diff options
Diffstat (limited to 'lib/python2.7/test/test_symtable.py')
| -rw-r--r-- | lib/python2.7/test/test_symtable.py | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/lib/python2.7/test/test_symtable.py b/lib/python2.7/test/test_symtable.py new file mode 100644 index 0000000..c437e86 --- /dev/null +++ b/lib/python2.7/test/test_symtable.py @@ -0,0 +1,184 @@ +""" +Test the API of the symtable module. +""" +import symtable +import unittest + +from test import test_support + + +TEST_CODE = """ +import sys + +glob = 42 + +class Mine: + instance_var = 24 + def a_method(p1, p2): + pass + +def spam(a, b, *var, **kw): + global bar + bar = 47 + x = 23 + glob + def internal(): + return x + return internal + +def foo(): + exec 'm' + from sys import * + +def namespace_test(): pass +def namespace_test(): pass +""" + + +def find_block(block, name): + for ch in block.get_children(): + if ch.get_name() == name: + return ch + + +class SymtableTest(unittest.TestCase): + + with test_support.check_warnings( + ("import \* only allowed at module level", SyntaxWarning)): + top = symtable.symtable(TEST_CODE, "?", "exec") + # These correspond to scopes in TEST_CODE + Mine = find_block(top, "Mine") + a_method = find_block(Mine, "a_method") + spam = find_block(top, "spam") + internal = find_block(spam, "internal") + foo = find_block(top, "foo") + + def test_type(self): + self.assertEqual(self.top.get_type(), "module") + self.assertEqual(self.Mine.get_type(), "class") + self.assertEqual(self.a_method.get_type(), "function") + self.assertEqual(self.spam.get_type(), "function") + self.assertEqual(self.internal.get_type(), "function") + + def test_optimized(self): + self.assertFalse(self.top.is_optimized()) + self.assertFalse(self.top.has_exec()) + self.assertFalse(self.top.has_import_star()) + + self.assertTrue(self.spam.is_optimized()) + + self.assertFalse(self.foo.is_optimized()) + self.assertTrue(self.foo.has_exec()) + self.assertTrue(self.foo.has_import_star()) + + def test_nested(self): + self.assertFalse(self.top.is_nested()) + self.assertFalse(self.Mine.is_nested()) + self.assertFalse(self.spam.is_nested()) + self.assertTrue(self.internal.is_nested()) + + def test_children(self): + self.assertTrue(self.top.has_children()) + self.assertTrue(self.Mine.has_children()) + self.assertFalse(self.foo.has_children()) + + def test_lineno(self): + self.assertEqual(self.top.get_lineno(), 0) + self.assertEqual(self.spam.get_lineno(), 11) + + def test_function_info(self): + func = self.spam + self.assertEqual(sorted(func.get_parameters()), ["a", "b", "kw", "var"]) + expected = ["a", "b", "internal", "kw", "var", "x"] + self.assertEqual(sorted(func.get_locals()), expected) + self.assertEqual(sorted(func.get_globals()), ["bar", "glob"]) + self.assertEqual(self.internal.get_frees(), ("x",)) + + def test_globals(self): + self.assertTrue(self.spam.lookup("glob").is_global()) + self.assertFalse(self.spam.lookup("glob").is_declared_global()) + self.assertTrue(self.spam.lookup("bar").is_global()) + self.assertTrue(self.spam.lookup("bar").is_declared_global()) + self.assertFalse(self.internal.lookup("x").is_global()) + self.assertFalse(self.Mine.lookup("instance_var").is_global()) + + def test_local(self): + self.assertTrue(self.spam.lookup("x").is_local()) + self.assertFalse(self.internal.lookup("x").is_local()) + + def test_referenced(self): + self.assertTrue(self.internal.lookup("x").is_referenced()) + self.assertTrue(self.spam.lookup("internal").is_referenced()) + self.assertFalse(self.spam.lookup("x").is_referenced()) + + def test_parameters(self): + for sym in ("a", "var", "kw"): + self.assertTrue(self.spam.lookup(sym).is_parameter()) + self.assertFalse(self.spam.lookup("x").is_parameter()) + + def test_symbol_lookup(self): + self.assertEqual(len(self.top.get_identifiers()), + len(self.top.get_symbols())) + + self.assertRaises(KeyError, self.top.lookup, "not_here") + + def test_namespaces(self): + self.assertTrue(self.top.lookup("Mine").is_namespace()) + self.assertTrue(self.Mine.lookup("a_method").is_namespace()) + self.assertTrue(self.top.lookup("spam").is_namespace()) + self.assertTrue(self.spam.lookup("internal").is_namespace()) + self.assertTrue(self.top.lookup("namespace_test").is_namespace()) + self.assertFalse(self.spam.lookup("x").is_namespace()) + + self.assertTrue(self.top.lookup("spam").get_namespace() is self.spam) + ns_test = self.top.lookup("namespace_test") + self.assertEqual(len(ns_test.get_namespaces()), 2) + self.assertRaises(ValueError, ns_test.get_namespace) + + def test_assigned(self): + self.assertTrue(self.spam.lookup("x").is_assigned()) + self.assertTrue(self.spam.lookup("bar").is_assigned()) + self.assertTrue(self.top.lookup("spam").is_assigned()) + self.assertTrue(self.Mine.lookup("a_method").is_assigned()) + self.assertFalse(self.internal.lookup("x").is_assigned()) + + def test_imported(self): + self.assertTrue(self.top.lookup("sys").is_imported()) + + def test_name(self): + self.assertEqual(self.top.get_name(), "top") + self.assertEqual(self.spam.get_name(), "spam") + self.assertEqual(self.spam.lookup("x").get_name(), "x") + self.assertEqual(self.Mine.get_name(), "Mine") + + def test_class_info(self): + self.assertEqual(self.Mine.get_methods(), ('a_method',)) + + def test_filename_correct(self): + ### Bug tickler: SyntaxError file name correct whether error raised + ### while parsing or building symbol table. + def checkfilename(brokencode): + try: + symtable.symtable(brokencode, "spam", "exec") + except SyntaxError as e: + self.assertEqual(e.filename, "spam") + else: + self.fail("no SyntaxError for %r" % (brokencode,)) + checkfilename("def f(x): foo)(") # parse-time + checkfilename("def f(x): global x") # symtable-build-time + + def test_eval(self): + symbols = symtable.symtable("42", "?", "eval") + + def test_single(self): + symbols = symtable.symtable("42", "?", "single") + + def test_exec(self): + symbols = symtable.symtable("def f(x): return x", "?", "exec") + + +def test_main(): + test_support.run_unittest(SymtableTest) + +if __name__ == '__main__': + test_main() |