def test_with_optional_group(self):
p = PatternGroup([Pattern(self.store, VariableExpression('id'), LiteralExpression('name'), VariableExpression('name')),
OptionalGroup(
PatternGroup([Pattern(self.store, VariableExpression('id'), LiteralExpression('weight'), VariableExpression('weight')),
Pattern(self.store, VariableExpression('id'), LiteralExpression('size'), VariableExpression('size'))])
)])
self.assertEqual(
[dict(id='a', name='name-a'),
dict(id='b', name='name-b')],
list(p.match({}))
)
self.store.add_triples(('a', 'size', 'size-a'))
self.assertEqual(
[dict(id='a', name='name-a', weight='weight-a', size='size-a'),
dict(id='b', name='name-b')],
list(p.match({}))
)
self.assertEqual(
[dict(id='a', name='name-a', weight='weight-a', size='size-a')],
list(p.match({'id': 'a'}))
)
self.assertEqual(
[dict(id='b', name='name-b')],
list(p.match({'id': 'b'}))
)
def test_match_empty_solution(self):
p = PatternGroup([Pattern(self.store, VariableExpression('id'), LiteralExpression('name'), VariableExpression('name')),
Pattern(self.store, VariableExpression('id'), LiteralExpression('weight'), VariableExpression('weight'))])
self.assertEqual(
[dict(id='a', name='name-a', weight='weight-a')],
list(p.match({}))
)
def test_match_with_constraining_solution(self):
p = PatternGroup([Pattern(self.store, VariableExpression('id'), LiteralExpression('name'), VariableExpression('name')),
Pattern(self.store, VariableExpression('id'), LiteralExpression('weight'), VariableExpression('weight'))])
self.assertEqual(
[],
list(p.match({'id': 'b'}))
)
self.assertEqual(
[dict(id='a', name='name-a', weight='weight-a')],
list(p.match({'id': 'a'}))
)