The WebRTC-in-Chrome implementation is built on the code you find in code.webrtc.org. This code includes two libraries: webrtc and libjingle. In order to ensure the quality of those libraries, we have a ton of unit tests and integration tests for those libraries. These tests can be built and run by developers, and they also run in the Chrome continuous integration system at build.chromium.org. You can see those here:
Furthermore, there’s a lot of code in Chromium which uses the webrtc and libjingle libraries to implement the WebRTC web standard. There’s a bunch of tests for that too, which run here:
When you submit a patch to webrtc or libjingle, it will first run in the client.webrtc waterfall to ensure you change is sound on the library level. When we roll the WebRTC and libjingle versions in Chrome (which happens roughly once a week) you change will be tested against all the WebRTC-in- Chrome tests to ensure the change is OK. If your change breaks something on some level, it will be reverted and you’ll get a chance to fix and re-submit.
Want to Add a Test?
It is a very good idea to add tests if you use webrtc.org code and want your particular way of using it to be protected from unintentional breakage. If you don’t have a test, other developers will break your application without even knowing it! Feel free to write an issue if you want to come into contact with the main WebRTC devs and discuss collaborating about tests.
WebRTC and libjingle Tests
Like we said earlier, these tests run here. The waterfall is a bit tricky to understand, but essentially each build bot will compile as soon as a patch is submitted to code.webrtc.org and run all the tests we have on it. For instance, video_engine_tests will run tests on the WebRTC video engine.
If you have made a change and want to run all the relevant WebRTC browser tests, you need to build the browser_tests and content_browsertests targets in your Chromium checkout. First, ensure you have a working webcam plugged in. Then run
out/Debug/content_browsertests --gtest_filter="WebRtc*" --run-manual
out/Debug/browser_tests --gtest_filter="WebRtcBrowserTest*" --run-manual
If all those pass, you’re probably good.
Continuous Conformance Tests
See the Conformance testing page.