diff options
Diffstat (limited to 'tests/test_concurrency.py')
| -rw-r--r-- | tests/test_concurrency.py | 44 |
1 files changed, 40 insertions, 4 deletions
diff --git a/tests/test_concurrency.py b/tests/test_concurrency.py index 36034438..d438684e 100644 --- a/tests/test_concurrency.py +++ b/tests/test_concurrency.py @@ -324,7 +324,7 @@ MULTI_CODE = """ ret = work(*args) return os.getpid(), ret - if __name__ == "__main__": + if __name__ == "__main__": # pragma: no branch # This if is on a single line so we can get 100% coverage # even if we have no arguments. if len(sys.argv) > 1: multiprocessing.set_start_method(sys.argv[1]) @@ -372,12 +372,12 @@ class MultiprocessingTest(CoverageTest): else: self.assertEqual(out.rstrip(), expected_out) - self.run_command("coverage combine") + out = self.run_command("coverage combine") + self.assertEqual(out, "") out = self.run_command("coverage report -m") last_line = self.squeezed_lines(out)[-1] - expected_report = "multi.py {lines} 0 100%".format(lines=line_count(code)) - self.assertEqual(last_line, expected_report) + self.assertRegex(last_line, r"multi.py \d+ 0 100%") def test_multiprocessing(self): nprocs = 3 @@ -398,3 +398,39 @@ class MultiprocessingTest(CoverageTest): self.try_multiprocessing_code( code, expected_out, eventlet, concurrency="multiprocessing,eventlet" ) + + def try_multiprocessing_code_with_branching(self, code, expected_out): + """Run code using multiprocessing, it should produce `expected_out`.""" + self.make_file("multi.py", code) + self.make_file("multi.rc", """\ + [run] + concurrency = multiprocessing + branch = True + """) + + if env.PYVERSION >= (3, 4): + start_methods = ['fork', 'spawn'] + else: + start_methods = [''] + + for start_method in start_methods: + if start_method and start_method not in multiprocessing.get_all_start_methods(): + continue + + out = self.run_command("coverage run --rcfile=multi.rc multi.py %s" % (start_method,)) + self.assertEqual(out.rstrip(), expected_out) + + out = self.run_command("coverage combine") + self.assertEqual(out, "") + out = self.run_command("coverage report -m") + + last_line = self.squeezed_lines(out)[-1] + self.assertRegex(last_line, r"multi.py \d+ 0 \d+ 0 100%") + + def test_multiprocessing_with_branching(self): + nprocs = 3 + upto = 30 + code = (SQUARE_OR_CUBE_WORK + MULTI_CODE).format(NPROCS=nprocs, UPTO=upto) + total = sum(x*x if x%2 else x*x*x for x in range(upto)) + expected_out = "{nprocs} pids, total = {total}".format(nprocs=nprocs, total=total) + self.try_multiprocessing_code_with_branching(code, expected_out) |