[Android] Add an out-of-app instrumentation driver APK.

testing/android/java/src/org/chromium/test/driver/OnDeviceInstrumentationDriver.java

Index: testing/android/java/src/org/chromium/test/driver/OnDeviceInstrumentationDriver.java
diff --git a/testing/android/java/src/org/chromium/test/driver/OnDeviceInstrumentationDriver.java b/testing/android/java/src/org/chromium/test/driver/OnDeviceInstrumentationDriver.java
new file mode 100644
index 0000000000000000000000000000000000000000..1daa6fd4198cef68118bbe868923ec5b7dd96136
--- /dev/null
+++ b/testing/android/java/src/org/chromium/test/driver/OnDeviceInstrumentationDriver.java
@@ -0,0 +1,412 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.test.driver;
+
+import android.app.Activity;
+import android.app.Instrumentation;
+import android.content.ComponentName;
+import android.content.Intent;
+import android.content.ServiceConnection;
+import android.os.Bundle;
+import android.os.Environment;
+import android.os.Handler;
+import android.os.IBinder;
+import android.os.Looper;
+import android.os.Message;
+import android.os.Messenger;
+import android.os.RemoteException;
+import android.test.InstrumentationTestRunner;
+import android.util.Log;
+
+import org.chromium.test.passenger.OnDeviceInstrumentationPassenger;
+import org.chromium.test.reporter.ReportingService;
+import org.chromium.test.support.ResultsBundleGenerator;
+import org.chromium.test.support.RobotiumBundleGenerator;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.regex.Pattern;
+
+/**
+ * An Instrumentation that drives instrumentation tests from outside the app. (Hence the name.)

[Yaron, 2015/04/07 15:39:04]

I think you can now drop "(Hence the name.)"

[jbudorick, 2015/04/07 19:24:45]

oops, done.

+ */
+public class OnDeviceInstrumentationDriver extends Instrumentation {

[jbudorick, 2015/04/07 15:09:22]

Renamed:
  Outstrumentation -> OnDeviceInstrumentationDriver
  OutstrumentationSlaveActivity -> OnDeviceInstrumentationPassenger
    (still a bad joke, but a more descriptive one)
  org.chromium.test.outstrumentation.master -> org.chromium.test.driver
  org.chromium.test.outstrumentation.slave -> org.chromium.test.passenger
  org.chromium.test.outstrumentation.reporter -> org.chromium.test.reporter

[Yaron, 2015/04/07 15:39:04]

I think it would be helpful to have a mini-dd or one-pager on this that
describes the components and their interaction.

[jbudorick, 2015/04/07 19:24:45]

Can do. I've got it on a whiteboard right now and will post the link when I've
written it up.

