Multiple DataProviders

[roxblnfk]

Support for combining multiple data sources in parameterized tests.

Features

Union: multiple #[DataProvider]

#[DataProvider('foos')]
#[DataProvider('bars')]
public function testMethod(string $value) {}

Datasets: foos:0, foos:1, bars:0, bars:1

(done in cc21b56)

#[DataZip]: combine by index

#[DataZip([
    new DataProvider('letters'),  // yields 'a', 'b'
    new DataProvider('numbers'),  // yields 1, 2
])]
public function testMethod(string $letter, int $number) {}

Dataset	$letter	$number
0	a	1
1	b	2

Throws error if providers have different lengths.

#[DataCross]: cartesian product

#[DataCross([
    new DataProvider('letters'),  // yields 'a', 'b'
    new DataProvider('numbers'),  // yields 1, 2
])]
public function testMethod(string $letter, int $number) {}

Dataset	$letter	$number
0	a	1
1	a	2
2	b	1
3	b	2

Notes

• Named yields preserved: admin|read, admin|write, etc.
• Empty provider → Risky

Future Scope

• DataSet support in combinators