diff options
| -rw-r--r-- | tests/test_plugins.py | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/tests/test_plugins.py b/tests/test_plugins.py index e6c1f17d..27f0d7d2 100644 --- a/tests/test_plugins.py +++ b/tests/test_plugins.py @@ -505,6 +505,58 @@ class GoodPluginTest(FileTracerTest): self.assertEqual(report, expected) self.assertEqual(total, 50) + def test_find_unexecuted(self): + self.make_file("unexecuted_plugin.py", """\ + import os + import coverage.plugin + class Plugin(coverage.CoveragePlugin): + def file_tracer(self, filename): + if filename.endswith("foo.py"): + return MyTracer(filename) + def file_reporter(self, filename): + return MyReporter(filename) + def find_executable_files(self, src_dir): + # Check that src_dir is the right value + files = os.listdir(src_dir) + assert "foo.py" in files + assert "unexecuted_plugin.py" in files + return ["chimera.py"] + + class MyTracer(coverage.plugin.FileTracer): + def __init__(self, filename): + self.filename = filename + def source_filename(self): + return self.filename + def line_number_range(self, frame): + return (999, 999) + + class MyReporter(coverage.FileReporter): + def lines(self): + return set([99, 999, 9999]) + + def coverage_init(reg, options): + reg.add_file_tracer(Plugin()) + """) + self.make_file("foo.py", "a = 1\n") + cov = coverage.Coverage(source=['.']) + cov.set_option("run:plugins", ["unexecuted_plugin"]) + self.start_import_stop(cov, "foo") + + # The file we executed claims to have run line 999. + _, statements, missing, _ = cov.analysis("foo.py") + self.assertEqual(statements, [99, 999, 9999]) + self.assertEqual(missing, [99, 9999]) + + # The completely missing file is in the results. + _, statements, missing, _ = cov.analysis("chimera.py") + self.assertEqual(statements, [99, 999, 9999]) + self.assertEqual(missing, [99, 999, 9999]) + + # But completely new filenames are not in the results. + self.assertEqual(len(cov.get_data().measured_files()), 3) + with self.assertRaises(CoverageException): + cov.analysis("fictional.py") + class BadPluginTest(FileTracerTest): """Test error handling around plugins.""" |