Ticket #9893 (assigned)
Slow Unit Tests for Peter Peterson
Reported by: | Owen Arnold | Owned by: | Peter Peterson |
---|---|---|---|
Priority: | major | Milestone: | Release 3.5 |
Component: | Framework | Keywords: | Maintenance |
Cc: | Blocked By: | ||
Blocking: | Tester: |
Description
We have a number of slow running unit tests which we need to fix as part of the 3.3 maintenance window. We are targeting test suits than execute in > 2 seconds on our clean rhel6 build servers. For IO tests (Loading & Saving) we have applied a more generous threshold of > 5 seconds.
See the full list to see which tests have been assigned to you: http://www.mantidproject.org/images/2/2f/Slow_tests.xlsx_-_Sheet1.pdf
Criteria
- Test suits (each test class instance) should execute in < 1 second as a rough target
- As a corollary to the above, If the test suite contains lots of test methods aim for < 0.1 second per test method
- If for some reason you get the speed up the test below the target using the strategies listed below, you need to justify why when you close the ticket.
Guidelines/instructions to help
- Keep tests readable and improve code readability where possible. Unit tests are documentation.
- Do not delete test methods without good reason. We do not want to reduce test coverage
- Changing the algorithm code to improve speed is OK, but exercise caution. Add additional test coverage if it's not already good enough.
- Take test methods that are slow and involve IO, or are processor intensive and make them into system tests. Integration tests are not Unit tests.
- Most of the speed improvements will probably come from better selection of input data. Caching input data is also a good option.
- Create sub tickets for algorithms or groups of algorithms to help testability if you wish, but mark this ticket as the 'blocked' by each one.
Change History
comment:2 Changed 6 years ago by Owen Arnold
Pete, I expect that you will delegate some of these refactoring steps to other developers at the SNS.
comment:4 Changed 6 years ago by Owen Arnold
- Blocking 9905 removed
- Milestone changed from Release 3.3 to Release 3.4
Not realistically going to get done for 3.3.
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