def test_variable_graph_properties_are_transferred_to_graph(self):
variable_graph = nx.MultiDiGraph()
variable_graph.add_node('x', input=1, solution=1)
variable_graph.add_node('y', input=1, solution=1)
variable_graph.add_edge('y', 'x', type='employee', input=0, solution=1)
person = Thing('V123', 'person', 'entity')
employment = Thing('V123', 'employment', 'relation')
concept_dict = {'x': person, 'y': employment}
grakn_graph = concept_dict_to_graph(concept_dict, variable_graph)
expected_grakn_graph = nx.MultiDiGraph()
expected_grakn_graph.add_node(person,
type='person',
input=1,
solution=1)
expected_grakn_graph.add_node(employment,
type='employment',
input=1,
solution=1)
expected_grakn_graph.add_edge(employment,
person,
type='employee',
input=0,
solution=1)
self.assertGraphsEqual(expected_grakn_graph, grakn_graph)
def test_single_entity_graph_is_as_expected(self):
variable_graph = nx.MultiDiGraph()
variable_graph.add_node('x')
person = Thing('V123', 'person', 'entity')
concept_dict = {'x': person}
grakn_graph = concept_dict_to_graph(concept_dict, variable_graph)
expected_grakn_graph = nx.MultiDiGraph()
expected_grakn_graph.add_node(person, type='person')
self.assertGraphsEqual(expected_grakn_graph, grakn_graph)
def test_same_thing_occurs_in_two_different_variables(self):
variable_graph = nx.MultiDiGraph()
variable_graph.add_node('x')
variable_graph.add_node('y')
person = Thing('V123', 'person', 'entity')
person2 = Thing('V123', 'person', 'entity')
concept_dict = {'x': person, 'y': person2}
grakn_graph = concept_dict_to_graph(concept_dict, variable_graph)
expected_grakn_graph = nx.MultiDiGraph()
expected_grakn_graph.add_node(person, type='person')
self.assertGraphsEqual(expected_grakn_graph, grakn_graph)
def test_edge_starting_from_entity_throws_exception(self):
variable_graph = nx.MultiDiGraph()
variable_graph.add_node('x')
variable_graph.add_node('y')
variable_graph.add_edge('x', 'y', type='employee')
person = Thing('V123', 'person', 'entity')
employment = Thing('V123', 'employment', 'relation')
concept_dict = {'x': person, 'y': employment}
with self.assertRaises(ValueError) as context:
_ = concept_dict_to_graph(concept_dict, variable_graph)
self.assertEqual(
'An edge in the variable_graph originates from a non-relation, check the variable_graph!',
str(context.exception))
def test_single_entity_single_relation_graph_is_as_expected(self):
variable_graph = nx.MultiDiGraph()
variable_graph.add_node('x')
variable_graph.add_node('y')
variable_graph.add_edge('y', 'x', type='employee')
person = Thing('V123', 'person', 'entity')
employment = Thing('V123', 'employment', 'relation')
concept_dict = {'x': person, 'y': employment}
grakn_graph = concept_dict_to_graph(concept_dict, variable_graph)
expected_grakn_graph = nx.MultiDiGraph()
expected_grakn_graph.add_node(person, type='person')
expected_grakn_graph.add_node(employment, type='employment')
expected_grakn_graph.add_edge(employment, person, type='employee')
self.assertGraphsEqual(expected_grakn_graph, grakn_graph)
def test_exception_if_sets_of_variables_differ(self):
variable_graph = nx.MultiDiGraph()
variable_graph.add_node('x')
variable_graph.add_node('y')
variable_graph.add_node('z')
thing = Thing('V123', 'person', 'entity')
concept_dict = {'x': thing, 'y': thing, 'a': thing}
with self.assertRaises(ValueError) as context:
_ = concept_dict_to_graph(concept_dict, variable_graph)
self.assertEqual(
'The variables in the variable_graph must match those in the concept_dict\n'
'In the variable graph but not in the concept dict: {\'z\'}\n'
'In the concept dict but not in the variable graph: {\'a\'}',
str(context.exception))
def test_single_attribute_graph_is_as_expected(self):
variable_graph = nx.MultiDiGraph()
variable_graph.add_node('x')
name = Thing('V123',
'name',
'attribute',
value_type='string',
value='Bob')
concept_dict = {'x': name}
grakn_graph = concept_dict_to_graph(concept_dict, variable_graph)
expected_grakn_graph = nx.MultiDiGraph()
expected_grakn_graph.add_node(name,
type='name',
value_type='string',
value='Bob')
self.assertGraphsEqual(expected_grakn_graph, grakn_graph)
def test_edge_starting_from_attribute_throws_exception(self):
variable_graph = nx.MultiDiGraph()
variable_graph.add_node('x')
variable_graph.add_node('y')
variable_graph.add_edge('x', 'y', type='employee')
name = Thing('V123',
'name',
'attribute',
data_type='string',
value='Bob')
employment = Thing('V123', 'employment', 'relation')
concept_dict = {'x': name, 'y': employment}
with self.assertRaises(ValueError) as context:
_ = concept_dict_to_graph(concept_dict, variable_graph)
self.assertEqual(
'An edge in the variable_graph originates from a non-relation, check the variable_graph!',
str(context.exception))