Upstream oodles of Chrome for Android code into Chromium.

chrome/android/javatests/src/org/chromium/chrome/browser/download/DownloadTestBase.java

Index: chrome/android/javatests/src/org/chromium/chrome/browser/download/DownloadTestBase.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/download/DownloadTestBase.java b/chrome/android/javatests/src/org/chromium/chrome/browser/download/DownloadTestBase.java
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@@ -0,0 +1,271 @@
+// 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.chrome.browser.download;
+
+import android.app.DownloadManager;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.database.Cursor;
+import android.os.Environment;
+import android.os.Handler;
+import android.util.Log;
+
+import org.chromium.base.ThreadUtils;
+import org.chromium.base.annotations.SuppressFBWarnings;
+import org.chromium.chrome.browser.ChromeActivity;
+import org.chromium.chrome.test.ChromeActivityTestCaseBase;
+import org.chromium.content.browser.DownloadController;
+import org.chromium.content.browser.DownloadInfo;
+import org.chromium.content.browser.test.util.ApplicationUtils;
+import org.chromium.content.browser.test.util.CallbackHelper;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+
+/**
+ * Base case for tests that need to download a file.
+ *
+ * This has to be a base class because some classes (like BrowserEvent) are exposed only
+ * to children of ChromeActivityTestCaseBase. It is a very broken approach to sharing
+ * but the only other option is to refactor the ChromeActivityTestCaseBase implementation
+ * and all of our test cases.
+ *
+ */
+public abstract class DownloadTestBase extends ChromeActivityTestCaseBase<ChromeActivity> {
+    private static final String TAG = "DownloadTestBase";
+    private static final File DOWNLOAD_DIRECTORY =
+            Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
+    public static final long UPDATE_DELAY_MILLIS = 1000;
+
+    public DownloadTestBase() {
+        super(ChromeActivity.class);
+    }
+
+    /**
+     * Check the download exists in DownloadManager by matching the local file
+     * path.
+     *
+     * @param fileName Expected file name. Path is built by appending filename to
+     * the system downloads path.
+     *
+     * @param expectedContents Expected contents of the file, or null if the contents should not be
+     * checked.
+     */
+    public boolean hasDownload(String fileName, String expectedContents) throws IOException {
+        File downloadedFile = new File(DOWNLOAD_DIRECTORY, fileName);
+        if (!downloadedFile.exists()) {
+            Log.d(TAG, "The file " + fileName + " does not exist");
+            return false;
+        }
+
+        String fullPath = downloadedFile.getAbsolutePath();
+
+        DownloadManager manager =
+                (DownloadManager) getActivity().getSystemService(Context.DOWNLOAD_SERVICE);
+        Cursor cursor = manager.query(new DownloadManager.Query());
+
+        cursor.moveToFirst();
+        boolean result = false;
+        while (!cursor.isAfterLast()) {
+            if (fullPath.equals(getPathFromCursor(cursor))) {
+                if (expectedContents != null) {
+                    FileInputStream stream = new FileInputStream(new File(fullPath));
+                    byte[] data = new byte[expectedContents.getBytes().length];
+                    try {
+                        assertEquals(stream.read(data), data.length);
+                        String contents = new String(data);
+                        assertEquals(expectedContents, contents);
+                    } finally {
+                        stream.close();
+                    }
+                }
+                result = true;
+                break;
+            }
+            cursor.moveToNext();
+        }
+        cursor.close();
+        return result;
+    }
+
+    /**
+     * Check the last download matches the given name and exists in DownloadManager.
+     */
+    public void checkLastDownload(String fileName) throws IOException {
+        String lastDownload = getLastDownloadFile();
+        assertTrue(isSameDownloadFile(fileName, lastDownload));
+        assertTrue(hasDownload(lastDownload, null));
+    }
+
+    /**
+     * Delete all download entries in DownloadManager and delete the corresponding files.
+     */
+    @SuppressFBWarnings("RV_RETURN_VALUE_IGNORED_BAD_PRACTICE")
+    private void cleanUpAllDownloads() {
+        DownloadManager manager =
+                (DownloadManager) getActivity().getSystemService(Context.DOWNLOAD_SERVICE);
+        Cursor cursor = manager.query(new DownloadManager.Query());
+        int idColumnIndex = cursor.getColumnIndexOrThrow(DownloadManager.COLUMN_ID);
+        cursor.moveToFirst();
+        while (!cursor.isAfterLast()) {
+            long id = cursor.getLong(idColumnIndex);
+            String fileName = getPathFromCursor(cursor);
+            manager.remove(id);
+
+            if (fileName != null) {  // Somehow fileName can be null for some entries.
+                // manager.remove does not remove downloaded file.
+                File localFile = new File(fileName);
+                if (localFile.exists()) {
+                    localFile.delete();
+                }
+            }
+
+            cursor.moveToNext();
+        }
+        cursor.close();
+    }
+
+    /**
+     * Retrieve the path of the downloaded file from a DownloadManager cursor.
