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This page is an introduction to writing and running test. All pages dedicated to testing can be found in CategoryTesting.

Testing Your Launchpad Changes

You might also be interested in Debugging Launchpad.

General usage

The normal pattern for testing your changes is to run the tests you think will be affected locally, but fundamentally we rely on post-merge testing by buildbot.

Iterating with testrepository

apt-get install testrepository
#cd $yourlaunchpaddevdir
testr init

Don't worry about creating a .testr.conf file; the defaults created for you works fine.

To run all the tests: testr run

To run an individual test using the -t PATTERN option: testr run -- -t foo

To see the current known failures: testr failing

To run just the known failing tests: testr run --failing

To re-run the tests:

testr run --failing

To see the current failing tests

testr failing

testr is moving and bug reports and patches are accepted :).

Running old skool

To run the tests, you run the ./bin/test script, which is produced by make build.

You can see all the options you have by running ./bin/test --help.

Usually you will run ./bin/test -vvct PATTERN where PATTERN is a regular expression that is used to filter the tests that will be run.

You can use '!PATTERN' to match all expression not matching that patter. Ex, to run all test, except the one at Windmill layer you can use:

./bin/test -vvc --layer '!Windmill'

Speed up the tests

Since Librarian and MemCache does not change often and they take a long time to be started and shutdown, ./bin/test can leave them started by using this command:


You can kill them using  ./bin/kill-test-services 

When running tests written in python files, and you only want to test a file, you can speed up the test by specifying the full path to the python file:


See this mail for more.

Headless tests

xvfb-run -s '-screen 0 1024x768x24' bin/test YOUR_TEST_ARGUMENTS

Testing Launchpad Translations

Performance and stress tests

== Populate the db ==

To add object into the database you can use:

& env LP_DBNAME="launchpad_dev" make iharness
from canonical.lp import initZopeless
zl = initZopeless()
# use the factory here

Writing tests

For each part of an application there are 2 level of testing:


  1. Unit testing
    • Files locate in lib/lp/<application>/scripts/tests

  2. Integration testing
    • Files locate in lib/lp/<application>/doc


  1. Unit/integration testing
    • Files locate in lib/lp/<application>/browser/tests

    • More details: ViewTests

  2. Smoke testing
    • Files locate in lib/lp/<application>/stories

    • More details: PageTests


  1. Unit testing
  2. XHR integration testing
    • Use sparingly.
    • We use YUI tests with a full appserver behind it.
    • See standard_yuixhr_test_template.js and standard_yuixhr_test_template.py in the root of the Launchpad tree.




Testing (last edited 2020-07-16 16:51:31 by doismellburning)