Workaround IronPython bug in utils.Matcher

pekkaklarck · pekkaklarck · commit 82a420182ebf · 2018-10-26T23:15:06.000+03:00
The underlying IronPython bug is this: IronLanguages/ironpython2#515 We started seeing the problem in our acceptance tests when executed on IronPython after taking `fnmatch.translate` into use when robotframework#2471 was implemented. The problem doesn't occur in any of our stable release so no need to create an issue about it.
diff --git a/src/robot/utils/match.py b/src/robot/utils/match.py
@@ -19,7 +19,7 @@
 
 from .compat import py2to3
 from .normalizing import normalize
-from .platform import PY3
+from .platform import IRONPYTHON, PY3
 from .robottypes import is_string
 
 
@@ -44,6 +44,9 @@ def __init__(self, pattern, ignore=(), caseless=True, spaceless=True,
     def _compile(self, pattern, regexp=False):
         if not regexp:
             pattern = fnmatch.translate(pattern)
+            # https://github.com/IronLanguages/ironpython2/issues/515
+            if IRONPYTHON and "\\'" in pattern:
+                pattern = pattern.replace("\\'", "'")
         return re.compile(pattern, re.DOTALL)
 
     def match(self, string):
diff --git a/utest/utils/test_match.py b/utest/utils/test_match.py
@@ -137,6 +137,12 @@ def test_spaceless(self):
             assert Matcher('f*bar').match(text)
             assert not Matcher('f*bar', spaceless=False).match(text)
 
+    def test_ipy_bug_workaround(self):
+        # https://github.com/IronLanguages/ironpython2/issues/515
+        matcher = Matcher("'12345678901234567890'")
+        assert matcher.match("'12345678901234567890'")
+        assert not matcher.match("'xxx'")
+
     def _matches(self, string, pattern, **config):
         assert Matcher(pattern, **config).match(string), pattern
 
