public function testInvokeFlow()
{
$file = $this->makeFile('move/invoke/source', 'some text');
$target = $this->makeFile('move/invoke/target');
$flow = Flow::moveFile($target);
$output = call_user_func($flow, $file);
static::assertSame($target, $output);
static::assertInstanceOf(FileNode::class, $output);
static::assertEquals(['some text'], $output->getContents());
static::assertFalse($file->exists(), "The original file should still exist");
}