+
+    private static final String TAG = "OnDeviceInstrumentationDriver";
+
+    private static final String EXTRA_TEST_LIST =
+            "org.chromium.test.driver.OnDeviceInstrumentationDriver.TestList";
+    private static final String EXTRA_TEST_LIST_FILE =
+            "org.chromium.test.driver.OnDeviceInstrumentationDriver.TestListFile";
+    private static final String EXTRA_TARGET_PACKAGE =
+            "org.chromium.test.driver.OnDeviceInstrumentationDriver.TargetPackage";
+    private static final String EXTRA_TARGET_CLASS =
+            "org.chromium.test.driver.OnDeviceInstrumentationDriver.TargetClass";
+
+    private static final Pattern COMMA = Pattern.compile(",");
+    private static final int SERVICE_WAIT_TIMEOUT = 5000; // ms
+    private static final int TEST_WAIT_TIMEOUT = 10000; // ms
+
+    private boolean mDriverStarted;
+    private Thread mDriverThread;
+    private Bundle mTargetArgs;
+    private String mTargetClass;
+    private String mTargetPackage;
+    private List<String> mTestClasses;
+
+    /** Parse any arguments and prepare to run tests.
+
+        @param arguments The arguments to parse.
+     */
+    @Override
+    public void onCreate(Bundle arguments) {
+        mTargetArgs = new Bundle(arguments);
+        mTargetPackage = arguments.getString(EXTRA_TARGET_PACKAGE);
+        if (mTargetPackage == null) {
+            fail("No target package.");
+            return;
+        }
+        mTargetArgs.remove(EXTRA_TARGET_PACKAGE);
+
+        mTargetClass = arguments.getString(EXTRA_TARGET_CLASS);
+        if (mTargetClass == null) {
+            fail("No target class.");
+            return;
+        }
+        mTargetArgs.remove(EXTRA_TARGET_CLASS);
+
+        mTestClasses = new ArrayList<String>();
+        String testList = arguments.getString(EXTRA_TEST_LIST);
+        if (testList != null) {
+            mTestClasses.addAll(Arrays.asList(COMMA.split(testList)));
+            mTargetArgs.remove(EXTRA_TEST_LIST);
+        }
+
+        String testListFilePath = arguments.getString(EXTRA_TEST_LIST_FILE);
+        if (testListFilePath != null) {
+            File testListFile = new File(Environment.getExternalStorageDirectory(),
+                    testListFilePath);
+            try {
+                BufferedReader testListFileReader =
+                        new BufferedReader(new FileReader(testListFile));
+                String test;
+                while ((test = testListFileReader.readLine()) != null) {
+                    mTestClasses.add(test);
+                }
+                testListFileReader.close();
+            } catch (IOException e) {
+                Log.e(TAG, "Error reading " + testListFile.getAbsolutePath(), e);
+            }
+            mTargetArgs.remove(EXTRA_TEST_LIST_FILE);
+        }
+
+        if (mTestClasses.isEmpty()) {
+            fail("No tests.");
+            return;
+        }
+
+        mDriverThread = new Thread(
+                new Driver(mTargetPackage, mTargetClass, mTargetArgs, mTestClasses));
+
+        start();
+    }
+
+    /** Start running tests. */
+    @Override
+    public void onStart() {
+        super.onStart();
+
+        getContext().startService(new Intent(getContext(), ReportingService.class));
+
+        // Start the driver on its own thread s.t. it can block while the main thread's
+        // Looper receives and handles messages.
+        if (!mDriverStarted) {
+            mDriverThread.start();
+            mDriverStarted = true;
+        }
+    }
+
+    /** Clean up the reporting service. */
+    @Override
+    public void onDestroy() {
+        getContext().stopService(new Intent(getContext(), ReportingService.class));
+        super.onDestroy();
+    }
+
+    private class Driver implements Runnable {
+
+        private static final String TAG = OnDeviceInstrumentationDriver.TAG + ".Driver";
+
+        private Bundle mTargetArgs;
+        private String mTargetClass;
+        private String mTargetPackage;
+        private List<String> mTestClasses;
+        private ReportHandler mHandler;
+
+        public Driver(String targetPackage, String targetClass, Bundle targetArgs,
+                List<String> testClasses) {
+            mTargetPackage = targetPackage;
+            mTargetClass = targetClass;
+            mTargetArgs = targetArgs;
+            mTestClasses = testClasses;
+            mHandler = new ReportHandler(Looper.getMainLooper());
+        }
+
+        private class ReportingServiceConnection implements ServiceConnection {
+
+            private static final String TAG = Driver.TAG + ".ReportingServiceConnection";
+
+            private Messenger mReportingService;
+            private Object mServiceLock = new Object();
+
+            /** Called when a service has been connected.
+
+                @param name The name of the service that has been connected.
+                @param service The IBinder for the service.
+             */
+            @Override
