All bugfixes require a test case which demonstrates the defect. The

test should *fail* before the change, and *pass* after the change.

All pull requests that modify executable code should also include a test case

and must be subjected to continuous integration tests on the

[project CI server](https://ci.nodejs.org/). The pull request should have a CI

status indicator.

Do not land any Pull Requests without passing (green or yellow) CI runs. If you

believe any failed (red or grey) CI sub-tasks are unrelated to the change in the

Pull Request, use "Resume Build" in the left navigation of the relevant

`node-test-pull-request` job. It will create a new `node-test-pull-request` run

that preserves all the green results from the current job but re-runs everything

else.