public function testClearAll()
{
$result = (object) array('a' => 123);
$this->requestCache->put('TestCommand', 'cache-key-123', $result);
$this->assertEquals($result, $this->requestCache->get('TestCommand', 'cache-key-123'));
$this->requestCache->clearAll('TestCommand');
$this->assertNull($this->requestCache->get('TestCommand', 'cache-key-123'));
}