public function getFetchesStringValueFromBackend()
{
$backend = $this->prepareDefaultBackend();
$backend->expects($this->once())->method('get')->will($this->returnValue(serialize('Just some value')));
$cache = new VariableFrontend('VariableFrontend', $backend);
$this->assertEquals('Just some value', $cache->get('VariableCacheTest'), 'The returned value was not the expected string.');
}