Open Source Monorail

appengine/monorail/framework/test/profiler_test.py

+# Copyright 2016 The Chromium Authors. All rights reserved.
+# Use of this source code is govered by a BSD-style
+# license that can be found in the LICENSE file or at
+# https://developers.google.com/open-source/licenses/bsd
+
+"""Test for monorail.framework.profiler."""
+
+import unittest
+
+from framework import profiler
+
+
+class ProfilerTest(unittest.TestCase):
+
+  def testTopLevelPhase(self):
+    prof = profiler.Profiler()
+    self.assertEquals(prof.current_phase.name, 'overall profile')
+    self.assertEquals(prof.current_phase.parent, None)
+    self.assertEquals(prof.current_phase, prof.top_phase)
+    self.assertEquals(prof.next_color, 0)
+
+  def testSinglePhase(self):
+    prof = profiler.Profiler()
+    self.assertEquals(prof.current_phase.name, 'overall profile')
+    with prof.Phase('test'):
+      self.assertEquals(prof.current_phase.name, 'test')
+      self.assertEquals(prof.current_phase.parent.name, 'overall profile')
+    self.assertEquals(prof.current_phase.name, 'overall profile')
+    self.assertEquals(prof.next_color, 1)
+
+  def testSubphaseExecption(self):
+    prof = profiler.Profiler()
+    try:
+      with prof.Phase('foo'):
+        with prof.Phase('bar'):
+          pass
+        with prof.Phase('baz'):
+          raise Exception('whoops')
+    except Exception as e:
+      self.assertEquals(e.message, 'whoops')
+    finally:
+      self.assertEquals(prof.current_phase.name, 'overall profile')
+      self.assertEquals(
+          prof.top_phase.subphases[0].subphases[1].name, 'baz')
+
+
+if __name__ == '__main__':
+  unittest.main()