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helmfile/test/integration/test-cases/skip-diff-output.sh
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Aditya Menon 4f275b3667 feat: add Helm 4 support while maintaining Helm 3 compatibility (#2262)
This commit adds comprehensive support for Helm 4 while maintaining
full backward compatibility with Helm 3. The implementation includes:

- Updated helm version detection to support both Helm 3 and Helm 4
- Added HELMFILE_HELM4 environment variable to control Helm version
- Modified helm execution paths to handle version-specific binaries
- Updated helm plugin installation to support split architecture

- Helm 4: Uses split plugin architecture (3 separate .tgz files)
  - helm-secrets.tgz
  - helm-secrets-getter.tgz
  - helm-secrets-post-renderer.tgz
- Helm 3: Continues using single plugin installation
- Updated Dockerfiles, CI workflows, and core installation code

- Helm 4 requires post-renderers to be plugins, not executable scripts
- Created Helm plugin structure for integration tests
- Updated helmfile.yaml templates to dynamically select renderer type
- Added test plugins: add-cm, add-cm1, add-cm2

- Updated integration tests for Helm 3/4 compatibility
- Created Helm 4 variant expected output files
- Fixed test determinism issues (repo cleanup between iterations)
- Added version-specific output filtering for warnings/messages

- Updated workflows to test both Helm 3 and Helm 4
- Matrix testing across Helm versions
- Updated helm-diff to v3.14.0 for compatibility

- Updated README and docs with Helm 4 information
- Added migration guidance
- Updated version requirements

All changes are backward compatible - existing Helm 3 users will
see no behavior changes.



fix: update Helm 4 lint expected output to match filtered output

The grep filter removes the semver warning, so the expected output
should not include it. Updated lint-helm4 files to match the filtered
output (warning removed, no extra blank line).

Signed-off-by: Aditya Menon <amenon@canarytechnologies.com>
2025-11-19 07:49:30 +08:00

32 lines
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skip_diff_output_input_dir="${cases_dir}/skip-diff-output/input"
skip_diff_output_output_dir="${cases_dir}/skip-diff-output/output"
skip_diff_output_tmp=$(mktemp -d)
skip_diff_output_reverse=${skip_diff_output_tmp}/skip.diff.output.build.yaml
case_title="skip diff output"
diff_out_file=${skip_diff_output_output_dir}/diff-result
template_out_file=${skip_diff_output_output_dir}/template-result
if [[ $EXTRA_HELMFILE_FLAGS == *--enable-live-output* ]]; then
diff_out_file=${skip_diff_output_output_dir}/diff-result-live
fi
test_start "$case_title"
info "Comparing ${case_title} diff for output ${skip_diff_output_reverse} with ${diff_out_file}"
for i in $(seq 10); do
info "Comparing skip-diff-output diff log #$i"
${helmfile} -f ${skip_diff_output_input_dir}/helmfile.yaml.gotmpl diff > ${skip_diff_output_reverse}.tmp || fail "\"helmfile diff\" shouldn't fail"
cat ${skip_diff_output_reverse}.tmp | sed -E '/\*{20}/,/\*{20}/d' > ${skip_diff_output_reverse}
diff -u ${diff_out_file} ${skip_diff_output_reverse} || fail "\"helmfile diff\" should be consistent"
done
info "Comparing ${case_title} template for output ${skip_diff_output_reverse} with ${template_out_file}"
for i in $(seq 10); do
info "Comparing skip-diff-output template log #$i"
${helmfile} -f ${skip_diff_output_input_dir}/helmfile.yaml.gotmpl template > ${skip_diff_output_reverse} || fail "\"helmfile template\" shouldn't fail"
diff -u ${template_out_file} ${skip_diff_output_reverse} || fail "\"helmfile template\" should be consistent"
done
test_pass "$case_title"