public function testCreateMetric($client)
{
$name = uniqid(self::TESTING_PREFIX);
$filter = 'severity >= DEBUG';
$options = ['description' => 'A description.'];
$this->assertFalse($client->metric($name)->exists());
$metric = $client->createMetric($name, $filter, $options);
self::$deletionQueue[] = $metric;
$this->assertTrue($client->metric($name)->exists());
$this->assertEquals($filter, $metric->info()['filter']);
$this->assertEquals($options['description'], $metric->info()['description']);
}