public function requireOnceIncludesAndReturnsResultOfIncludedPhpFile()
{
$entryIdentifier = 'SomeValidPhpEntry';
$simpleFileBackend = $this->getSimpleFileBackend();
$data = '<?php return "foo";';
$simpleFileBackend->set($entryIdentifier, $data);
$loadedData = $simpleFileBackend->requireOnce($entryIdentifier);
$this->assertEquals('foo', $loadedData);
}