public function testCreateDocument()
{
$p = new Path('/foo/bar/baz.txt');
$this->assertNull($this->md->getVersion($p));
$this->md->updateDocument($p, 'text/plain');
$this->assertStringMatchesFormat('%s', $this->md->getVersion($p));
$this->assertEquals('text/plain', $this->md->getContentType($p));
}