n/test/tests.md

Tests

Automated tests for n.

Setup

Optional proxy using mitmproxy:

# using homebrew (Mac) to install mitmproxy
brew install mitmproxy

Running Tests

Run all the tests across a range of containers and on the host system:

npm run test

Run all the tests on a single system:

cd test
npx bats tests
docker-compose run ubuntu-curl bats /mnt/tests

Run single test on a single system::

cd test
npx bats tests/install-contents.bats
docker-compose run ubuntu-curl bats /mnt/tests/install-contents.bats

Proxy

To speed up running tests multiple times, you can optionally run a caching proxy for the node downloads. The curl settings are modified to allow an insecure connection through the mitm proxy.

cd test
bin/proxy-build
bin/proxy-run
# follow the instructions for configuring environment variables for using proxy, then run tests

node versions added to proxy cache (and used in tests):

• v4.9.1
• lts
• latest

Docker Tips

Using docker-compose in addition to docker for convenient mounting of n script and the tests into the container. Changes to the tests or to n itself are reflected immediately without needing to rebuild the containers.

bats is being mounted directly out of node_modules into the container as a manual install based on its own install script. This is a bit of a hack, but avoids needing to install git or npm for a full remote install of bats, and means everything on the same version of bats.

The containers each have:

• either curl or wget (or both) installed

Using docker-compose to run the container adds:

• specified n script mounted to /usr/local/bin/n
• test/tests mounted to /mnt/tests
• node_modules/bats provides /usr/local/bin/bats et al
• .curlrc with --insecure to allow use of proxy

So for example:

cd test
docker-compose run ubuntu-curl
  # in container
  n --version
  bats /mnt/tests