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README.md

kind-Based Integration Testing

This test framework has a two-fold goal: provide a short iterating cycle for work on HyperShift operators locally as well as a quick validation harness for features that do not require cloud-provider-specific functionality.

Local Operation

The run.sh script allows for local iteration on HyperShift - use a shell to set up the environment and keep it running, while using other shells to interact with the environment or even iterate on tests.

Prerequisites

Make sure you have kind and some container image building utility (docker, buildah, podman) installed. Keep an eye out for too many open files errors when launching HostedClusters and apply the remedy.

An image is built by copying local binaries into a base container. Ensure the script knows how to map your local operating system to a host container image, or you will have issues with dynamic linking.

Visit the web console to create a local pull secret - this is required to interrogate OCP release bundles.

Set up the following environment variables:

export PATH="${PATH}:$(realpath ./bin)"
export WORK_DIR=/tmp/integration # this directory is persistent between runs, cleared only as necessary
export PULL_SECRET="REPLACE-ME"  # point this environment variable at the pull secret you generated

Setup

Run the following in a shell - the process will set up the kind cluster and requisite hypershift infrastructure, then wait for SIGINT indefinitely. On interrupt, the process will clean up after itself.

TODO: add some mechanism to choose which tests the setup runs for

./test/integration/run.sh \
  cluster-up \ # start the kind cluster
  image \      # build the container image for HyperShift, load it into the cluster
  setup        # start the HyperShift operator and any HostedClusters for selected tests

Tests

Run the following for quick iteration - the test process will expect that setup is complete. Use ${GO_TEST_FLAGS} to specify what subset of the tests to run.

./test/integration/run.sh \
  test # run tests

Running A Subset Of Tests

When running the setup or test targets in run.sh, provide $GO_TEST_FLAGS='-run selector' to only set up and run some subset of tests.

Refreshing Image Content

When you've made changes to the HyperShift codebase and need to re-deploy the operators, run the following - a new image will be built, loaded into the cluster, and all Pods deploying the image will be deleted, so the new image is picked up on restart.

./test/integration/run.sh \
  image \ # build the container image for HyperShift, load it into the cluster
  reload  # power-cycle all pods that should be running the image