public function testInvalidGitFlowPresetWithNoBranches($source)
{
$validator = new MergeWorkflowValidator(MergeWorkflowValidator::PRESET_GIT_FLOW);
$this->setExpectedException(MergeWorkflowException::class, 'Git-flow: Only "develop", "hotfix-" or "release-" branches are allowed to be merged into master.');
$validator->validate($source, 'master');
}