Fix the remaining issues with the StatementElement.next refactoring.

test/test_api/test_call_signatures.py

@@ -24,6 +24,9 @@ class TestCallSignatures(TestCase):
 
     def test_simple(self):
         run = self._run_simple
+        s7 = "str().upper().center("
+        s8 = "str(int[zip("
+        run(s7, 'center', 0)
 
         # simple
         s1 = "sorted(a, str("

test/test_evaluate/test_precedence.py

@@ -8,7 +8,7 @@ def parse_tree(statement_string, is_slice=False):
     stmt = p.module.statements[0]
     if is_slice:
         # get the part of the execution that is the slice
-        stmt = stmt.expression_list()[0].execution[0]
+        stmt = stmt.expression_list()[0].next[0]
     iterable = stmt.expression_list()
     pr = precedence.create_precedence(iterable)
     if isinstance(pr, precedence.Precedence):

test/test_regression.py

@@ -104,7 +104,7 @@ class TestRegression(TestCase):
         parser = Parser(s)
         for i, s in enumerate(parser.module.statements, 3):
             for c in s.expression_list():
-                self.assertEqual(c.execution.end_pos[1], i)
+                self.assertEqual(c.next.end_pos[1], i)
 
     def check_definition_by_marker(self, source, after_cursor, names):
         r"""