make the patched compile() work with AST

--HG--
branch : trunk

py/code/testing/test_source.py

@@ -191,6 +191,15 @@ class TestSourceParsingAndCompiling:
         assert len(source) == 9
         assert source.getstatementrange(5) == (0, 9)
 
+    def test_compile_to_ast(self):
+        if sys.version_info < (2, 5):
+            py.test.skip("requires Python 2.5")
+        import _ast
+        source = Source("x = 4")
+        mod = source.compile(flag=_ast.PyCF_ONLY_AST)
+        assert isinstance(mod, _ast.Module)
+        compile(mod, "<filename>", "exec")
+
     def test_compile_and_getsource(self):
         co = self.source.compile()
         py.builtin.exec_(co, globals())