def test_operators_on_suspicious_types(self):
class Spam(numbers.Number):
def __add__(inner_self, other):
self.fail("doing attribute lookup might have side effects")
with self.assertRaises(ValueError):
simple_eval("a + 1", {"a": Spam()})
def test_operators_on_suspicious_types(self):
class Spam(numbers.Number):
def __add__(inner_self, other):
self.fail("doing attribute lookup might have side effects")
with self.assertRaises(ValueError):
simple_eval('a + 1', {'a': Spam()})
def test_lookup_on_suspicious_types(self):
class FakeDict(object):
pass
with self.assertRaises(ValueError):
simple_eval('a[1]', {'a': FakeDict()})
class TrickyDict(dict):
def __getitem__(self, index):
self.fail("doing key lookup isn't safe")
with self.assertRaises(ValueError):
simple_eval('a[1]', {'a': TrickyDict()})
class SchrodingersDict(dict):
def __getattribute__(inner_self, attr):
self.fail("doing attribute lookup might have side effects")
with self.assertRaises(ValueError):
simple_eval('a[1]', {'a': SchrodingersDict()})
class SchrodingersCatsDict(dict):
def __getattr__(inner_self, attr):
self.fail("doing attribute lookup might have side effects")
with self.assertRaises(ValueError):
simple_eval('a[1]', {'a': SchrodingersDict()})
def test_lookup_on_suspicious_types(self):
class FakeDict(object):
pass
with self.assertRaises(ValueError):
simple_eval("a[1]", {"a": FakeDict()})
class TrickyDict(dict):
def __getitem__(self, index):
self.fail("doing key lookup isn't safe")
with self.assertRaises(ValueError):
simple_eval("a[1]", {"a": TrickyDict()})
class SchrodingersDict(dict):
def __getattribute__(inner_self, attr):
self.fail("doing attribute lookup might have side effects")
with self.assertRaises(ValueError):
simple_eval("a[1]", {"a": SchrodingersDict()})
class SchrodingersCatsDict(dict):
def __getattr__(inner_self, attr):
self.fail("doing attribute lookup might have side effects")
with self.assertRaises(ValueError):
simple_eval("a[1]", {"a": SchrodingersDict()})
def test_operators_on_numbers(self):
self.assertEqual(simple_eval('-2'), -2)
self.assertEqual(simple_eval('1 + 1'), 2)
self.assertEqual(simple_eval('a - 2', {'a': 1}), -1)
with self.assertRaises(ValueError):
simple_eval('2 * 3')
with self.assertRaises(ValueError):
simple_eval('2 ** 3')
def test_operators_on_numbers(self):
self.assertEqual(simple_eval("-2"), -2)
self.assertEqual(simple_eval("1 + 1"), 2)
self.assertEqual(simple_eval("a - 2", {"a": 1}), -1)
with self.assertRaises(ValueError):
simple_eval("2 * 3")
with self.assertRaises(ValueError):
simple_eval("2 ** 3")
def test_operators_on_numbers(self):
self.assertEqual(simple_eval("-2"), -2)
self.assertEqual(simple_eval("1 + 1"), 2)
self.assertEqual(simple_eval("a - 2", {"a": 1}), -1)
with self.assertRaises(ValueError):
simple_eval("2 * 3")
with self.assertRaises(ValueError):
simple_eval("2 ** 3")
def test_operators_on_numbers(self):
self.assertEqual(simple_eval('-2'), -2)
self.assertEqual(simple_eval('1 + 1'), 2)
self.assertEqual(simple_eval('a - 2', {'a': 1}), -1)
with self.assertRaises(ValueError):
simple_eval('2 * 3')
with self.assertRaises(ValueError):
simple_eval('2 ** 3')
def test_function_calls_raise(self):
with self.assertRaises(ValueError):
simple_eval('1()')
def test_attribute_access(self):
class Foo(object):
abc = 1
self.assertEqual(simple_eval('foo.abc', {'foo': Foo()}), 1)
def test_name_lookup(self):
"""Names can be lookup up in a namespace"""
self.assertEqual(simple_eval("a", {"a": 1}), 1)
self.assertEqual(simple_eval("map"), map)
self.assertEqual(simple_eval("a[b]", {"a": {"c": 1}, "b": "c"}), 1)
def assertMatchesStdlib(self, expr):
self.assertEqual(ast.literal_eval(expr), simple_eval(expr))
def assertMatchesStdlib(self, expr):
self.assertEqual(ast.literal_eval(expr), simple_eval(expr))
def test_attribute_access(self):
class Foo:
abc = 1
self.assertEqual(simple_eval("foo.abc", {"foo": Foo()}), 1)
def test_name_lookup_indexing(self):
"""Names can be looked up in a namespace"""
self.assertEqual(simple_eval("a[b]", {"a": {"c": 1}, "b": "c"}), 1)
def test_name_lookup(self):
"""Names can be looked up in a namespace"""
self.assertEqual(simple_eval("a", {"a": 1}), 1)
self.assertEqual(simple_eval("map"), map)
def test_indexing(self):
"""Literals can be indexed into"""
self.assertEqual(simple_eval("[1,2][0]"), 1)
def test_nonexistant_names_raise(self):
with self.assertRaises(EvaluationError):
simple_eval('a')
def test_attribute_access(self):
class Foo(object):
abc = 1
self.assertEqual(simple_eval('foo.abc', {'foo': Foo()}), 1)
def test_indexing(self):
"""Literals can be indexed into"""
self.assertEqual(simple_eval('[1,2][0]'), 1)
self.assertEqual(simple_eval('a', {'a': 1}), 1)
def test_indexing(self):
"""Literals can be indexed into"""
self.assertEqual(simple_eval("[1,2][0]"), 1)
self.assertEqual(simple_eval("a", {"a": 1}), 1)
def test_name_lookup(self):
"""Names can be lookup up in a namespace"""
self.assertEqual(simple_eval('a', {'a': 1}), 1)
self.assertEqual(simple_eval('map'), map)
self.assertEqual(simple_eval('a[b]', {'a': {'c': 1}, 'b': 'c'}), 1)
def test_allow_name_lookup(self):
"""Names can be lookup up in a namespace"""
self.assertEqual(simple_eval("a", {"a": 1}), 1)
def test_allow_name_lookup(self):
"""Names can be lookup up in a namespace"""
self.assertEqual(simple_eval('a', {'a': 1}), 1)
def test_name_lookup(self):
"""Names can be lookup up in a namespace"""
self.assertEqual(simple_eval('a', {'a': 1}), 1)
self.assertEqual(simple_eval('map'), map)
self.assertEqual(simple_eval('a[b]', {'a': {'c': 1}, 'b': 'c'}), 1)
def test_nonexistant_names_raise(self):
with self.assertRaises(EvaluationError):
simple_eval("a")
def test_function_calls_raise(self):
with self.assertRaises(ValueError):
simple_eval("1()")
def test_indexing(self):
"""Literals can be indexed into"""
self.assertEqual(simple_eval('[1,2][0]'), 1)
self.assertEqual(simple_eval('a', {'a': 1}), 1)
def test_attribute_access(self):
class Foo(object):
abc = 1
self.assertEqual(simple_eval("foo.abc", {"foo": Foo()}), 1)
def test_name_lookup(self):
"""Names can be lookup up in a namespace"""
self.assertEqual(simple_eval("a", {"a": 1}), 1)
self.assertEqual(simple_eval("map"), map)
self.assertEqual(simple_eval("a[b]", {"a": {"c": 1}, "b": "c"}), 1)
