Merge change 5503

* changes:
  Update WebKit user agent.
diff --git a/core/java/android/net/MobileDataStateTracker.java b/core/java/android/net/MobileDataStateTracker.java
index 1064fb6..d48cbd5 100644
--- a/core/java/android/net/MobileDataStateTracker.java
+++ b/core/java/android/net/MobileDataStateTracker.java
@@ -377,6 +377,8 @@
         if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) {
             mLastCallingPid = callingPid;
             return setEnableApn(Phone.APN_TYPE_MMS, true);
+        } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DEFAULT)) {
+            return setEnableApn(Phone.APN_TYPE_DEFAULT_FEATURE, true);
         } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) {
             return setEnableApn(Phone.APN_TYPE_SUPL, true);
         } else {
@@ -399,6 +401,8 @@
     public int stopUsingNetworkFeature(String feature, int callingPid, int callingUid) {
         if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) {
             return setEnableApn(Phone.APN_TYPE_MMS, false);
+        } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DEFAULT)) {
+            return setEnableApn(Phone.APN_TYPE_DEFAULT_FEATURE, false);
         } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) {
             return setEnableApn(Phone.APN_TYPE_SUPL, false);
         } else {
diff --git a/core/java/android/webkit/CallbackProxy.java b/core/java/android/webkit/CallbackProxy.java
index c407044..9a8c3c0 100644
--- a/core/java/android/webkit/CallbackProxy.java
+++ b/core/java/android/webkit/CallbackProxy.java
@@ -147,6 +147,16 @@
     }
 
     /**
+     * Get the WebChromeClient.
+     * @return the current WebChromeClient instance.
+     *
+     *@hide pending API council approval.
+     */
+    public WebChromeClient getWebChromeClient() {
+       return mWebChromeClient;
+    }
+
+    /**
      * Set the client DownloadListener.
      * @param client An implementation of DownloadListener.
      */
diff --git a/core/java/android/webkit/HTML5VideoViewProxy.java b/core/java/android/webkit/HTML5VideoViewProxy.java
new file mode 100644
index 0000000..973cb010
--- /dev/null
+++ b/core/java/android/webkit/HTML5VideoViewProxy.java
@@ -0,0 +1,128 @@
+/*
+ * Copyright (C) 2009 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.webkit;
+
+import android.content.Context;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Looper;
+import android.os.Message;
+import android.util.Log;
+import android.view.View;
+import android.widget.MediaController;
+import android.widget.VideoView;
+
+import java.util.HashMap;
+
+/**
+ * <p>A View that displays Videos. Instances of this class
+ * are created on the WebCore thread. However, their code
+ * executes on the UI thread. Right now there is only one
+ * such view for fullscreen video rendering.
+ *
+ */
+class HTML5VideoViewProxy extends Handler {
+    // Logging tag.
+    private static final String LOGTAG = "HTML5VideoViewProxy";
+
+    // Message Ids
+    private static final int INIT              = 100;
+    private static final int PLAY              = 101;
+
+    // The singleton instance.
+    private static HTML5VideoViewProxy sInstance;
+    // The VideoView driven via this proxy.
+    private VideoView mVideoView;
+    // The context object used to initialize the VideoView and the
+    // MediaController.
+    private Context mContext;
+
+    /**
+     * Private constructor.
+     * @param context is the application context.
+     */
+    private HTML5VideoViewProxy(Context context) {
+        // This handler is for the main (UI) thread.
+        super(Looper.getMainLooper());
+        // Save the context object.
+        mContext = context;
+        // Send a message to the UI thread to create the VideoView.
+        // This need to be done on the UI thread, or else the
+        // event Handlers used by the VideoView and MediaController
+        // will be attached to the wrong thread.
+        Message message = obtainMessage(INIT);
+        sendMessage(message);
+    }
+
+    @Override
+    public void handleMessage(Message msg) {
+        // This executes on the UI thread.
+        switch (msg.what) {
+            case INIT:
+                // Create the video view and set a default controller.
+                mVideoView = new VideoView(mContext);
+                mVideoView.setMediaController(new MediaController(mContext));
+                break;
+            case PLAY:
+                // Check if the fullscreen video view is currently playing.
+                // If it is, ignore the message.
+                if (!mVideoView.isPlaying()) {
+                    HashMap<String, Object> map =
+                        (HashMap<String, Object>) msg.obj;
+                    String url = (String) map.get("url");
+                    WebView webview = (WebView) map.get("webview");
+                    WebChromeClient client = webview.getWebChromeClient();
+                    if (client != null) {
+                        mVideoView.setVideoURI(Uri.parse(url));
+                        mVideoView.start();
+                        client.onShowCustomView(mVideoView);
+                    }
+                }
+                break;
+        }
+    }
+
+    /**
+     * Play a video stream.
+     * @param url is the URL of the video stream.
+     * @param webview is the WebViewCore that is requesting the playback.
+     */
+    public void play(String url, WebViewCore webviewCore) {
+        // We need to know the webview that is requesting the playback.
+        Message message = obtainMessage(PLAY);
+        HashMap<String, Object> map = new HashMap();
+        map.put("url", url);
+        map.put("webview", webviewCore.getWebView());
+        message.obj = map;
+        sendMessage(message);
+    }
+
+    /**
+     * The factory for HTML5VideoViewProxy instances. Right now,
+     * it only produces a singleton.
+     * @param webViewCore is the WebViewCore that is requesting the proxy.
+     *
+     * @return the HTML5VideoViewProxy singleton.
+     */
+    public static HTML5VideoViewProxy getInstance(WebViewCore webViewCore) {
+        if (sInstance == null) {
+            sInstance = new HTML5VideoViewProxy(webViewCore.getWebView().getContext());
+        }
+        return sInstance;
+    }
+}
diff --git a/core/java/android/webkit/WebChromeClient.java b/core/java/android/webkit/WebChromeClient.java
index 754b1d9..19e39ed 100644
--- a/core/java/android/webkit/WebChromeClient.java
+++ b/core/java/android/webkit/WebChromeClient.java
@@ -18,6 +18,7 @@
 
