public function testUnsAdditionalInformation() { // set array to additional $data = ['key1' => 'data1', 'key2' => 'data2']; $this->info->setAdditionalInformation($data); // unset by key $this->assertEquals(['key2' => 'data2'], $this->info->unsAdditionalInformation('key1')->getAdditionalInformation()); // unset all $this->assertEmpty($this->info->unsAdditionalInformation()->getAdditionalInformation()); }