[Android] Add a custom pylintrc for build/android/.

build/android/pylib/perf/surface_stats_collector_unittest.py

-# Copyright 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.
-
-"""Unittests for SurfaceStatsCollector."""
-# pylint: disable=W0212
-
-import unittest
-
-from pylib.perf.surface_stats_collector import SurfaceStatsCollector
-
-
-class TestSurfaceStatsCollector(unittest.TestCase):
-  @staticmethod
-  def _CreateUniformTimestamps(base, num, delta):
-    return [base + i * delta for i in range(1, num + 1)]
-
-  @staticmethod
-  def _CreateDictionaryFromResults(results):
-    dictionary = {}
-    for result in results:
-      dictionary[result.name] = result
-    return dictionary
-
-  def setUp(self):
-    self.refresh_period = 0.1
-
-  def testOneFrameDelta(self):
-    timestamps = self._CreateUniformTimestamps(0, 10, self.refresh_period)
-    results = self._CreateDictionaryFromResults(
-                  SurfaceStatsCollector._CalculateResults(
-                      self.refresh_period, timestamps, ''))
-
-    self.assertEquals(results['avg_surface_fps'].value,
-                      int(round(1 / self.refresh_period)))
-    self.assertEquals(results['jank_count'].value, 0)
-    self.assertEquals(results['max_frame_delay'].value, 1)
-    self.assertEquals(len(results['frame_lengths'].value), len(timestamps) - 1)
-
-  def testAllFramesTooShort(self):
-    timestamps = self._CreateUniformTimestamps(0, 10, self.refresh_period / 100)
-    self.assertRaises(Exception,
-                      SurfaceStatsCollector._CalculateResults,
-                      [self.refresh_period, timestamps, ''])
-
-  def testSomeFramesTooShort(self):
-    timestamps = self._CreateUniformTimestamps(0, 5, self.refresh_period)
-    # The following timestamps should be skipped.
-    timestamps += self._CreateUniformTimestamps(timestamps[4],
-                                                5,
-                                                self.refresh_period / 100)
-    timestamps += self._CreateUniformTimestamps(timestamps[4],
-                                                5,
-                                                self.refresh_period)
-
-    results = self._CreateDictionaryFromResults(
-                  SurfaceStatsCollector._CalculateResults(
-                      self.refresh_period, timestamps, ''))
-
-    self.assertEquals(len(results['frame_lengths'].value), 9)
-
-
-if __name__ == '__main__':
-  unittest.main()