to implement Quality-Of-Service assertions (latency)

[yegor256]

migrated from Trac, where originally posted by yegor256 on 22-Aug-2010 8:01am

Would be nice to have latency test:

<?php
class QosTest extends PhpRack_Test
{
    public function testLatency()
    {
        $this->assert->qos->latency(
            'http://www.example.com'
        );
    }
}

This way we can implement self-testable platforms.

[yegor256]

migrated from Trac, where originally posted by yegor256 on 22-Aug-2010 8:02am

Adrian, what do you think? Can you implement it in 2 hours? If yes, please go ahead.

[yegor256]

migrated from Trac, where originally posted by yegor256 on 23-Aug-2010 4:44am

More extensive example:

<?php
class QosTest extends PhpRack_Test
{
    public function testLatency()
    {
        $this->assert->qos->latency(
            array(
                'scenario' => array(
                    'http://www.example.com',
                    '/index',
                    '/user-profile/' .  rand(1, 99),
                ),
                'averageMs' => 500, // 500ms average per request
                'peakMs' => 2000, // 2s maximum per request
            ),
        );
    }
}

[yegor256]

migrated from Trac, where originally posted by yegor256 on 23-Aug-2010 4:47am

latency() accepts one argument, which is either a string (URL of the web page to test), or an array with parameters (default values are in squared brackets):

• "scenario" - list of URLs which should be tested on every cycle, one by one
• "averageMs" - maximum time allowed per request, as an average, in milliseconds ![500]
• "peakMs" - peak amount of time per request, in milliseconds ![1500]
• "testsTotal" - how many requests should be made ![50]

[yegor256]

migrated from Trac, where originally posted by netcoderpl on 24-Aug-2010 2:11pm

I have two questions

In "scenario" first url is absolute, and next are relative. It will be always true? How we will determine correct host if first url is relative?

"testsTotal" - It mean requests or cycles? Each url should be checked by default 50 times or our method should make totally 50 requests?

[yegor256]

migrated from Trac, where originally posted by yegor256 on 26-Aug-2010 5:19am

Let's skip the relative URLs. All URLs should be absolute. If not, we will throw an exception.

testsTotal means the total amount of requests made. testsTotal=50 means that we will make 50 HTTP requests in total. If there are two URLs, every one of them will receive 25 requests.

[yegor256]

migrated from Trac, where originally posted by netcoderpl on 26-Aug-2010 3:52pm

In [652]:

#CommitTicketReference repository="" revision="652"
refs #72 - new branch created

[yegor256]

migrated from Trac, where originally posted by netcoderpl on 26-Aug-2010 3:53pm

In [653]:

#CommitTicketReference repository="" revision="653"
refs #72 - implemented

[yegor256]

migrated from Trac, where originally posted by netcoderpl on 26-Aug-2010 3:54pm

Please review.

[yegor256]

migrated from Trac, where originally posted by yegor256 on 27-Aug-2010 8:25am

In [654]:

#CommitTicketReference repository="" revision="654"
refs #72 - implemented in branch and merged into trunk

[yegor256]

migrated from Trac, where originally posted by yegor256 on 27-Aug-2010 8:26am

In [655]:

#CommitTicketReference repository="" revision="655"
refs #72 - phpcs fixes

[yegor256]

migrated from Trac, where originally posted by yegor256 on 27-Aug-2010 8:35am

[wiki:Assertions@21] updated

[yegor256]

migrated from Trac, where originally posted by yegor256 on 27-Aug-2010 8:35am

In [656]:

#CommitTicketReference repository="" revision="656"
closes #72 - branch closed

[yegor256]

migrated from Trac, where originally posted by yegor256 on 27-Aug-2010 8:36am

many thanks!