def test_it_can_be_used_as_a_document_to_resolve_a_pointer_in(self):
ctx = _TestContext(self.id(), {'a': 1, 'b': 2, 'c': 3})
ref = Reference(ctx, '')
self.assertEqual(Pointer.resolve_in('/a', ref), 1)
self.assertEqual(Pointer.resolve_in('/b', ref), 2)
self.assertEqual(Pointer.resolve_in('/c', ref), 3)
def test_it_offers_support_for_lazy_loaded_values(self):
class LazyValue:
def __lazy_eval__(self):
return {'a': 1, 'b': 2, 'c': 3}
value = LazyValue()
self.assertEqual(Pointer.resolve_in('/a', value), 1)
self.assertEqual(Pointer.resolve_in('/b', value), 2)
self.assertEqual(Pointer.resolve_in('/c', value), 3)
def test_pointer_resolve_in_can_be_called_as_a_static_method(self):
self.assertEqual(Pointer.resolve_in('key', {'key': self.sentinel}),
self.sentinel)
self.assertEqual(
Pointer.resolve_in('key', document={'key': self.sentinel}),
self.sentinel)
def test_pointer_resolve_in_can_be_called_as_an_instance_method(self):
self.assertEqual(
Pointer('key').resolve_in({'key': self.sentinel}), self.sentinel)
self.assertEqual(
Pointer('key').resolve_in(document={'key': self.sentinel}),
self.sentinel)
def test_it_raises_an_error_if_unable_to_resolve_token(self):
with self.assertRaises(error.UnreferenceableValue):
Pointer.resolve_in('/key', document=object())
with self.assertRaises(error.UnreferenceableValue):
Pointer.resolve_in('key', document=object())
def test_it_raises_an_error_on_unescaped_tilde(self):
with self.assertRaises(error.UnescapedTilde):
Pointer.resolve_in('/~', document={})
with self.assertRaises(error.UnescapedTilde):
Pointer.resolve_in('~', document={})
def test_it_raises_an_error_on_unrecognized_escape_sequences(self):
with self.assertRaises(error.UnrecognizedEscapeSequence):
Pointer.resolve_in('/~2', document={})
with self.assertRaises(error.UnrecognizedEscapeSequence):
Pointer.resolve_in('~2', document={})
def check_pointer_equal(self, document, pointer, value):
self.assertEqual(Pointer.resolve_in(pointer, document), value)
# test that starting slash in non-empty pointer is optional
if (len(pointer) > 1 and pointer[0] == '/'):
self.assertEqual(Pointer.resolve_in(pointer[1:], document), value)
def test_it_raises_an_error_if_key_not_in_document(self):
with self.assertRaises(error.MemberNotDefined):
Pointer.resolve_in('/key', document={})
with self.assertRaises(error.MemberNotDefined):
Pointer.resolve_in('key', document={})
def test_it_raises_an_error_for_non_numeric_array_index(self):
with self.assertRaises(error.InvalidArrayIndex):
Pointer.resolve_in('/key', document=[])
with self.assertRaises(error.InvalidArrayIndex):
Pointer.resolve_in('key', document=[])
def test_it_raises_an_error_for_array_index_out_of_range(self):
with self.assertRaises(error.IndexOutOfRange):
Pointer.resolve_in('/5', document=[])
with self.assertRaises(error.IndexOutOfRange):
Pointer.resolve_in('5', document=[])
def test_it_raises_an_error_for_dash_as_an_array_index(self):
with self.assertRaises(error.DashArrayIndexNotSupported):
Pointer.resolve_in('/-', document=[])
with self.assertRaises(error.DashArrayIndexNotSupported):
Pointer.resolve_in('-', document=[])