+     */
+    private String getPathFromCursor(Cursor cursor) {
+        int columnId = cursor.getColumnIndex("local_filename");
+        return cursor.getString(columnId);
+    }
+
+    private String getPathForDownload(long downloadId) {
+        DownloadManager manager =
+                (DownloadManager) getActivity().getSystemService(Context.DOWNLOAD_SERVICE);
+        DownloadManager.Query query = new DownloadManager.Query();
+        query.setFilterById(downloadId);
+        Cursor cursor = null;
+        try {
+            cursor = manager.query(query);
+            if (!cursor.moveToFirst()) {
+                return null;
+            }
+            return getPathFromCursor(cursor);
+        } finally {
+            if (cursor != null) cursor.close();
+        }
+    }
+
+    private CallbackHelper mHttpGetDownloadFinished;
+    private String mLastDownloadFilePath;
+    private CallbackHelper mHttpDownloadFinished;
+    private DownloadManagerService mSavedDownloadManagerService;
+
+    protected String getLastDownloadFile() {
+        return new File(mLastDownloadFilePath).getName();
+    }
+
+    // The Android DownloadManager sometimes appends a number to a file name when it downloads it
+    // ex: google.png becomes google-23.png
+    // This happens even when there is no other prior download with that name, it could be a bug.
+    // TODO(jcivelli): investigate if we can isolate that behavior and file a bug to Android.
+    protected boolean isSameDownloadFile(String originalName, String downloadName) {
+        String fileName = originalName;
+        String extension = "";
+        int dotIndex = originalName.lastIndexOf('.');
+        if (dotIndex != -1 && dotIndex < originalName.length()) {
+            fileName = originalName.substring(0, dotIndex);
+            extension = originalName.substring(dotIndex);  // We include the '.'
+        }
+        return downloadName.startsWith(fileName) && downloadName.endsWith(extension);
+    }
+
+    public boolean waitForGetDownloadToFinish() throws InterruptedException {
+        mLastDownloadFilePath = null;
+        boolean eventReceived = true;
+        try {
+            mHttpGetDownloadFinished.waitForCallback(0);
+        } catch (TimeoutException e) {
+            eventReceived = false;
+        }
+        mHttpGetDownloadFinished = new CallbackHelper();
+        return eventReceived;
+    }
+
+    public boolean waitForChromeDownloadToFinish() throws InterruptedException {
+        boolean eventReceived = true;
+        try {
+            mHttpDownloadFinished.waitForCallback(0, 1, 5, TimeUnit.SECONDS);
+        } catch (TimeoutException e) {
+            eventReceived = false;
+        }
+        mHttpDownloadFinished = new CallbackHelper();
+        return eventReceived;
+    }
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+        cleanUpAllDownloads();
+
+        try {
+            assertTrue(ApplicationUtils.waitForLibraryDependencies(getInstrumentation()));
+        } catch (InterruptedException e) {
+            fail("Library dependencies were never initialized.");
+        }
+        final Context context = getInstrumentation().getTargetContext().getApplicationContext();
+
+        ThreadUtils.runOnUiThreadBlocking(new Runnable() {
+            @Override
+            public void run() {
+                mSavedDownloadManagerService = DownloadManagerService.setDownloadManagerService(
+                        new DownloadManagerService(context,
+                                new SystemDownloadNotifier(context), new Handler(),
+                                UPDATE_DELAY_MILLIS) {
+                            @Override
+                            protected void broadcastDownloadSuccessful(DownloadInfo downloadInfo) {
+                                super.broadcastDownloadSuccessful(downloadInfo);
+                                mLastDownloadFilePath = downloadInfo.getFilePath();
+                                mHttpDownloadFinished.notifyCalled();
+                            }
+                        });
+                DownloadController.setDownloadNotificationService(
+                        DownloadManagerService.getDownloadManagerService(context));
+            }
+        });
+
+        mHttpGetDownloadFinished = new CallbackHelper();
+        mHttpDownloadFinished = new CallbackHelper();
+
+        context.registerReceiver(new BroadcastReceiver() {
+            @Override
+            public void onReceive(Context context, Intent intent) {
+                String action = intent.getAction();
+                if (DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals(action)) {
+                    // The name of the download does not seem to always be what we asked for
+                    // (ex: google.png becomes google-23.png). Probably a bug in the Android
+                    // DownloadManager.  Make sure we always retrieve the actual download name.
+                    long downloadId = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1);
+                    assertTrue("No download id with download finished intent", downloadId != -1);
+                    mLastDownloadFilePath = getPathForDownload(downloadId);
+                    assertNotNull("Download path not found", mLastDownloadFilePath);
+                    mHttpGetDownloadFinished.notifyCalled();
+                }
+            }
+        }, new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE));
+    }
+
+    @Override
+    protected void tearDown() throws Exception {
+        cleanUpAllDownloads();
+        ThreadUtils.runOnUiThreadBlocking(new Runnable() {
+            @Override
+            public void run() {
+                DownloadManagerService.setDownloadManagerService(mSavedDownloadManagerService);
+                DownloadController.setDownloadNotificationService(mSavedDownloadManagerService);
+            }
+        });
+        super.tearDown();
+    }
+}