+            public void onServiceConnected(ComponentName name, IBinder service) {
+                synchronized (mServiceLock) {
+                    mReportingService = new Messenger(service);
+                    mServiceLock.notify();
+                }
+            }
+
+            /** Registers a {@link android.os.Messenger} with the
+                {@link org.chromium.test.driver.reporter.ReportingService}.
+
+                This lets the reporting service know that it should relay messages it receives
+                to the provided receiver.
+
+                @param receiver The object to register with the reporting service.
+             */
+            public void registerWithReportingService(Messenger receiver)
+                    throws InterruptedException, RemoteException {
+                synchronized (mServiceLock) {
+                    Log.i(TAG, "acquired service lock");
+                    while (mReportingService == null) {
+                        Log.i(TAG, "waiting for service connection.");
+                        mServiceLock.wait(SERVICE_WAIT_TIMEOUT);
+                    }
+
+                    Log.i(TAG, "reporting service non-null");
+
+                    Message registration = Message.obtain();
+                    registration.what = ReportingService.MSG_REGISTER_RECEIVER;
+                    registration.replyTo = receiver;
+                    mReportingService.send(registration);
+
+                    Log.i(TAG, "sent registration message");
+                }
+            }
+
+            /** Unregisters a {@link android.os.Messenger} with the
+                {@link org.chromium.test.driver.reporter.ReportingService}.
+
+                This lets the reporting service know that it should no longer relay messages it
+                receives to this object.
+
+                @param receiver The object to unregister from the reporting service.
+             */
+            public void unregisterWithReportingService(Messenger receiver)
+                    throws InterruptedException, RemoteException {
+                synchronized (mServiceLock) {
+                    if (mReportingService == null) return;
+
+                    Message registration = Message.obtain();
+                    registration.what = ReportingService.MSG_UNREGISTER_RECEIVER;
+                    registration.replyTo = receiver;
+                    mReportingService.send(registration);
+                }
+            }
+
+            /** Called when a service has disconnected.
+
+                @param name The name of the service that has disconnected.
+             */
+            @Override
+            public void onServiceDisconnected(ComponentName name) {
+                synchronized (mServiceLock) {
+                    mReportingService = null;
+                    mServiceLock.notify();
+                }
+            }
+        }
+
+        private class ReportHandler extends Handler {
+            private static final String TAG = Driver.TAG + ".ReportHandler";
+
+            private final Object mLock = new Object();
+            private final Map<String, ResultsBundleGenerator.TestResult> mFinished =
+                    new HashMap<String, ResultsBundleGenerator.TestResult>();
+
+            public ReportHandler(Looper looper) {
+                super(looper);
+            }
+
+            /** Receive a message.
+
+                This does nothing unless the message is a test report from the
+                {@link org.chromium.test.driver.reporter.ReportingService}.
+
+                @param msg The message to handle.
+             */
+            @Override
+            public void handleMessage(Message msg) {
+                switch (msg.what) {
+                    case ReportingService.MSG_REPORT_TEST_STARTED:
+                    case ReportingService.MSG_REPORT_TEST_PASSED:
+                    case ReportingService.MSG_REPORT_TEST_FAILED:
+                        handleTestStatusMessage(msg);
+                        break;
+                    default:
+                        super.handleMessage(msg);
+                        break;
+                }
+            }
+
+            private void handleTestStatusMessage(Message msg) {
+                String testClass = msg.getData().getString(ReportingService.MSG_DATA_TEST_CLASS);
+                String testMethod = msg.getData().getString(ReportingService.MSG_DATA_TEST_METHOD);
+                String testName = testClass + "#" + testMethod;
+                synchronized (mLock) {
+                    switch (msg.what) {
+                        case ReportingService.MSG_REPORT_TEST_STARTED:
+                            testStarted(testClass, testMethod);
+                            break;
+                        case ReportingService.MSG_REPORT_TEST_PASSED:
+                            mFinished.put(testName, ResultsBundleGenerator.TestResult.PASSED);
+                            testPassed(testClass, testMethod);
+                            mLock.notify();
