public function testConvertsSourceAndPositionsToLocations()
{
$source = new Source('{
field
}');
$e = new Error('msg', null, $source, [10]);
$this->assertEquals(null, $e->nodes);
$this->assertEquals($source, $e->getSource());
$this->assertEquals([10], $e->getPositions());
$this->assertEquals([new SourceLocation(2, 9)], $e->getLocations());
}