tests/extmod: Add test for ure regexes leading to infinite recursion.

pfalcon · pfalcon · commit 8e0b9f495b19 · 2017-10-03T00:24:32.000+03:00
These now should be caught properly and lead to RuntimeError instead of
crash.
diff --git a/tests/extmod/ure_stack_overflow.py b/tests/extmod/ure_stack_overflow.py
@@ -0,0 +1,13 @@
+try:
+    import ure as re
+except ImportError:
+    try:
+        import re
+    except ImportError:
+        print("SKIP")
+        raise SystemExit
+
+try:
+    re.match("(a*)*", "aaa")
+except RuntimeError:
+    print("RuntimeError")
diff --git a/tests/extmod/ure_stack_overflow.py.exp b/tests/extmod/ure_stack_overflow.py.exp
@@ -0,0 +1 @@
+RuntimeError
