/**
* Add an XML namespace to the set of namespaces
* @param $namespaceURI The URI of the namespace you want to get a prefix for.
* @return string a prefix, including the trailing colon.
*/
public function testPrefixAndToXML()
{
$obj = new DAV_Namespaces();
$this->assertSame('', $obj->toXML(), 'Before adding additional namespaces, no namespaces should be returned');
$obj->prefix('tests://test/');
$obj->prefix('tests://more_tests/');
$obj->prefix('tests://test/');
// We add this twice to test if it is only returned once
$this->assertSame(' xmlns:ns1="tests://test/" xmlns:ns2="tests://more_tests/"', $obj->toXML(), 'After adding additional namespaces, the two additional namespaces should be returned');
}
