A fully-automated testing rig #7

5th Aug 2014

Part 7: When this.mouse.click doesn't work

mouse.click and mouse.move are a really helpfuls function in CasperJS, but we have at times found that they just don't work. Mostly, that's been because the element isn't there to click on. Do make sure that it's actually there! Make sure you're using the right selector, too. Try a casper.capture() to see whether it's there, but be wary of timings to ensure that you get a capture for the moment that you want to be performing the mouse action.

If all else fails, and in one test script nothing at all would...

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A fully-automated testing rig #6

29th Jul 2014

Part 6: Manually fail a test, but continue script execution

We set up an event to take screenshots of failed test pages, by hooking into the onFail event. This made for a problem when we wanted to pass or fail a test based on whether there were entries in the Drupal Watchdog table. Failing a test also would normally stop script execution, but we explicitly need our post script to finish its work!

CasperJS fortunately allows you both to pass and fail tests manually, and also to create your own events. We created a manual_fail event in our pre script,...

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A fully-automated testing rig #5

22nd Jul 2014

Part 5: Fun with viewports, and THEN some

As I described previously, we nicely externalised our list of viewport sizes, making it really easy to set our viewports for mobile, tablet and desktop tests. Our content appearance tests put this to good use, taking screenshots of the content at mobile, tablet and desktop resolutions. The problem we very quickly ran into was that we frequently ended up with empty screenshots, or sometimes no screenshot at all. This is where the asynchronous fun began.

The official walkthrough for CasperJS' "step stack" gives a very brief introduction to the idea that navigation...

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A fully-automated testing rig #4

15th Jul 2014

Part 4: When TrueType doesn't fix everything

Two fonts walk into the bar, and the barman says, “Sorry lads, we don’t serve your type.”

It was a good day. I'd finished writing up the basic appearance tests for the first batch of content types, I'd road-tested them on my machine, we'd set up Jenkins… all was ready to go for our first run on the server. When we ran it, however, all the tests failed against the baseline.

Every single one.

Things started to get tense as it became clear that the solution was no trivial matter: we were experiencing...

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