== Introduction ==

ISSM relies on regression tests to check that no bug is introduced during code development. All the tests are located in `$ISSM_DIR/test/test/NightlyRun` and all the tests whose number are less than 1000 are run after each change pushed to the svn repository (through jenkins: https://ross.ics.uci.edu/jenkins/) and 4 times a day (through cron jobs). See [wiki:addnewNR here] for more information on nightly runs.

 == Identifying a problem ==

The home page of jenkins should look like this:

[[Image(Screen Shot 2019-02-06 at 8.38.58 AM.png)]]

The yellow balls indicate that some tests failed. You should click on Linux_Ubuntu to see which test failed. This brings you to the following page that shows the number of tests that failed:

[[Image(Screen Shot 2019-02-06 at 8.46.49 AM.png)]]

You can click on "Latest test results" to get the list of tests that failed:

[[Image(Screen Shot 2019-02-06 at 8.46.58 AM.png)]]

You can then click on the test, and see what failed. It could be that the tolerance is just a bit tight, which would be a false positive, but not always. 

[[Image(Screen Shot 2019-02-06 at 8.47.11 AM.jpg​)]]

If the code failed to compile, click on "Console Output" and you should be able to see the error message and correct it.