* test(ecstore): unit-test TierConfigMgr add/edit/remove/verify state machine (backlog#1148 ilm-4)
Covers the tier config state machine and persistence paths that previously
had only 4 codec tests and none for tier_config.rs:
- add: non-uppercase name, duplicate name, unsupported type, missing
backend payload, and a regression anchor documenting that AWS-reserved
names (STANDARD) are not currently rejected.
- edit: unknown tier, missing-credentials rejection for RustFS and MinIO.
- remove: idempotent unknown-tier no-op, in-use rejection, empty-backend
success, force skips the in_use probe, and probe-error surfacing.
- verify: unknown tier, healthy backend, unhealthy backend.
- pure query helpers (empty/is_tier_valid/tier_type/get/list_tiers).
- persistence: JSON marshal/unmarshal roundtrip, external tier-config.bin
roundtrip for Azure and GCS payload mapping, truncated/unknown-format/
unknown-version rejection, legacy v1 version-word acceptance, and encode
failure on missing payload.
Tests are hermetic: error paths return before backend construction, and a
MockWarmBackend injected into driver_cache exercises remove/verify without
any real remote. Refs backlog#1155.
Co-authored-by: overtrue <anzhengchao@gmail.com>
* fix(tier): reject reserved names STANDARD/RRS in TierConfigMgr::add (backlog#1148 ilm-4) (#4721)
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