public function flatten_optionals() { $this->assertSequence(['a', 'b'], Sequence::of([Optional::of('a'), Optional::$EMPTY, Optional::of('b')])->flatten()); }
public function toString_for_sequence_of_array() { $this->assertEquals('util.data.Optional@[1, 2, 3]', Optional::of([1, 2, 3])->toString()); }