diff options
Diffstat (limited to 'tests/test_api.py')
| -rw-r--r-- | tests/test_api.py | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/tests/test_api.py b/tests/test_api.py index 27092098..9feea5bf 100644 --- a/tests/test_api.py +++ b/tests/test_api.py @@ -293,8 +293,8 @@ class ApiTest(CoverageTest): self.check_code1_code2(cov) - def make_corrupt_data_files(self): - """Make some good and some bad data files.""" + def make_good_data_files(self): + """Make some good data files.""" self.make_code1_code2() cov = coverage.Coverage(data_suffix=True) self.start_import_stop(cov, "code1") @@ -304,12 +304,15 @@ class ApiTest(CoverageTest): self.start_import_stop(cov, "code2") cov.save() + def make_bad_data_file(self): + """Make one bad data file.""" self.make_file(".coverage.foo", """La la la, this isn't coverage data!""") def test_combining_corrupt_data(self): # If you combine a corrupt data file, then you will get a warning, # and the file will remain. - self.make_corrupt_data_files() + self.make_good_data_files() + self.make_bad_data_file() cov = coverage.Coverage() warning_regex = ( r"Couldn't read data from '.*\.coverage\.foo': " @@ -324,6 +327,27 @@ class ApiTest(CoverageTest): # The bad file still exists. self.assert_exists(".coverage.foo") + def test_combining_twice(self): + self.make_good_data_files() + cov1 = coverage.Coverage() + cov1.combine() + cov1.save() + self.check_code1_code2(cov1) + + cov2 = coverage.Coverage() + with self.assertRaisesRegex(CoverageException, r"No data to combine"): + cov2.combine(strict=True) + + cov3 = coverage.Coverage() + cov3.combine() + # Now the data is empty! + _, statements, missing, _ = cov3.analysis("code1.py") + self.assertEqual(statements, [1]) + self.assertEqual(missing, [1]) + _, statements, missing, _ = cov3.analysis("code2.py") + self.assertEqual(statements, [1, 2]) + self.assertEqual(missing, [1, 2]) + class NamespaceModuleTest(CoverageTest): """Test PEP-420 namespace modules.""" @@ -344,7 +368,6 @@ class NamespaceModuleTest(CoverageTest): cov.analysis(sys.modules['namespace']) - class UsingModulesMixin(object): """A mixin for importing modules from test/modules and test/moremodules.""" |