Create the first tests for the pydocstyle finder.

test/test_normalizer_issues_files.py

@@ -0,0 +1,44 @@
+"""
+To easily verify if our normalizer raises the right error codes, just use the
+tests of pydocstyle.
+"""
+
+import re
+from textwrap import dedent
+
+import parso
+
+
+def collect_errors(code):
+    for line_nr, line in enumerate(code.splitlines(), 1):
+        match = re.match(r'(\s*)#: (.*)$', line)
+        if match is not None:
+            codes = match.group(2)
+            for code in codes.split():
+                column = len(match.group(1))
+                if ':' in code:
+                    code, _, add_indent = code.partition(':')
+                    column += int(add_indent)
+
+                yield "%s@(%s,%s)" % (code, line_nr + 1, column)
+
+
+def test_normalizer_issue(normalizer_issue_file):
+    with open(normalizer_issue_file.path) as f:
+        code = f.read()
+
+    desired = list(collect_errors(code))
+
+    module = parso.parse(code)
+    issues = module._get_normalizer_issues()
+
+    i = set("E%s@(%s,%s)" % (i.code, i.start_pos[0], i.start_pos[1]) for i in issues)
+    d = set(desired)
+    assert i == d, dedent("""
+        Test %r failed (%s of %s passed).
+        not raised  = %s
+        unspecified = %s
+        """) % (
+            normalizer_issue_file.name, len(i & d), len(d),
+            sorted(d - i), sorted(i - d)
+        )