如何在Codeception中使用SubmitForm（）附加文件

I'm testing a form through the SubmitForm() function because the form uses javascript to cycle through each individual item.

example:

$I->submitForm('#form', array(
    'feet' => '1',
    'inches' => '2',

), 'submit');

This works fine but I'm having trouble with a file upload input.

$I->submitForm('#form', array(
    'feet' => '1',
    'inches' => '2',
    'file' => ???

 ), 'submit');

I tried sending an array to mimic the $_FILES array but that obviously isn't the right way to do it. Is this possible?

I've encountered this issue as well and the only way I can see around it is to manually fill the fields and the click the submit button.

For example

$I->fillField(['name' => 'name'], 'Test');
$I->attachFile('input[name=photo]', 'test.jpg');
$I->click('#formId button[type=submit]');
$I->seeCurrentRouteIs('route.index');
$I->see('Model has been updated.');

You can store any test files in the Codeception tests/_data folder.

This does work, but sadly doesn't help me in my current situation as I have a form which dynamically populates various select elements so I need to submitForm as I can't manually selectOption as the options are populated depending on other form completions.