|
public isSuperset ( |
||
| $B | ||
| return | boolean | |
public function isSuperset(Set $B) : bool
{
$B_array = $B->asArray();
$A∩B = array_intersect_key($this->A, $B_array);
$A∖B = array_diff_key($B_array, $this->A);
return count($A∩B) === $B->length() && empty($A∖B);
} /**
* @dataProvider dataProviderForIsSubsetSuperset
*/
public function testIsSuperset(array $A, array $B)
{
$setA = new Set($B);
$setB = new Set($A);
$this->assertTrue($setA->isSuperset($setB));
}
