Accept all known issues (by file)

Signed-off-by: Niels Thykier <niels@thykier.net>

tests/test_inst_tester.py

@@ -563,4 +563,3 @@ class TestInstTester(unittest.TestCase):
 
 if __name__ == '__main__':
     unittest.main()
-

tests/test_pycodestyle.py

@@ -3,13 +3,60 @@ import unittest
 import pycodestyle
 
 
+EXCEPTIONS_BY_FILE = {
+    'britney.py': 36,
+    'britney2/__init__.py': 2,
+    'britney2/excuse.py': 5,
+    'britney2/hints.py': 8,
+    'britney2/installability/tester.py': 4,
+    'britney2/policies/__init__.py': 2,
+    'britney2/policies/policy.py': 27,
+    'britney2/policies/autopkgtest.py': 9,
+    'tests/mock_swift.py': 2,
+    'tests/__init__.py': 31,
+    'tests/test_autopkgtest.py': 338,
+    'tests/test_policy.py': 31,
+    'tests/test_yaml.py': 1,
+}
+
+
+def _on_error(e):
+    raise e
+
+
+def all_python_files(project_dir):
+
+    for basedir, subdirs, files in os.walk(project_dir, onerror=_on_error):
+        if basedir == project_dir:
+            if '.git' in subdirs:
+                subdirs.remove('.git')
+            if 'doc' in subdirs:
+                subdirs.remove('doc')
+
+        subdirs.sort()
+        files.sort()
+
+        for file in files:
+            if file.endswith('.py'):
+                path = os.path.join(basedir, file)
+                name = path[len(project_dir)+1:]
+                yield path, name
+
+
 class TestCodeFormat(unittest.TestCase):
 
     def test_conformance(self):
         """Test that we conform to PEP-8."""
         project_dir = os.path.dirname(os.path.dirname(__file__))
         codestyle_cfg = os.path.join(project_dir, 'setup.cfg')
-        style = pycodestyle.StyleGuide(config_file=codestyle_cfg)
-        result = style.check_files('.')
-        self.assertEqual(result.total_errors, 0,
-                         "Found code style errors (and warnings).")
+        for python_file, name in all_python_files(project_dir):
+            options = {
+                'config_file': codestyle_cfg,
+            }
+            style = pycodestyle.StyleGuide(**options)
+            result = style.input_file(python_file)
+            limit = EXCEPTIONS_BY_FILE.get(name, 0)
+            # The number are the "unfixed" errors at time of introduction.
+            # As we fix them, this number should be reduced.
+            self.assertEqual(result, limit,
+                             "Found code style errors (and warnings) in %s (%s)." % (name, python_file))