public function testUniqueStrict()
{
$c = new Collection([['id' => '0', 'name' => 'zero'], ['id' => '00', 'name' => 'double zero'], ['id' => '0', 'name' => 'again zero']]);
$this->assertEquals([['id' => '0', 'name' => 'zero'], ['id' => '00', 'name' => 'double zero']], $c->uniqueStrict('id')->all());
}