+                            break;
+                        case ReportingService.MSG_REPORT_TEST_FAILED:
+                            mFinished.put(testName, ResultsBundleGenerator.TestResult.FAILED);
+                            testFailed(testClass, testMethod);
+                            mLock.notify();
+                            break;
+                        default:
+                            throw new IllegalArgumentException(
+                                    "Received unexpected message from reporting service: "
+                                            + msg.what);
+                    }
+                }
+            }
+
+            /** Wait until the test with the given name has been reported as finished.
+
+                @param testName The name of the test to wait for.
+             */
+            public void waitForTestFinished(String testName) throws InterruptedException {
+                synchronized (mLock) {
+                    while (!mFinished.containsKey(testName)) {
+                        Log.i(TAG, "Waiting for " + testName + " to finish.");
+                        mLock.wait(TEST_WAIT_TIMEOUT);
+                    }
+                }
+            }
+
+            /** Get the test results.
+
+                @return A {@link android.os.Bundle} containing the results of all reported tests.
+             */
+            public Bundle getResults() {
+                return new RobotiumBundleGenerator().generate(mFinished);
+            }
+        }
+
+        /** Run the tests. */
+        @Override
+        public void run() {
+            try {
+                ReportingServiceConnection c = new ReportingServiceConnection();
+                if (!getContext().bindService(
+                        new Intent(getContext(), ReportingService.class), c, 0)) {
+                    fail("Reporting service not bound.");
+                    return;
+                }
+
+                Messenger receiver = new Messenger(mHandler);
+                c.registerWithReportingService(receiver);
+
+                for (String t : mTestClasses) {
+                    Intent slaveIntent = new Intent();
+                    slaveIntent.setComponent(new ComponentName(
+                            mTargetPackage, OnDeviceInstrumentationPassenger.class.getName()));
+                    slaveIntent.putExtra(
+                            OnDeviceInstrumentationPassenger.EXTRA_INSTRUMENTATION_PACKAGE,
+                            mTargetPackage);
+                    slaveIntent.putExtra(
+                            OnDeviceInstrumentationPassenger.EXTRA_INSTRUMENTATION_CLASS,
+                            mTargetClass);
+                    slaveIntent.putExtra(OnDeviceInstrumentationPassenger.EXTRA_TEST, t);
+                    slaveIntent.putExtra(OnDeviceInstrumentationPassenger.EXTRA_TARGET_ARGS,
+                            mTargetArgs);
+                    slaveIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+
+                    getContext().startActivity(slaveIntent);
+
+                    mHandler.waitForTestFinished(t);
+                }
+
+                c.unregisterWithReportingService(receiver);
+                getContext().unbindService(c);
+            } catch (RemoteException e) {
+                fail("Error connecting to reporting service.", e);
+                return;
+            } catch (InterruptedException e) {
+                fail("Interrupted while running tests.", e);
+                return;
+            }
+            pass(mHandler.getResults());
+        }
+
+    }
+
+    private void fail(String reason) {
+        Log.e(TAG, reason);
+        failImpl(reason);
+    }
+
+    private void fail(String reason, Exception e) {
+        Log.e(TAG, reason, e);
+        failImpl(reason);
+    }
+
+    private void failImpl(String reason) {
+        Bundle b = new Bundle();
+        b.putString("reason", reason);
+        finish(Activity.RESULT_CANCELED, b);
+    }
+
+    private void pass(Bundle results) {
+        finish(Activity.RESULT_OK, results);
+    }
+
+    private void testStarted(String testClass, String testMethod) {
+        sendTestStatus(InstrumentationTestRunner.REPORT_VALUE_RESULT_START, testClass, testMethod);
+    }
+
+    private void testPassed(String testClass, String testMethod) {
+        sendTestStatus(InstrumentationTestRunner.REPORT_VALUE_RESULT_OK, testClass, testMethod);
+    }
+
+    private void testFailed(String testClass, String testMethod) {
+        sendTestStatus(InstrumentationTestRunner.REPORT_VALUE_RESULT_ERROR, testClass, testMethod);
+    }
+
+    private void sendTestStatus(int status, String testClass, String testMethod) {
+        Bundle statusBundle = new Bundle();
+        statusBundle.putString(InstrumentationTestRunner.REPORT_KEY_NAME_CLASS, testClass);
+        statusBundle.putString(InstrumentationTestRunner.REPORT_KEY_NAME_TEST, testMethod);
+        sendStatus(status, statusBundle);
+    }
+}