diff options
Diffstat (limited to 'Lib/test')
| -rw-r--r-- | Lib/test/test_ast.py | 113 |
1 files changed, 78 insertions, 35 deletions
diff --git a/Lib/test/test_ast.py b/Lib/test/test_ast.py index d080032..f4fbc94 100644 --- a/Lib/test/test_ast.py +++ b/Lib/test/test_ast.py @@ -1,4 +1,5 @@ -import sys +import sys, unittest +from test import test_support import _ast def to_tuple(t): @@ -15,6 +16,7 @@ def to_tuple(t): result.append(to_tuple(getattr(t, f))) return tuple(result) + # These tests are compiled through "exec" # There should be atleast one test per statement exec_tests = [ @@ -112,42 +114,83 @@ eval_tests = [ # TODO: expr_context, slice, boolop, operator, unaryop, cmpop, comprehension # excepthandler, arguments, keywords, alias -if __name__=='__main__' and sys.argv[1:] == ['-g']: - for statements, kind in ((exec_tests, "exec"), (single_tests, "single"), - (eval_tests, "eval")): - print(kind+"_results = [") - for s in statements: - print(repr(to_tuple(compile(s, "?", kind, 0x400)))+",") - print("]") - print("run_tests()") - raise SystemExit +class AST_Tests(unittest.TestCase): + + def _assert_order(self, ast_node, parent_pos): + if not isinstance(ast_node, _ast.AST) or ast_node._fields is None: + return + if isinstance(ast_node, (_ast.expr, _ast.stmt, _ast.excepthandler)): + node_pos = (ast_node.lineno, ast_node.col_offset) + self.assert_(node_pos >= parent_pos) + parent_pos = (ast_node.lineno, ast_node.col_offset) + for name in ast_node._fields: + value = getattr(ast_node, name) + if isinstance(value, list): + for child in value: + self._assert_order(child, parent_pos) + elif value is not None: + self._assert_order(value, parent_pos) + + def test_snippets(self): + for input, output, kind in ((exec_tests, exec_results, "exec"), + (single_tests, single_results, "single"), + (eval_tests, eval_results, "eval")): + for i, o in zip(input, output): + ast_tree = compile(i, "?", kind, _ast.PyCF_ONLY_AST) + self.assertEquals(to_tuple(ast_tree), o) + self._assert_order(ast_tree, (0, 0)) + + def test_nodeclasses(self): + x = _ast.BinOp(1, 2, 3, lineno=0) + self.assertEquals(x.left, 1) + self.assertEquals(x.op, 2) + self.assertEquals(x.right, 3) + self.assertEquals(x.lineno, 0) + + # node raises exception when not given enough arguments + self.assertRaises(TypeError, _ast.BinOp, 1, 2) + + # can set attributes through kwargs too + x = _ast.BinOp(left=1, op=2, right=3, lineno=0) + self.assertEquals(x.left, 1) + self.assertEquals(x.op, 2) + self.assertEquals(x.right, 3) + self.assertEquals(x.lineno, 0) + + # this used to fail because Sub._fields was None + x = _ast.Sub() + + def test_pickling(self): + import pickle + mods = [pickle] + try: + import cPickle + mods.append(cPickle) + except ImportError: + pass + protocols = [0, 1, 2] + for mod in mods: + for protocol in protocols: + for ast in (compile(i, "?", "exec", 0x400) for i in exec_tests): + ast2 = mod.loads(mod.dumps(ast, protocol)) + self.assertEquals(to_tuple(ast2), to_tuple(ast)) -def test_order(ast_node, parent_pos): +def test_main(): + test_support.run_unittest(AST_Tests) - if not isinstance(ast_node, _ast.AST) or ast_node._fields is None: +def main(): + if __name__ != '__main__': return - if isinstance(ast_node, (_ast.expr, _ast.stmt, _ast.excepthandler)): - node_pos = (ast_node.lineno, ast_node.col_offset) - assert node_pos >= parent_pos, (node_pos, parent_pos) - parent_pos = (ast_node.lineno, ast_node.col_offset) - for name in ast_node._fields: - value = getattr(ast_node, name) - if isinstance(value, list): - for child in value: - test_order(child, parent_pos) - elif value is not None: - test_order(value, parent_pos) - -def run_tests(): - for input, output, kind in ((exec_tests, exec_results, "exec"), - (single_tests, single_results, "single"), - (eval_tests, eval_results, "eval")): - for i, o in zip(input, output): - ast_tree = compile(i, "?", kind, 0x400) - tup = to_tuple(ast_tree) - assert tup == o, ("kind=%r\ninput=%r\nexpected=%r\ngot=%r" % - (kind, i, o, tup)) - test_order(ast_tree, (0, 0)) + if sys.argv[1:] == ['-g']: + for statements, kind in ((exec_tests, "exec"), (single_tests, "single"), + (eval_tests, "eval")): + print(kind+"_results = [") + for s in statements: + print(repr(to_tuple(compile(s, "?", kind, 0x400)))+",") + print("]") + print("main()") + raise SystemExit + test_main() #### EVERYTHING BELOW IS GENERATED ##### exec_results = [ @@ -194,4 +237,4 @@ eval_results = [ ('Expression', ('Tuple', (1, 0), [('Num', (1, 0), 1), ('Num', (1, 2), 2), ('Num', (1, 4), 3)], ('Load',))), ('Expression', ('Call', (1, 0), ('Attribute', (1, 0), ('Attribute', (1, 0), ('Attribute', (1, 0), ('Name', (1, 0), 'a', ('Load',)), 'b', ('Load',)), 'c', ('Load',)), 'd', ('Load',)), [('Subscript', (1, 8), ('Attribute', (1, 8), ('Name', (1, 8), 'a', ('Load',)), 'b', ('Load',)), ('Slice', ('Num', (1, 12), 1), ('Num', (1, 14), 2), None), ('Load',))], [], None, None)), ] -run_tests() +main() |