private function testFrameworkWarning($output)
{
$testFramework = $this->settings->getTestingFramework();
if (!in_array($testFramework, $this->defaults->testingFrameworks)) {
$warning = '<error>Warning: "' . $testFramework . '" is not a supported testing framework. ' . 'Using ' . Defaults::TEST_FRAMEWORK . '.</error>';
$output->writeln($warning);
$testFramework = Defaults::TEST_FRAMEWORK;
}
return $testFramework;
}