 import android.graphics.Bitmap;
 import android.os.Message;
+import android.view.View;
 
 public class WebChromeClient {
 
@@ -44,6 +45,23 @@
     public void onReceivedIcon(WebView view, Bitmap icon) {}
 
     /**
+     * Notify the host application that the current page would
+     * like to show a custom View.
+     * @param view is the View object to be shown.
+     *
+     * @hide pending council approval
+     */
+    public void onShowCustomView(View view) {}
+
+    /**
+     * Notify the host application that the current page would
+     * like to hide its custom view.
+     *
+     * @hide pending council approval
+     */
+    public void onHideCustomView() {}
+
+    /**
      * Request the host application to create a new Webview. The host
      * application should handle placement of the new WebView in the view
      * system. The default behavior returns null.
diff --git a/core/java/android/webkit/WebView.java b/core/java/android/webkit/WebView.java
index 7db5c49..97134d2 100644
--- a/core/java/android/webkit/WebView.java
+++ b/core/java/android/webkit/WebView.java
@@ -2335,6 +2335,16 @@
     }
 
     /**
+     * Gets the chrome handler.
+     * @return the current WebChromeClient instance.
+     *
+     * @hide API council approval.
+     */
+    public WebChromeClient getWebChromeClient() {
+        return mCallbackProxy.getWebChromeClient();
+    }
+
+    /**
      * Set the Picture listener. This is an interface used to receive
      * notifications of a new Picture.
      * @param listener An implementation of WebView.PictureListener.
diff --git a/core/jni/android_util_Process.cpp b/core/jni/android_util_Process.cpp
index 9246197..770c755 100644
--- a/core/jni/android_util_Process.cpp
+++ b/core/jni/android_util_Process.cpp
@@ -269,9 +269,9 @@
 void android_os_Process_setThreadPriority(JNIEnv* env, jobject clazz,
                                               jint pid, jint pri)
 {
-    if (pri == ANDROID_PRIORITY_BACKGROUND) {
+    if (pri >= ANDROID_PRIORITY_BACKGROUND) {
         add_pid_to_cgroup(pid, ANDROID_TGROUP_BG_NONINTERACT);
-    } else if (getpriority(PRIO_PROCESS, pid) == ANDROID_PRIORITY_BACKGROUND) {
+    } else if (getpriority(PRIO_PROCESS, pid) >= ANDROID_PRIORITY_BACKGROUND) {
         add_pid_to_cgroup(pid, ANDROID_TGROUP_DEFAULT);
     }
 
diff --git a/include/tts/TtsEngine.h b/include/tts/TtsEngine.h
index 8486532..ca50a5e 100644
--- a/include/tts/TtsEngine.h
+++ b/include/tts/TtsEngine.h
@@ -69,6 +69,14 @@
     TTS_MISSING_RESOURCES       = -6
 };
 
