def test_can_resolve_ref(self):
parameters = {"key": "value"}
input = {"Ref": "key"}
ref = RefAction()
self.assertEqual(parameters["key"],
ref.resolve_parameter_refs(input, parameters))
def test_must_ignore_invalid_value(self):
parameters = {"key": "value"}
input = {"Ref": ["invalid value"]}
expected = {"Ref": ["invalid value"]}
ref = RefAction()
self.assertEqual(expected,
ref.resolve_parameter_refs(input, parameters))
def test_unknown_ref(self):
parameters = {"key": "value"}
input = {"Ref": "someotherkey"}
expected = {"Ref": "someotherkey"}
ref = RefAction()
self.assertEqual(expected,
ref.resolve_parameter_refs(input, parameters))
def test_return_value_if_cannot_handle(self, can_handle_mock):
parameters = {"key": "value"}
input = {"Ref": "key"}
expected = {"Ref": "key"}
ref = RefAction()
can_handle_mock.return_value = False # Simulate failure to handle the input. Result should be same as input
self.assertEqual(expected,
ref.resolve_parameter_refs(input, parameters))
def test_can_resolve_ref(self):
parameters = {
"key": "value"
}
input = {
"Ref": "key"
}
ref = RefAction()
self.assertEqual(parameters["key"], ref.resolve_parameter_refs(input, parameters))
def test_return_value_if_cannot_handle(self, can_handle_mock):
input = {"Ref": "key"}
expected = {"Ref": "key"}
ref = RefAction()
can_handle_mock.return_value = False # Simulate failure to handle the input. Result should be same as input
self.assertEqual(
expected,
ref.resolve_resource_id_refs(input,
self.supported_resource_id_refs_mock))
def test_return_value_if_cannot_handle(self, can_handle_mock):
input = {
"Ref": "key"
}
expected = {
"Ref": "key"
}
ref = RefAction()
can_handle_mock.return_value = False # Simulate failure to handle the input. Result should be same as input
self.assertEqual(expected, ref.resolve_resource_id_refs(input, self.supported_resource_id_refs_mock))
def test_must_ignore_invalid_value(self):
parameters = {
"key": "value"
}
input = {
"Ref": ["invalid value"]
}
expected = {
"Ref": ["invalid value"]
}
ref = RefAction()
self.assertEqual(expected, ref.resolve_parameter_refs(input, parameters))
def test_unknown_ref(self):
parameters = {
"key": "value"
}
input = {
"Ref": "someotherkey"
}
expected = {
"Ref": "someotherkey"
}
ref = RefAction()
self.assertEqual(expected, ref.resolve_parameter_refs(input, parameters))
def test_return_value_if_cannot_handle(self, can_handle_mock):
parameters = {
"key": "value"
}
input = {
"Ref": "key"
}
expected = {
"Ref": "key"
}
ref = RefAction()
can_handle_mock.return_value = False # Simulate failure to handle the input. Result should be same as input
self.assertEqual(expected, ref.resolve_parameter_refs(input, parameters))
def to_statement(self, parameter_values):
"""
With the given values for each parameter, this method will return a policy statement that can be used
directly with IAM.
:param dict parameter_values: Dict containing values for each parameter defined in the template
:return dict: Dictionary containing policy statement
:raises InvalidParameterValues: If parameter values is not a valid dictionary or does not contain values for all parameters
:raises InsufficientParameterValues: If the parameter values don't have values for all required parameters
"""
missing = self.missing_parameter_values(parameter_values)
if len(missing) > 0:
# str() of elements of list to prevent any `u` prefix from being displayed in user-facing error message
raise InsufficientParameterValues(
"Following required parameters of template '{}' don't have values: {}"
.format(self.name, [str(m) for m in missing]))
# Select only necessary parameter_values. this is to prevent malicious or accidental
# injection of values for parameters not intended in the template. This is important because "Ref" resolution
# will substitute any references for which a value is provided.
necessary_parameter_values = {
name: value
for name, value in parameter_values.items()
if name in self.parameters
}
# Only "Ref" is supported
supported_intrinsics = {RefAction.intrinsic_name: RefAction()}
resolver = IntrinsicsResolver(necessary_parameter_values,
supported_intrinsics)
definition_copy = copy.deepcopy(self.definition)
return resolver.resolve_parameter_refs(definition_copy)
class TestRefCanResolveResourceIdRefs(TestCase):
def setUp(self):
self.supported_resource_id_refs_mock = Mock()
self.ref = RefAction()
def test_must_replace_refs(self):
resolved_value = "NewLogicalId"
input = {
"Ref": "LogicalId"
}
expected = {
"Ref": resolved_value
}
self.supported_resource_id_refs_mock.get.return_value = resolved_value
output = self.ref.resolve_resource_id_refs(input, self.supported_resource_id_refs_mock)
self.assertEqual(expected, output)
self.supported_resource_id_refs_mock.get.assert_called_once_with("LogicalId")
def test_handle_unsupported_references(self):
input = {
"Ref": "OtherLogicalId.Property"
}
expected = {
"Ref": "OtherLogicalId.Property"
}
self.supported_resource_id_refs_mock.get.return_value = None
output = self.ref.resolve_resource_id_refs(input, self.supported_resource_id_refs_mock)
self.assertEqual(expected, output)
self.supported_resource_id_refs_mock.get.assert_not_called()
@patch.object(RefAction, "can_handle")
def test_return_value_if_cannot_handle(self, can_handle_mock):
input = {
"Ref": "key"
}
expected = {
"Ref": "key"
}
ref = RefAction()
can_handle_mock.return_value = False # Simulate failure to handle the input. Result should be same as input
self.assertEqual(expected, ref.resolve_resource_id_refs(input, self.supported_resource_id_refs_mock))
class TestRefCanResolveResourceIdRefs(TestCase):
def setUp(self):
self.supported_resource_id_refs_mock = Mock()
self.ref = RefAction()
def test_must_replace_refs(self):
resolved_value = "NewLogicalId"
input = {"Ref": "LogicalId"}
expected = {"Ref": resolved_value}
self.supported_resource_id_refs_mock.get.return_value = resolved_value
output = self.ref.resolve_resource_id_refs(
input, self.supported_resource_id_refs_mock)
self.assertEqual(expected, output)
self.supported_resource_id_refs_mock.get.assert_called_once_with(
"LogicalId")
def test_handle_unsupported_references(self):
input = {"Ref": "OtherLogicalId.Property"}
expected = {"Ref": "OtherLogicalId.Property"}
self.supported_resource_id_refs_mock.get.return_value = None
output = self.ref.resolve_resource_id_refs(
input, self.supported_resource_id_refs_mock)
self.assertEqual(expected, output)
self.supported_resource_id_refs_mock.get.assert_not_called()
@patch.object(RefAction, "can_handle")
def test_return_value_if_cannot_handle(self, can_handle_mock):
input = {"Ref": "key"}
expected = {"Ref": "key"}
ref = RefAction()
can_handle_mock.return_value = False # Simulate failure to handle the input. Result should be same as input
self.assertEqual(
expected,
ref.resolve_resource_id_refs(input,
self.supported_resource_id_refs_mock))
def setUp(self):
self.supported_resource_id_refs_mock = Mock()
self.ref = RefAction()
def setUp(self):
self.supported_resource_id_refs_mock = Mock()
self.ref = RefAction()
