| /* |
| * Copyright (C) 2015 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 com.android.mtp; |
| |
| import android.app.PendingIntent; |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.hardware.usb.UsbDevice; |
| import android.hardware.usb.UsbDeviceConnection; |
| import android.hardware.usb.UsbManager; |
| |
| import java.io.IOException; |
| import java.util.HashMap; |
| import java.util.concurrent.CountDownLatch; |
| import junit.framework.Assert; |
| |
| /** |
| * Static utility methods for testing. |
| */ |
| class TestUtil { |
| private static final String ACTION_USB_PERMISSION = |
| "com.android.mtp.USB_PERMISSION"; |
| |
| private TestUtil() {} |
| |
| /** |
| * Requests permission for a MTP device and returns the first MTP device that has at least one |
| * storage. |
| * @throws Exception |
| */ |
| static UsbDevice setupMtpDevice( |
| TestResultInstrumentation instrumentation, |
| UsbManager usbManager, |
| MtpManager manager) throws Exception { |
| for (int i = 0; i < 2; i++) { |
| final UsbDevice device = findMtpDevice(instrumentation, usbManager); |
| manager.openDevice(device.getDeviceId()); |
| try { |
| waitForStorages(instrumentation, manager, device.getDeviceId()); |
| return device; |
| } catch (IOException exp) { |
| // When the MTP device is Android, and it changes the USB device type from |
| // "Charging" to "MTP", the device ID will be updated. We need to find a device |
| // again. |
| continue; |
| } |
| } |
| throw new IOException("Failed to obtain MTP devices"); |
| } |
| |
| private static UsbDevice findMtpDevice( |
| TestResultInstrumentation instrumentation, |
| UsbManager usbManager) throws InterruptedException { |
| while (true) { |
| final HashMap<String,UsbDevice> devices = usbManager.getDeviceList(); |
| if (devices.size() == 0) { |
| instrumentation.show("Wait for devices."); |
| Thread.sleep(1000); |
| continue; |
| } |
| final UsbDevice device = devices.values().iterator().next(); |
| requestPermission(instrumentation, usbManager, device); |
| final UsbDeviceConnection connection = usbManager.openDevice(device); |
| if (connection == null) { |
| Assert.fail("Cannot open USB connection."); |
| return null; |
| } |
| for (int i = 0; i < device.getInterfaceCount(); i++) { |
| // Since the test runs real environment, we need to call claim interface with |
| // force = true to rob interfaces from other applications. |
| connection.claimInterface(device.getInterface(i), true); |
| connection.releaseInterface(device.getInterface(i)); |
| } |
| connection.close(); |
| return device; |
| } |
| } |
| |
| private static void requestPermission( |
| final TestResultInstrumentation instrumentation, |
| UsbManager usbManager, |
| UsbDevice device) throws InterruptedException { |
| if (usbManager.hasPermission(device)) { |
| return; |
| } |
| final CountDownLatch latch = new CountDownLatch(1); |
| final BroadcastReceiver receiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| latch.countDown(); |
| instrumentation.getTargetContext().unregisterReceiver(this); |
| } |
| }; |
| instrumentation.getTargetContext().registerReceiver( |
| receiver, new IntentFilter(ACTION_USB_PERMISSION)); |
| usbManager.requestPermission(device, PendingIntent.getBroadcast( |
| instrumentation.getTargetContext(), |
| 0 /* requstCode */, |
| new Intent(ACTION_USB_PERMISSION), |
| 0 /* flags */)); |
| latch.await(); |
| Assert.assertTrue(usbManager.hasPermission(device)); |
| } |
| |
| private static void waitForStorages( |
| TestResultInstrumentation instrumentation, |
| MtpManager manager, |
| int deviceId) throws Exception { |
| while (true) { |
| if (manager.getRoots(deviceId).length == 0) { |
| instrumentation.show("Wait for storages."); |
| Thread.sleep(1000); |
| continue; |
| } |
| return; |
| } |
| } |
| } |