PHPUnit @dataProvider simply doesn't work

Question

I\'ve read the documentation on the topic, and my code follows all requirements of a data provider implementation. First of all, here\'s the full code of the test just in case i

Answer 1

That error means that at least one of the data arrays that your data-provider method is returning is empty. For example:

public function dataProvider() {
    return array(
        array(1, 2, 3),
        array(),           // this will cause a "Missing argument 1" error
        array(4, 5, 6)
    );
}

Because you're generating the data arrays dynamically, you'll need to debug your data source(s) and figure out why that would be the case.