145 lines
6.4 KiB
Python
145 lines
6.4 KiB
Python
# Copyright (C) 2020 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Unit tests for external updater reviewers."""
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from typing import List, Mapping, Set
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import unittest
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import reviewers
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class ExternalUpdaterReviewersTest(unittest.TestCase):
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"""Unit tests for external updater reviewers."""
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def setUp(self):
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super().setUp()
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# save constants in reviewers
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self.saved_proj_reviewers = reviewers.PROJ_REVIEWERS
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self.saved_rust_reviewers = reviewers.RUST_REVIEWERS
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self.saved_rust_reviewer_list = reviewers.RUST_REVIEWER_LIST
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self.saved_num_rust_projects = reviewers.NUM_RUST_PROJECTS
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self.saved_rust_crate_owners = reviewers.RUST_CRATE_OWNERS
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def tearDown(self):
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super().tearDown()
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# restore constants in reviewers
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reviewers.PROJ_REVIEWERS = self.saved_proj_reviewers
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reviewers.RUST_REVIEWERS = self.saved_rust_reviewers
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reviewers.RUST_REVIEWER_LIST = self.saved_rust_reviewer_list
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reviewers.NUM_RUST_PROJECTS = self.saved_num_rust_projects
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reviewers.RUST_CRATE_OWNERS = self.saved_rust_crate_owners
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# pylint: disable=no-self-use
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def _collect_reviewers(self, num_runs, proj_path):
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counters = {}
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for _ in range(num_runs):
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name = reviewers.find_reviewers(proj_path)
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if name in counters:
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counters[name] += 1
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else:
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counters[name] = 1
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return counters
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def test_reviewers_types(self):
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"""Check the types of PROJ_REVIEWERS and RUST_REVIEWERS."""
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# Check type of PROJ_REVIEWERS
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self.assertIsInstance(reviewers.PROJ_REVIEWERS, Mapping)
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for key, value in reviewers.PROJ_REVIEWERS.items():
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self.assertIsInstance(key, str)
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# pylint: disable=isinstance-second-argument-not-valid-type
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# https://github.com/PyCQA/pylint/issues/3507
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if isinstance(value, (List, Set)):
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for x in value:
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self.assertIsInstance(x, str)
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else:
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self.assertIsInstance(value, str)
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# Check element types of the reviewers list and map.
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self.assertIsInstance(reviewers.RUST_REVIEWERS, Mapping)
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for (name, quota) in reviewers.RUST_REVIEWERS.items():
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self.assertIsInstance(name, str)
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self.assertIsInstance(quota, int)
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def test_reviewers_constants(self):
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"""Check the constants associated to the reviewers."""
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# There should be enough people in the reviewers pool.
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self.assertGreaterEqual(len(reviewers.RUST_REVIEWERS), 3)
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# The NUM_RUST_PROJECTS should not be too small.
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self.assertGreaterEqual(reviewers.NUM_RUST_PROJECTS, 50)
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self.assertGreaterEqual(reviewers.NUM_RUST_PROJECTS,
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len(reviewers.RUST_CRATE_OWNERS))
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# Assume no project reviewers and recreate RUST_REVIEWER_LIST
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reviewers.PROJ_REVIEWERS = {}
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reviewers.RUST_REVIEWER_LIST = reviewers.create_rust_reviewer_list()
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sum_projects = sum(reviewers.RUST_REVIEWERS.values())
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self.assertEqual(sum_projects, len(reviewers.RUST_REVIEWER_LIST))
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self.assertGreaterEqual(sum_projects, reviewers.NUM_RUST_PROJECTS)
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def test_reviewers_randomness(self):
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"""Check random selection of reviewers."""
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# This might fail when the random.choice function is extremely unfair.
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# With N * 20 tries, each reviewer should be picked at least twice.
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# Assume no project reviewers and recreate RUST_REVIEWER_LIST
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reviewers.PROJ_REVIEWERS = {}
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reviewers.RUST_REVIEWER_LIST = reviewers.create_rust_reviewer_list()
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num_tries = len(reviewers.RUST_REVIEWERS) * 20
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counters = self._collect_reviewers(num_tries, "rust/crates/libc")
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self.assertEqual(len(counters), len(reviewers.RUST_REVIEWERS))
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for n in counters.values():
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self.assertGreaterEqual(n, 5)
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self.assertEqual(sum(counters.values()), num_tries)
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def test_project_reviewers(self):
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"""For specific projects, select only the specified reviewers."""
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reviewers.PROJ_REVIEWERS = {
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"rust/crates/p1": "x@g.com",
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"rust/crates/p_any": ["x@g.com", "y@g.com"],
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"rust/crates/p_all": {"z@g", "x@g.com", "y@g.com"},
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}
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counters = self._collect_reviewers(20, "external/rust/crates/p1")
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self.assertEqual(len(counters), 1)
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self.assertTrue(counters["r=x@g.com"], 20)
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counters = self._collect_reviewers(20, "external/rust/crates/p_any")
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self.assertEqual(len(counters), 2)
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self.assertGreater(counters["r=x@g.com"], 2)
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self.assertGreater(counters["r=y@g.com"], 2)
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self.assertTrue(counters["r=x@g.com"] + counters["r=y@g.com"], 20)
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counters = self._collect_reviewers(20, "external/rust/crates/p_all")
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# {x, y, z} reviewers should be sorted
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self.assertEqual(counters["r=x@g.com,r=y@g.com,r=z@g"], 20)
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def test_weighted_reviewers(self):
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"""Test create_rust_reviewer_list."""
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reviewers.PROJ_REVIEWERS = {
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"any_p1": "x@g", # 1 for x@g
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"any_p2": {"xyz", "x@g"}, # 1 for x@g, xyz is not a rust reviewer
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"any_p3": {"abc", "x@g"}, # 0.5 for "abc" and "x@g"
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}
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reviewers.RUST_REVIEWERS = {
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"x@g": 5, # ceil(5 - 2.5) = 3
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"abc": 2, # ceil(2 - 0.5) = 2
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}
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reviewer_list = reviewers.create_rust_reviewer_list()
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self.assertEqual(reviewer_list, ["x@g", "x@g", "x@g", "abc", "abc"])
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# Error case: if nobody has project quota, reset everyone to 1.
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reviewers.RUST_REVIEWERS = {
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"x@g": 1, # ceil(1 - 2.5) = -1
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"abc": 0, # ceil(0 - 0.5) = 0
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}
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reviewer_list = reviewers.create_rust_reviewer_list()
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self.assertEqual(reviewer_list, ["x@g", "abc"]) # everyone got 1
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if __name__ == "__main__":
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unittest.main(verbosity=2)
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