--- /dev/null
+<?php
+
+class Sabre_CalDAV_VersionTest extends PHPUnit_Framework_TestCase {
+
+ function testString() {
+
+ $v = Sabre_CalDAV_Version::VERSION;
+ $this->assertEquals(-1, version_compare('1.0.0',$v));
+
+ $s = Sabre_CalDAV_Version::STABILITY;
+ $this->assertTrue($s == 'alpha' || $s == 'beta' || $s =='stable');
+
+ }
+
+}