Fixes #276: correct regular expression for multi_line_violation_regex

diff_cover/violationsreporters/violations_reporter.py

@@ -402,7 +402,7 @@ def __init__(self):
         # Match lines of the form:
         # path/to/file.py:123: [C0111] Missing docstring
         # path/to/file.py:456: [C0111, Foo.bar] Missing docstring
-        self.multi_line_violation_regex = re.compile(r"==(\w|.+):(.*)")
+        self.multi_line_violation_regex = re.compile(r"==((?:\w|\.)+?):\[?(\d+)")
         self.dupe_code_violation_regex = re.compile(r"Similar lines in (\d+) files")
 
     def _process_dupe_code_violation(self, lines, current_line, message):

tests/test_violations_reporter.py

@@ -1279,6 +1279,11 @@ def test_quality(self, process_patcher):
             import json
             import logging
             import random
+            file2.py:170: [R0801] Similar lines in 2 files
+            ==file1:[170:172]
+            ==student.views:[4:6]
+            import foo
+            import bar
             path/to/file2.py:100: [W0212, openid_login_complete] Access to a protected member
             """
                 )
@@ -1300,6 +1305,7 @@ def test_quality(self, process_patcher):
             ),
             Violation(149, "C0324: Foo.__dict__: Comma not followed by a space"),
             Violation(162, "R0801: Similar lines in 2 files"),
+            Violation(170, "R0801: Similar lines in 2 files"),
             Violation(113, "W0613: cache_relation.clear_pk: Unused argument 'cls'"),
         ]