So I had some functional tests passing on my workstation, but when pushed to CI environment they would fail with an “ElementNotVisibleException
” exception, because scripts which created the element weren’t doing their job.
I wanted to view the browser console.log to get some clues to what went wrong on the front-end.
The selenium docs state to use:
driver.get_log('browser')
But in my case that returned an empty list, not very useful.
I’ve found if you use log type of “har”, not in the docs:
driver.get_log('har')
It will return a bunch information, including, if you look carefully, some “NOT FOUND” errors for for requests triggered by Javascript code.
[{ 'timestamp': 1436900661766, 'message': '{"log":{"version":"1.2","creator":{"name":"PhantomJS","version":"2.0.0"},"pages":[{"startedDateTime":"2015-07-14T19:01:40.795Z","id":"http://myapp.domain.com:8081/people/1","title":"John Smith - MyAppName","pageTimings":{"onLoad":2900}}],"entries":[{"startedDateTime":"2015-07-14T19:03:22.559Z","time":148,"request":{"method":"GET","url":"http://myapp.domain.com:8081/people/1","httpVersion":"HTTP/1.1","cookies":[],"headers":[{"name":"Accept","value":"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"},{"name":"Cache-Control","value":"max-age=0"},{"name":"User-Agent","value":"Mozilla/5.0 (Unknown; Linux x86_64) AppleWebKit/538.1 (KHTML, like Gecko) PhantomJS/2.0.0 Safari/538.1"}],"queryString":[],"headersSize":-1,"bodySize":-1},"response":{"status":200,"statusText":"OK","httpVersion":"HTTP/1.1","cookies":[],"headers":[{"name":"Date","value":"Tue, 14 Jul 2015 19:03:22 GMT"},{"name":"Server","value":"WSGIServer/0.1 Python/2.7.6"},{"name":"Vary","value":"Cookie"},{"name":"X-Frame-Options","value":"SAMEORIGIN"},{"name":"Content-Type","value":"text/html; charset=utf-8"},{"name":"Set-Cookie","value":"csrftoken=wFzWPTm9aVkGLtPuOCcc1tIs6ve5KosW; expires=Tue, 12-Jul-2016 19:03:22 GMT; Max-Age=31449600; Path=/"}],"redirectURL":"","headersSize":-1,"bodySize":5776,"content":{"size":5776,"mimeType":"text/html; charset=utf-8"}},"cache":{},"timings":{"blocked":0,"dns":-1,"connect":-1,"send":0,"wait":140,"receive":8,"ssl":-1},"pageref":"http://myapp.domain.com:8081/people/1"},{"startedDateTime":"2015-07-14T19:03:22.705Z","time":7,"request":{"method":"GET","url":"http://myapp.domain.com:8081/static/js/lib/bower_components/requirejs/require.js","httpVersion":"HTTP/1.1","cookies":[],"headers":[{"name":"Accept","value":"*/*"},{"name":"Referer","value":"http://myapp.domain.com:8081/people/1"},{"name":"User-Agent","value":"Mozilla/5.0 (Unknown; Linux x86_64) AppleWebKit/538.1 (KHTML, like Gecko) PhantomJS/2.0.0 Safari/538.1"}],"queryString":[],"headersSize":-1,"bodySize":-1},"response":{"status":null,"statusText":"Error downloading http://myapp.domain.com:8081/static/js/lib/bower_components/requirejs/require.js - server replied: NOT FOUND","httpVersion":"HTTP/1.1","cookies":[],"headers":[{"name":"Date","value":"Tue, 14 Jul 2015 19:03:22 GMT"},{"name":"Server","value":"WSGIServer/0.1 Python/2.7.6"},{"name":"X-Frame-Options","value":"SAMEORIGIN"},{"name":"Content-Type","value":"text/html"}],"redirectURL":"","headersSize":-1,"bodySize":125,"content":{"size":125,"mimeType":"text/html"}},"cache":{},"timings":{"blocked":0,"dns":-1,"connect":-1,"send":0,"wait":6,"receive":1,"ssl":-1},"pageref":"http://myapp.domain.com:8081/people/1"},{"startedDateTime":"2015-07-14T19:03:22.706Z","time":15,"request":{"method":"GET","url":"http://myapp.domain.com:8081/static/js/lib/bower_components/jquery-ui/themes/ui-lightness/jquery.ui.theme.css","httpVersion":"HTTP/1.1","cookies":[],"headers":[{"name":"Accept","value":"text/css,*/*;q=0.1"},{"name":"Referer","value":"http://myapp.domain.com:8081/people/1"},{"name":"User-Agent","value":"Mozilla/5.0 (Unknown; Linux x86_64) AppleWebKit/538.1 (KHTML, like Gecko) PhantomJS/2.0.0 Safari/538.1"}],"queryString":[],"headersSize":-1,"bodySize":-1},"response":{"status":null,"statusText":"Error downloading http://myapp.domain.com:8081/static/js/lib/bower_components/jquery-ui/themes/ui-lightness/jquery.ui.theme.css - server replied: NOT FOUND","httpVersion":"HTTP/1.1","cookies":[],"headers":[{"name":"Date","value":"Tue, 14 Jul 2015 19:03:22 GMT"},{"name":"Server","value":"WSGIServer/0.1 Python/2.7.6"},{"name":"X-Frame-Options","value":"SAMEORIGIN"},{"name":"Content-Type","value":"text/html"}],"redirectURL":"","headersSize":-1,"bodySize":154,"content":{"size":154,"mimeType":"text/html"}},"cache":{},"timings":{"blocked":0,"dns":-1,"connect":-1,"send":0,"wait":15,"receive":0,"ssl":-1},"pageref":"http://myapp.domain.com:8081/people/1"}]}}', 'level': 'INFO' }]
So with that I found JS assets weren’t being compiled in my CI environment and was able to go ahead and fix it :)
Hopefully that’s useful to someone out there.
Very useful, thank you!