verify-generate.sh

#!/usr/bin/env bash

#####
#  Used to ensure that running `make generate` results in a non-dirty repository.
#  Used to verify that make generate wasn't forgotten for changes that may require generation.
#####

set -o nounset
set -o pipefail
# intentionally not setting 'set -o errexit' because we want to print custom error messages

# versions of tools
echo "controller-gen $(controller-gen --version)"

# make sure make generate can be invoked
make generate
RETVAL=$?
if [[ ${RETVAL} != 0 ]]; then
    echo "Invoking 'make generate' ends with non-zero exit code."
    exit 1
fi

git diff --exit-code --quiet
RETVAL=$?

if [[ ${RETVAL} != 0 ]]; then
    echo "Running 'make generate' produces changes to the current git status. Maybe you forgot to check-in your updated generated files?"
    echo "The current diff:"
    git diff
    exit 1
fi

echo "Verifying 'make generate' was successful! ヽ(•‿•)ノ"
exit 0