diff options
Diffstat (limited to 'tests/test_process.py')
| -rw-r--r-- | tests/test_process.py | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/tests/test_process.py b/tests/test_process.py index 42a6d983..18564cb8 100644 --- a/tests/test_process.py +++ b/tests/test_process.py @@ -144,6 +144,40 @@ class ProcessTest(CoverageTest): data.read_file(".coverage") self.assertEqual(data.line_counts()['b_or_c.py'], 7) + def test_combine_no_usable_files(self): + # https://bitbucket.org/ned/coveragepy/issues/629/multiple-use-of-combine-leads-to-empty + self.make_b_or_c_py() + out = self.run_command("coverage run b_or_c.py b") + self.assertEqual(out, 'done\n') + self.assert_exists(".coverage") + self.assertEqual(self.number_of_data_files(), 1) + + # Make bogus data files. + self.make_file(".coverage.bad1", "This isn't a coverage data file.") + self.make_file(".coverage.bad2", "This isn't a coverage data file.") + + # Combine the parallel coverage data files into .coverage, but nothing is readable. + status, out = self.run_command_status("coverage combine") + self.assertEqual(status, 1) + + for n in "12": + self.assert_exists(".coverage.bad{0}".format(n)) + warning_regex = ( + r"Coverage.py warning: Couldn't read data from '.*\.coverage\.bad{0}': " + r"CoverageException: Doesn't seem to be a coverage\.py data file".format(n) + ) + self.assertRegex(out, warning_regex) + self.assertRegex(out, r"No usable data files") + + # After combining, we should have a main file and two parallel files. + self.assertEqual(self.number_of_data_files(), 3) + + # Read the coverage file and see that b_or_c.py has 6 lines + # executed (we only did b, not c). + data = coverage.CoverageData() + data.read_file(".coverage") + self.assertEqual(data.line_counts()['b_or_c.py'], 6) + def test_combine_parallel_data_in_two_steps(self): self.make_b_or_c_py() |