+enum tts_support_result {
+    TTS_LANG_COUNTRY_VAR_AVAILABLE = 2,
+    TTS_LANG_COUNTRY_AVAILABLE = 1,
+    TTS_LANG_AVAILABLE = 0,
+    TTS_LANG_MISSING_DATA = -1,
+    TTS_LANG_NOT_SUPPORTED = -2
+};
+
 class TtsEngine
 {
 public:
@@ -86,19 +94,32 @@
     // @return TTS_SUCCESS, or TTS_FAILURE
     virtual tts_result stop();
 
+    // Returns the level of support for the language, country and variant.
+    // @return TTS_LANG_COUNTRY_VAR_AVAILABLE if the language, country and variant are supported,
+    //            and the corresponding resources are correctly installed
+    //         TTS_LANG_COUNTRY_AVAILABLE if the language and country are supported and the
+    //             corresponding resources are correctly installed, but there is no match for
+    //             the specified variant
+    //         TTS_LANG_AVAILABLE if the language is supported and the
+    //             corresponding resources are correctly installed, but there is no match for
+    //             the specified country and variant
+    //         TTS_LANG_MISSING_DATA if the required resources to provide any level of support
+    //             for the language are not correctly installed
+    //         TTS_LANG_NOT_SUPPORTED if the language is not supported by the TTS engine.
+    virtual tts_support_result isLanguageAvailable(const char *lang, const char *country,
+            const char *variant);
+
     // Load the resources associated with the specified language. The loaded
     // language will only be used once a call to setLanguage() with the same
-    // language value is issued. Language values are based on the Android
-    // conventions for localization as described in the Android platform
-    // documentation on internationalization. This implies that language
-    // data is specified in the format xx-rYY, where xx is a two letter
-    // ISO 639-1 language code in lowercase and rYY is a two letter
-    // ISO 3166-1-alpha-2 language code in uppercase preceded by a
-    // lowercase "r".
-    // @param value pointer to the language value
-    // @param size  length of the language value
+    // language value is issued. Language and country values are coded according to the ISO three
+    // letter codes for languages and countries, as can be retrieved from a java.util.Locale
+    // instance. The variant value is encoded as the variant string retrieved from a
+    // java.util.Locale instance built with that variant data.
+    // @param lang pointer to the ISO three letter code for the language
+    // @param country pointer to the ISO three letter code for the country
+    // @param variant pointer to the variant code
     // @return TTS_SUCCESS, or TTS_FAILURE
-    virtual tts_result loadLanguage(const char *value, const size_t size);
+    virtual tts_result loadLanguage(const char *lang, const char *country, const char *variant);
     
     // Load the resources associated with the specified language, country and Locale variant.
     // The loaded language will only be used once a call to setLanguageFromLocale() with the same
diff --git a/packages/TtsService/jni/android_tts_SynthProxy.cpp b/packages/TtsService/jni/android_tts_SynthProxy.cpp
index c356acb..8537cae 100644
--- a/packages/TtsService/jni/android_tts_SynthProxy.cpp
+++ b/packages/TtsService/jni/android_tts_SynthProxy.cpp
@@ -297,8 +297,32 @@
                 variantNativeString);
     }
     env->ReleaseStringUTFChars(language, langNativeString);
-    env->ReleaseStringUTFChars(language, countryNativeString);
-    env->ReleaseStringUTFChars(language, variantNativeString);
+    env->ReleaseStringUTFChars(country, countryNativeString);
+    env->ReleaseStringUTFChars(variant, variantNativeString);
+}
+
+
+static void
+android_tts_SynthProxy_loadLanguage(JNIEnv *env, jobject thiz, jint jniData,
+        jstring language, jstring country, jstring variant)
+{
+    if (jniData == 0) {
+        LOGE("android_tts_SynthProxy_loadLanguage(): invalid JNI data");
+        return;
+    }
+
+    SynthProxyJniStorage* pSynthData = (SynthProxyJniStorage*)jniData;
+    const char *langNativeString = env->GetStringUTFChars(language, 0);
+    const char *countryNativeString = env->GetStringUTFChars(country, 0);
+    const char *variantNativeString = env->GetStringUTFChars(variant, 0);
+    // TODO check return codes
+    if (pSynthData->mNativeSynthInterface) {
+        pSynthData->mNativeSynthInterface->loadLanguage(langNativeString, countryNativeString,
+                variantNativeString);
+    }
+    env->ReleaseStringUTFChars(language, langNativeString);
+    env->ReleaseStringUTFChars(country, countryNativeString);
+    env->ReleaseStringUTFChars(variant, variantNativeString);
 }
 
