feat(config)!: add deep merge for drop-in configs and SIGHUP reload tests #1
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…ests
Refactors drop-in configuration loading to use deep merge strategy:
- Add DefaultDropInConfigDir constant ("conf.d") for auto-discovery
- Implement deepMerge() for recursive merging of nested config maps
- Merge raw TOML maps before parsing to preserve extended configs
(cluster_provider_configs, toolset_configs) across multiple drop-ins
- Simplify Read() signature to (configPath, dropInConfigDir string)
- Auto-resolve relative drop-in paths against config file directory
Add comprehensive test coverage:
- Unit tests for deepMerge() function (flat, nested, type mismatch, arrays)
- Tests for default conf.d auto-discovery and resolution
- Tests for standalone --config-dir mode without main config
- Tests for extended config merging across multiple drop-in files
- SIGHUP signal handler integration tests verifying:
- Config reload from file triggers tool updates
- Drop-in directory changes are reloaded
- Invalid config gracefully continues with old config
- Config-dir only mode works with SIGHUP
Signed-off-by: Marc Nuri <[email protected]>
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Refactors drop-in configuration loading to use deep merge strategy:
Add comprehensive test coverage: