Have unittests run as the bluetooth user and add file system tests

<?xml version="1.0" encoding="utf-8"?>

<!-- package name must be unique so suffix with "tests" so package loader doesn't ignore us -->

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

          package="com.android.bluetooth.tests">

          package="com.android.bluetooth.tests"

          android:sharedUserId="android.uid.bluetooth">

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

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

package com.android.bluetooth;

import android.test.AndroidTestCase;

import java.io.IOException;

import java.io.File;

// Test Bluetooth's ability to write to the different directories that it

// is supposed to own

public class FileSystemWriteTest extends AndroidTestCase {

    public void testBluetoothDirWrite() {

        try {

            File file = new File("/data/misc/bluetooth/test.file");

            assertTrue("File not created", file.createNewFile());

            file.delete();

        } catch (IOException e) {

            fail("Exception creating file /data/misc/bluetooth/test.file: " + e);

        }

    }

    public void testBluedroidDirWrite() {

        try {

            File file = new File("/data/misc/bluedroid/test.file");

            assertTrue("File not created", file.createNewFile());

            file.delete();

        } catch (IOException e) {

            fail("Exception creating file /data/misc/bluedroid/test.file: " + e);

        }

    }

    public void testBluetoothLogsDirWrite() {

        try {

            File file = new File("/data/misc/bluetooth/logs/test.file");

            assertTrue("File not created", file.createNewFile());

            file.delete();

        } catch (IOException e) {

            fail("Exception creating file /data/misc/bluetooth/logs/test.file: " + e);

        }

    }

}