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helmfile/test/integration/test-cases/include-template-func.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

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include_template_func_case_input_dir="${cases_dir}/include-template-func/input"
include_template_func_case_output_dir="${cases_dir}/include-template-func/output"
config_file="helmfile.yaml.gotmpl"
include_template_func_template_out_file=${include_template_func_case_output_dir}/template-result
if [[ $EXTRA_HELMFILE_FLAGS == *--enable-live-output* ]]; then
include_template_func_template_out_file=${include_template_func_case_output_dir}/template-result-live
fi
include_template_func_template_tmp=$(mktemp -d)
include_template_func_template_reverse=${include_template_func_template_tmp}/include_template_func.template.build.yaml
test_start "include_template_func template"
info "Comparing include_template_func template output ${include_template_func_template_reverse} with ${include_template_func_case_output_dir}/result.yaml"
for i in $(seq 10); do
info "Comparing build/include_template_func-template #$i"
${helmfile} -f ${include_template_func_case_input_dir}/${config_file} template --concurrency 1
${helmfile} -f ${include_template_func_case_input_dir}/${config_file} template --concurrency 1 &> ${include_template_func_template_reverse} || fail "\"helmfile template\" shouldn't fail"
diff -u ${include_template_func_template_out_file} ${include_template_func_template_reverse} || fail "\"helmfile template\" should be consistent"
done
test_pass "include_template_func template"