DSS testing

All of the tests below except the Interoperability tests are run as part of continuous integration before a pull request is approved to be merged.

Unit tests

Source code is often accompanied by *_test.go files which define unit tests for the associated code. All unit tests for the repo may be run with the following command from the root folder of the repo: ```shell script make test

The above command skips the CockroachDB tests because a `store-uri` argument is
 not provided.  To perform the CockroachDB tests, run the following command
 from the root folder of the repo:
```shell script
make test-cockroach

Integration tests

For tests that benefit from being run in a fully-constructed environment, the make test-e2e from the repo root folder sets up a full environment and runs the prober tests in that environment. Docker is the only prerequisite to running this end-to-end test on your local system.

For repeated tests without changes to the DSS, the local DSS instance can be brought up initially with make start-locally, then the prober tests can be run repeatedly with make probe-locally without needing to rerun make start-locally. To capture DSS logs, run make collect-local-logs. To bring down the local DSS instance at the conclusion of testing, run make stop-locally or make down-locally.

When developing or troubleshooting features with the help of the USS qualifier where it might be useful to quickly iterate on changes both in the DSS and in a qualifier scenario, an option is to:

1. build the DSS image locally via make build-dss
2. use the locally built version (interuss-local/dss:latest) in the docker-compose file that defines the qualifier’s local test environment
3. start or restart the local USS qualifier deployment via make restart-all (in the monitoring repository)
4. run the USS qualifier with a pre-packaged configuration such as f3548_self_contained or dss_probing in the monitoring repo. Eg, ./run_locally.sh configurations.dev.f3548_self_contained from within the monitoring/uss_qualifier directory of the qualifier repository.

Running a subset of tests

To run a specific test in the prober test suite, simply add its name as the first argument to the script to run prober locally (this is the same script make probe-locally uses). For example: shell script ./build/dev/probe_locally.sh scd/test_constraint_simple.py ./build/dev/probe_locally.sh scd/test_constraint_simple.py::test_ensure_clean_workspace

Examining Core Service logs

After a make probe-locally run, the Core Service logs can be examined in the Core Service container (usually dss_sandbox-local-dss-core-service-1) or dumped to core-service-for-testing.log using make collect-local-logs.

Continuous integration

The other tests involved in continuous integration presubmit checks are described in the continuous integration folder.