InspectorTimeline improvements

tools/telemetry/telemetry/timeline_event_unittest.py

+# Copyright (c) 2013 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 unittest
+
+from telemetry.timeline_event import TimelineEvent
+
+class TimelineEventTest(unittest.TestCase):
+  def testChildrenLogic(self):
+    # [      top          ]
+    #   [ a  ]    [  b  ]
+    #    [x]
+    top = TimelineEvent('top', 0, 10)
+    a = TimelineEvent('a', 1, 2)
+    x = TimelineEvent('x', 1.5, 0.25)
+    b = TimelineEvent('b', 5, 2)
+    top.children.extend([a, b])
+    a.children.append(x)
+
+    all_children = top.GetAllChildrenRecursive(include_self=True)
+    self.assertEquals([top, a, x, b], all_children)
+
+    self.assertEquals(x.self_time_ms, 0.25)
+    self.assertEquals(a.self_time_ms, 1.75) # 2 - 0.25
+    self.assertEquals(top.self_time_ms, 6) # 10 - 2 -2
+