Fix multiline empty tuple with comment

Author: apmorton

rope/refactor/patchedast.py

@@ -874,7 +874,9 @@ def consume_number(self):
         return self._consume_pattern(repattern)
 
     def consume_empty_tuple(self):
-        return self._consume_pattern(re.compile(r"\(\s*\)"))
+        s, _ = self.consume("(")
+        _, e = self.consume(")")
+        return (s, e)
 
     def consume_with_or_comma_context_manager(self):
         repattern = re.compile(r"with|,")

ropetest/refactor/patchedasttest.py

@@ -1000,7 +1000,7 @@ def test_tuple_with_complex_parentheses1(self):
         ast_frag = patchedast.get_patched_ast(source, True)
         checker = _ResultChecker(self, ast_frag)
         checker.check_children(
-            "Tuple", ["(", "", "Tuple", "", ",", " ", NameConstant, "", ")"]
+            "Tuple", ["Tuple", "", ",", " ", NameConstant]
         )
 
     def test_tuple_with_complex_parentheses2(self):
@@ -1016,7 +1016,7 @@ def test_tuple_with_complex_parentheses3(self):
         ast_frag = patchedast.get_patched_ast(source, True)
         checker = _ResultChecker(self, ast_frag)
         checker.check_children(
-            "Tuple", ["(", "", "Tuple", "", ",", " ", "Tuple", ",", ")"]
+            "Tuple", ["Tuple", "", ",", " ", "Tuple"]
         )
 
     def test_one_item_tuple_node(self):
@@ -1036,7 +1036,7 @@ def test_empty_tuple_node2(self):
         ast_frag = patchedast.get_patched_ast(source, True)
         checker = _ResultChecker(self, ast_frag)
         checker.check_children(
-            "Tuple", ["(", "", "Tuple", "", ",", " ", NameConstant, "", ")"]
+            "Tuple", ["Tuple", "", ",", " ", NameConstant]
         )
 
     def test_empty_tuple_node3(self):
@@ -1047,6 +1047,12 @@ def test_empty_tuple_node3(self):
             "Tuple", ["Tuple", "", ",", " ", NameConstant]
         )
 
+    def test_empty_tuple_node4(self):
+        source = "a = (\n# foo,\n)\n"
+        ast_frag = patchedast.get_patched_ast(source, True)
+        checker = _ResultChecker(self, ast_frag)
+        checker.check_children("Tuple", ["(\n# foo,\n)"])
+
     def test_yield_node(self):
         source = dedent("""\
             def f():
@@ -1575,6 +1581,8 @@ def check_children(self, text, children):
         if node is None:
             self.test_case.fail("Node <%s> cannot be found" % text)
         result = list(node.sorted_children)
+        print(children)
+        print(result)
         self.test_case.assertEqual(len(children), len(result))
         for expected, child in zip(children, result):
             goals = expected