This page compares mochitest runs in firefox vs. fennec.

Firefox maintains a set of 72000+ mochitests, 2600+ reftests which run clean on each build. For Fennec, we are trying to achieve the same target. One big difference we have when running Fennec on a device is there is limited memory, cpu, and disk. To resolve this, we run the tests one directory at a time, instead of as 1 single run. Afterwards we merge the logs together to make a single log outlining the whole mochitest run.

This table displays the test files which do not return the same results when run in firefox vs fennec. In addition, we run Fennec on the linux desktop as well as on the maemo (Nokia N810). The results assume the Firefox run is the baseline and if the Fennec results are different we mark them in "red" to indicate there is something wrong and needs investigation.