int expected = mWithOverlay ? 0x000051da : 0x0014ebce;

        assertEquals(expected, actual);

    }

}

core/tests/overlaytests/OverlayTest/src/com/android/overlaytest/WithOverlayTest.java

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package com.android.overlaytest;



public class WithOverlayTest extends OverlayBaseTest {

    public WithOverlayTest() {

        mWithOverlay = true;

    }

}