 
@@ -567,6 +591,10 @@
         "(ILjava/lang/String;Ljava/lang/String;Ljava/lang/String;)V",
         (void*)android_tts_SynthProxy_setLanguage
     },
+    {   "native_loadLanguage",
+        "(ILjava/lang/String;Ljava/lang/String;Ljava/lang/String;)V",
+        (void*)android_tts_SynthProxy_loadLanguage
+    },
     {   "native_setSpeechRate",
         "(II)V",
         (void*)android_tts_SynthProxy_setSpeechRate
diff --git a/packages/TtsService/src/android/tts/SynthProxy.java b/packages/TtsService/src/android/tts/SynthProxy.java
index 3bdff37..a8eaaa43 100755
--- a/packages/TtsService/src/android/tts/SynthProxy.java
+++ b/packages/TtsService/src/android/tts/SynthProxy.java
@@ -73,6 +73,13 @@
     public void setLanguage(String language, String country, String variant) {
         native_setLanguage(mJniData, language, country, variant);
     }
+    
+    /**
+     * Loads the language: it's not set, but prepared for use later.
+     */
+    public void loadLanguage(String language, String country, String variant) {
+        native_loadLanguage(mJniData, language, country, variant);
+    }
 
     /**
      * Sets the speech rate
@@ -149,6 +156,9 @@
 
     private native final void native_setLanguage(int jniData, String language, String country,
             String variant);
+    
+    private native final void native_loadLanguage(int jniData, String language, String country,
+            String variant);
 
     private native final void native_setSpeechRate(int jniData, int speechRate);
     
diff --git a/telephony/java/com/android/internal/telephony/Phone.java b/telephony/java/com/android/internal/telephony/Phone.java
index c8d384d..b02c692 100644
--- a/telephony/java/com/android/internal/telephony/Phone.java
+++ b/telephony/java/com/android/internal/telephony/Phone.java
@@ -119,8 +119,11 @@
     static final String APN_TYPE_MMS = "mms";
     /** APN type for SUPL assisted GPS */
     static final String APN_TYPE_SUPL = "supl";
+    /** APN type for default data traffic, when requested using startUsingNetworkFeature */
+    static final String APN_TYPE_DEFAULT_FEATURE = "default-feature";
 
     // "Features" accessible through the connectivity manager
+    static final String FEATURE_ENABLE_DEFAULT = "enableDEFAULT";
     static final String FEATURE_ENABLE_MMS = "enableMMS";
     static final String FEATURE_ENABLE_SUPL = "enableSUPL";
 
diff --git a/telephony/java/com/android/internal/telephony/gsm/GsmDataConnectionTracker.java b/telephony/java/com/android/internal/telephony/gsm/GsmDataConnectionTracker.java
index 035c690..25a5f51 100644
--- a/telephony/java/com/android/internal/telephony/gsm/GsmDataConnectionTracker.java
+++ b/telephony/java/com/android/internal/telephony/gsm/GsmDataConnectionTracker.java
@@ -130,7 +130,8 @@
     private static int APN_DEFAULT_ID = 0;
     private static int APN_MMS_ID = 1;
     private static int APN_SUPL_ID = 2;
-    private static int APN_NUM_TYPES = 3;
+    private static int APN_DEFAULT_FEATURE_ID = 3;
+    private static int APN_NUM_TYPES = 4;
 
     private boolean[] dataEnabled = new boolean[APN_NUM_TYPES];
 
