Pinq\ITraversable::unique PHP Method

    public function unique();

 /**
  * @dataProvider someStrings
  */
 public function testAggregateValuesString(\Pinq\ITraversable $traversable, array $data)
 {
     $this->assertEquals(true, $traversable->all(), 'All');
     $this->assertEquals(true, $traversable->any(), 'Any');
     $this->assertEquals(array_sum(array_map('strlen', $data)) / count($data), $traversable->average('strlen'), 'Average string length');
     $this->assertEquals(array_sum(array_map('strlen', $data)), $traversable->sum('strlen'), 'Sum string length');
     $this->assertEquals(array_unique($data), $traversable->unique()->asArray(), 'Unique');
     $this->assertEquals(implode('- -- -', $data), $traversable->implode('- -- -'), 'String implode');
 }