Smoke test for tracing infrastructure in PyAuto

chrome/test/functional/tracing/tab_tracker.py

Index: chrome/test/functional/tracing/tab_tracker.py
diff --git a/chrome/test/functional/tracing/tab_tracker.py b/chrome/test/functional/tracing/tab_tracker.py
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+++ b/chrome/test/functional/tracing/tab_tracker.py
@@ -0,0 +1,41 @@
+# Copyright (c) 2011 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.
+
+import uuid
+
+# The TabTracker class allows the creation of tabs whose indices can be

[Nirnimesh, 2012/07/30 18:57:19]

This sounds like a docstring. Move inside the class as docstring.

+# determined even after lower indexed tabs have been closed, therefore changing
+# that tab's index.
+class TabTracker:
+  def __init__(self, browser, visible = False):

[Nirnimesh, 2012/07/30 18:57:19]

remove parents around =

[Nirnimesh, 2012/07/30 18:58:03]

err.. parents -> space

+    # A binary search tree would be faster, but this is easier to write.
+    # If this needs to become faster, understand that the important operations
+    # here are append, arbitrary deletion and searching.
+    self._uuids = [None]
+    self._window_idx = browser.GetBrowserWindowCount()
+    self._browser = browser
+    browser.OpenNewBrowserWindow(visible)
+    # We leave the 0'th tab empty to have something to close on __del__
+
+  def __del__(self):
+    self._browser.CloseBrowserWindow(self._window_idx)
+
+  def createTab(self, url="about:blank"):

[Nirnimesh, 2012/07/30 18:57:19]

createTab -> CreateTab

Please repeat for all methods.

[Nirnimesh, 2012/07/30 18:57:19]

use single quote char ' instead of " for consistency

[Nirnimesh, 2012/07/30 18:57:19]

Add docstring, with an Args: section.

+    self._browser.AppendTab(url, self._window_idx)
+    # We use uuids here rather than a monotonic integer to prevent confusion
+    # with the tab index.
+    tab_uuid = uuid.uuid4()
+    self._uuids.append(tab_uuid)
+    return tab_uuid
+
+  def releaseTab(self, tab_uuid):
+    idx = self.getTabIndex(tab_uuid)
+    self._browser.GetBrowserWindow(self._window_idx).GetTab(idx).Close()
+    del self._uuids[idx]
+
+  def getTabIndex(self, tab_uuid):
+    return self._uuids.index(tab_uuid)
+
+  def getWindowIndex(self):
+    return self._window_idx