Collections\Tests\Dictionary\DeleteTest::test_delete_key_creates_second_dic_without_key PHP Метод

    public function test_delete_key_creates_second_dic_without_key()
    {
        $d = (new Dictionary('string', 'int'))->add('a', 1)->add('b', 2);
        $this->assertEquals(2, $d->count());
        $d2 = $d->delete('a');
        $this->assertEquals(2, $d->count());
        $this->assertEquals(1, $d2->count());
        $this->assertFalse($d2->valueExists(1));
    }