atk4\data\tests\PersistentArrayTest::testInsert PHP Method

    public function testInsert()
    {
        $a = ['user' => [1 => ['name' => 'John', 'surname' => 'Smith'], 2 => ['name' => 'Sarah', 'surname' => 'Jones']]];
        $p = new Persistence_Array($a);
        $m = new Model($p, 'user');
        $m->addField('name');
        $m->addField('surname');
        $m->insert(['name' => 'Foo', 'surname' => 'Bar']);
        $this->assertEquals(['user' => [1 => ['name' => 'John', 'surname' => 'Smith'], 2 => ['name' => 'Sarah', 'surname' => 'Jones'], 3 => ['name' => 'Foo', 'surname' => 'Bar', 'id' => 3]]], $a);
    }