upload android base code part3

android/art/tools/bisection_search/bisection_test.py

@@ -0,0 +1,99 @@
+#!/usr/bin/env python3.4
+#
+# Copyright (C) 2016 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Tests for bisection-search module."""
+
+import unittest
+
+from unittest.mock import Mock
+
+from bisection_search import BugSearch
+from bisection_search import Dex2OatWrapperTestable
+from bisection_search import FatalError
+from bisection_search import MANDATORY_PASSES
+
+
+class BisectionTestCase(unittest.TestCase):
+  """BugSearch method test case.
+
+  Integer constants were chosen arbitrarily. They should be large enough and
+  random enough to ensure binary search does nontrivial work.
+
+  Attributes:
+    _METHODS: list of strings, methods compiled by testable
+    _PASSES: list of strings, passes run by testable
+    _FAILING_METHOD: string, name of method which fails in some tests
+    _FAILING_PASS: string, name of pass which fails in some tests
+    _MANDATORY_PASS: string, name of a mandatory pass
+  """
+  _METHODS_COUNT = 1293
+  _PASSES_COUNT = 573
+  _FAILING_METHOD_IDX = 237
+  _FAILING_PASS_IDX = 444
+  _METHODS = ['method_{0}'.format(i) for i in range(_METHODS_COUNT)]
+  _PASSES = ['pass_{0}'.format(i) for i in range(_PASSES_COUNT)]
+  _FAILING_METHOD = _METHODS[_FAILING_METHOD_IDX]
+  _FAILING_PASS = _PASSES[_FAILING_PASS_IDX]
+  _MANDATORY_PASS = MANDATORY_PASSES[0]
+
+  def setUp(self):
+    self.testable_mock = Mock(spec=Dex2OatWrapperTestable)
+    self.testable_mock.GetAllMethods.return_value = self._METHODS
+    self.testable_mock.GetAllPassesForMethod.return_value = self._PASSES
+
+  def MethodFailsForAllPasses(self, compiled_methods, run_passes=None):
+    return self._FAILING_METHOD not in compiled_methods
+
+  def MethodFailsForAPass(self, compiled_methods, run_passes=None):
+    return (self._FAILING_METHOD not in compiled_methods or
+            (run_passes is not None and self._FAILING_PASS not in run_passes))
+
+  def testNeverFails(self):
+    self.testable_mock.Test.return_value = True
+    res = BugSearch(self.testable_mock)
+    self.assertEqual(res, (None, None))
+
+  def testAlwaysFails(self):
+    self.testable_mock.Test.return_value = False
+    with self.assertRaises(FatalError):
+      BugSearch(self.testable_mock)
+
+  def testAMethodFailsForAllPasses(self):
+    self.testable_mock.Test.side_effect = self.MethodFailsForAllPasses
+    res = BugSearch(self.testable_mock)
+    self.assertEqual(res, (self._FAILING_METHOD, None))
+
+  def testAMethodFailsForAPass(self):
+    self.testable_mock.Test.side_effect = self.MethodFailsForAPass
+    res = BugSearch(self.testable_mock)
+    self.assertEqual(res, (self._FAILING_METHOD, self._FAILING_PASS))
+
+  def testMandatoryPassPresent(self):
+    self.testable_mock.GetAllPassesForMethod.return_value += (
+        [self._MANDATORY_PASS])
+    self.testable_mock.Test.side_effect = self.MethodFailsForAPass
+    BugSearch(self.testable_mock)
+    for (ordered_args, keyword_args) in self.testable_mock.Test.call_args_list:
+      passes = None
+      if 'run_passes' in keyword_args:
+        passes = keyword_args['run_passes']
+      if len(ordered_args) > 1:  # run_passes passed as ordered argument
+        passes = ordered_args[1]
+      if passes is not None:
+        self.assertIn(self._MANDATORY_PASS, passes)
+
+if __name__ == '__main__':
+  unittest.main()