¬ just serendipity 🍀 (not just serendipity)

Lately I’ve been employing (with great success) the following pattern in order to test whether changes to helm charts are harmless (and expected):

cd path/to/my/helm/chart
git checkout origin/master  # or main
helm template -f values.yaml . > golden
git switch --create thiagowfx/my-feature-branch
# develop, develop, develop
helm template -f values.yaml . > candidate
diff candidate golden  # or icdiff

The diff output will reliably demonstrate whether your changes are WAI.

Note: If needed, pass --release-name {foo} to helm template.

This pattern is comparable to running a golden helm install followed by a helm-diff (helm diff upgrade) candidate in the cluster.