@@ -317,7 +318,8 @@
     /**
      * Ensure that we are connected to an APN of the specified type.
      * @param type the APN type (currently the only valid values
-     * are {@link Phone#APN_TYPE_MMS} and {@link Phone#APN_TYPE_SUPL})
+     * are {@link Phone#APN_TYPE_MMS}, {@link Phone#APN_TYPE_SUPL}
+     * and {@link Phone#APN_TYPE_DEFAULT_FEATURE})
      * @return the result of the operation. Success is indicated by
      * a return value of either {@code Phone.APN_ALREADY_ACTIVE} or
      * {@code Phone.APN_REQUEST_STARTED}. In the latter case, a broadcast
@@ -325,7 +327,13 @@
      * the APN has been established.
      */
     protected int enableApnType(String type) {
-        if (!TextUtils.equals(type, Phone.APN_TYPE_MMS) &&
+        /* FIXME: APN_TYPE_DEFAULT_FEATURE is used to request the default APN.
+         * Due to the way mRequestedApnType is used, we needed to add 
+         * a different APN_TYPE for this rather than using APN_TYPE_DEFAULT.
+         */
+
+        if (!TextUtils.equals(type, Phone.APN_TYPE_DEFAULT_FEATURE) &&
+                !TextUtils.equals(type, Phone.APN_TYPE_MMS) &&
                 !TextUtils.equals(type, Phone.APN_TYPE_SUPL)) {
             return Phone.APN_REQUEST_FAILED;
         }
@@ -363,12 +371,14 @@
      * use of the default APN has not been explicitly disabled, we are connected
      * to the default APN.
      * @param type the APN type. The only valid values are currently
-     * {@link Phone#APN_TYPE_MMS} and {@link Phone#APN_TYPE_SUPL}.
+     * {@link Phone#APN_TYPE_MMS} {@link Phone#APN_TYPE_SUPL} and
+     * {@link Phone#APN_TYPE_DEFAULT_FEATURE}).
      * @return
      */
     protected int disableApnType(String type) {
         Log.d(LOG_TAG, "disableApnType("+type+")");
-        if ((TextUtils.equals(type, Phone.APN_TYPE_MMS) ||
+        if ((TextUtils.equals(type, Phone.APN_TYPE_DEFAULT_FEATURE) ||
+                TextUtils.equals(type, Phone.APN_TYPE_MMS) ||
                 TextUtils.equals(type, Phone.APN_TYPE_SUPL))
                 && isEnabled(type)) {
             removeMessages(EVENT_RESTORE_DEFAULT_APN);
@@ -419,6 +429,9 @@
 
     private boolean isApnTypeActive(String type) {
         // TODO: to support simultaneous, mActiveApn can be a List instead.
+        if (TextUtils.equals(type, Phone.APN_TYPE_DEFAULT_FEATURE)) {
+            type = Phone.APN_TYPE_DEFAULT;
+        }
         return mActiveApn != null && mActiveApn.canHandleType(type);
     }
 
@@ -440,6 +453,8 @@
             return dataEnabled[APN_MMS_ID];
         } else if (TextUtils.equals(apnType, Phone.APN_TYPE_SUPL)) {
             return dataEnabled[APN_SUPL_ID];
+        } else if (TextUtils.equals(apnType, Phone.APN_TYPE_DEFAULT_FEATURE)) {
+            return dataEnabled[APN_DEFAULT_FEATURE_ID];
         } else {
             return false;
         }
@@ -453,10 +468,13 @@
             dataEnabled[APN_MMS_ID] = enable;
         } else if (TextUtils.equals(apnType, Phone.APN_TYPE_SUPL)) {
             dataEnabled[APN_SUPL_ID] = enable;
+        } else if (TextUtils.equals(apnType, Phone.APN_TYPE_DEFAULT_FEATURE)) {
+            dataEnabled[APN_DEFAULT_FEATURE_ID] = enable;
         }
         Log.d(LOG_TAG, "dataEnabled[DEFAULT_APN]=" + dataEnabled[APN_DEFAULT_ID] +
                 " dataEnabled[MMS_APN]=" + dataEnabled[APN_MMS_ID] +
-                " dataEnabled[SUPL_APN]=" + dataEnabled[APN_SUPL_ID]);
+                " dataEnabled[SUPL_APN]=" + dataEnabled[APN_SUPL_ID] +
+                " dataEnabled[APN_DEFAULT_FEATURE_ID]=" + dataEnabled[APN_DEFAULT_FEATURE_ID]);
     }
 
