improved test case

tests/run/trybreak.pyx

-__doc__ = u"""
->>> print(foo())
-a
-"""
-
 # Indirectly makes sure the cleanup happens correctly on breaking.
-def foo():
-    for x in "abc":
+
+def try_except_break():
+    """
+    >>> print(try_except_break())
+    a
+    """
+    for x in list("abc"):
         try:
             x()
         except:
             break
-    for x in "abc":
+    return x
+
+def try_break_except():
+    """
+    >>> print(try_break_except())
+    a
+    """
+    for x in list("abc"):
+        try:
+            break
+        except:
+            pass
+    return x
+
+def try_no_break_except_return():
+    """
+    >>> print(try_no_break_except_return())
+    a
+    """
+    for x in list("abc"):
         try:
             x()
+            break
         except:
             return x
+    return x