Skip file screen shot if current image equals last

[elgalu]

Thanks for the screen shot reporter @swissmanu is very handy :)

My tests runs are big and generate 100's of png MB per day!

I was thinking about integrating http://huddle.github.io/Resemble.js/ to avoid saving the same image twice by using the server-side fork of resemble.js

What do you think about this feature? We may need to wrap the onComplete callback in a webdriver promise to make the scheduler wait for it before moving on.

[swissmanu]

this sounds like a cool enhancement @elgalu!

the "architecture" (to call it so ;) ) of the current implementation would need some refactoring to register multiple handlers after a screenshot was taken. maybe even the current meta data generation could be implemented using such a handler.

i'll add your suggestion as a possible future feature. maybe you have some spare time to invest? personally, i'm quite busy at the moment.

[elgalu]

I'm glad you liked the idea, for now i realized that the following conditional satisfy my requirement for most cases:

if (lastBase64png !== currentPng) {
    lastBase64png = currentPng; // store a reference to last saved png
    util.storeScreenShot(currentPng, screenShotPath);
    screenShotFile = baseName + '.png';
} else {
    screenShotFile = 'screen shot skipped because equals last one.';
}

So maybe Resemble.js is overkill, feel free to close this issue!

[swissmanu]

cool you solved your requirement.

i'm gonna keep these thoughts in mind... maybe i can improve the reporters code anyway to make it more flexible in future.