     /**
@@ -484,7 +502,9 @@
             // Don't tear down if there is an active APN and it handles MMS or SUPL.
             // TODO: This isn't very general.
             if ((isApnTypeActive(Phone.APN_TYPE_MMS) && isEnabled(Phone.APN_TYPE_MMS)) ||
-                (isApnTypeActive(Phone.APN_TYPE_SUPL) && isEnabled(Phone.APN_TYPE_SUPL))) {
+                (isApnTypeActive(Phone.APN_TYPE_SUPL) && isEnabled(Phone.APN_TYPE_SUPL)) ||
+                (isApnTypeActive(Phone.APN_TYPE_DEFAULT_FEATURE) &&
+                    isEnabled(Phone.APN_TYPE_DEFAULT_FEATURE))) {
                 return false;
             }
             Message msg = obtainMessage(EVENT_CLEAN_UP_CONNECTION);
@@ -514,7 +534,8 @@
      * {@code true} otherwise.
      */
     public boolean getAnyDataEnabled() {
-        return dataEnabled[APN_DEFAULT_ID] || dataEnabled[APN_MMS_ID] || dataEnabled[APN_SUPL_ID];
+        return dataEnabled[APN_DEFAULT_ID] || dataEnabled[APN_MMS_ID] ||
+                dataEnabled[APN_SUPL_ID] || dataEnabled[APN_DEFAULT_FEATURE_ID];
     }
 
     /**
@@ -1289,7 +1310,8 @@
              * rather an app that inadvertantly fails to reset to the
              * default APN, or that dies before doing so.
              */
-            if (dataEnabled[APN_MMS_ID] || dataEnabled[APN_SUPL_ID]) {
+            if (dataEnabled[APN_MMS_ID] || dataEnabled[APN_SUPL_ID] ||
+                    dataEnabled[APN_DEFAULT_FEATURE_ID]) {
                 removeMessages(EVENT_RESTORE_DEFAULT_APN);
                 sendMessageDelayed(obtainMessage(EVENT_RESTORE_DEFAULT_APN),
                         getRestoreDefaultApnDelay());
diff --git a/tests/backup/src/com/android/backuptest/BackupTestAgent.java b/tests/backup/src/com/android/backuptest/BackupTestAgent.java
index 931dcb0..6acd90c 100644
--- a/tests/backup/src/com/android/backuptest/BackupTestAgent.java
+++ b/tests/backup/src/com/android/backuptest/BackupTestAgent.java
@@ -23,7 +23,8 @@
 {
     public void onCreate() {
         addHelper("data_files", new FileBackupHelper(this, BackupTestActivity.FILE_NAME));
-        addHelper("more_data_files", new FileBackupHelper(this, "another_file.txt", "3.txt"));
+        addHelper("more_data_files", new FileBackupHelper(this, "another_file.txt", "3.txt",
+                    "empty.txt"));
     }
 }
 
diff --git a/tests/backup/test_backup.sh b/tests/backup/test_backup.sh
index f6c73d8..6ef5dff 100755
--- a/tests/backup/test_backup.sh
+++ b/tests/backup/test_backup.sh
@@ -12,6 +12,7 @@
            echo -n first file > /data/data/com.android.backuptest/files/file.txt ; \
            echo -n asdf > /data/data/com.android.backuptest/files/another_file.txt ; \
            echo -n 3 > /data/data/com.android.backuptest/files/3.txt ; \
+           echo -n "" > /data/data/com.android.backuptest/files/empty.txt ; \
 "
 
 # say that the data has changed
diff --git a/tests/backup/test_restore.sh b/tests/backup/test_restore.sh
index 69da28c..f3d581e 100755
--- a/tests/backup/test_restore.sh
+++ b/tests/backup/test_restore.sh
@@ -35,6 +35,7 @@
 check_file file.txt "first file"
 check_file another_file.txt "asdf"
 check_file 3.txt "3"
+check_file empty.txt ""
 
 echo
 echo