def test_field_validates_valid_data(self):
nodes = [factory.make_Node() for _ in range(3)]
# Create other nodes.
[factory.make_Node() for _ in range(3)]
field = InstanceListField(model_class=Node, field_name="system_id")
input_data = [node.system_id for node in nodes]
self.assertItemsEqual(
input_data, [node.system_id for node in field.clean(input_data)])
def test_field_ignores_duplicates(self):
nodes = [factory.make_Node() for _ in range(2)]
# Create other nodes.
[factory.make_Node() for _ in range(3)]
field = InstanceListField(model_class=Node, field_name='system_id')
input_data = [node.system_id for node in nodes] * 2
self.assertItemsEqual(
set(input_data),
[node.system_id for node in field.clean(input_data)])
def test_field_rejects_invalid_data(self):
nodes = [factory.make_Node() for _ in range(3)]
field = InstanceListField(model_class=Node, field_name='system_id')
error = self.assertRaises(ValidationError, field.clean,
[node.system_id
for node in nodes] + ['unknown'])
self.assertEqual(['Unknown node(s): unknown.'], error.messages)