public function testListVersions()
{
$handler = $this->getContentHandler();
$treeHandlerMock = $this->getTreeHandlerMock();
$treeHandlerMock->expects($this->once())->method('listVersions')->with(23)->will($this->returnValue(array(new VersionInfo())));
$versions = $handler->listVersions(23);
$this->assertEquals(array(new VersionInfo()), $versions);
}