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OCPBUGS-99533: Add Additional Storage Support - API validation test cases #31418

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OCPBUGS-99533: Add Additional Storage Support - API validation test cases #31418

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41 changes: 41 additions & 0 deletions test/extended/node/README.md
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Expand Up @@ -9,6 +9,47 @@ This directory contains OpenShift end-to-end tests for node-related features.
- **kubeletconfig_features.go** - Tests applying KubeletConfig to custom machine config pools, requires node reboots
- **kubelet_secret_pulled_images.go** - Tests kubelet credential verification for image pulls (`KubeletEnsureSecretPulledImages` feature gate). Covers multi-tenancy isolation, credential rotation, ImagePullPolicy behavior, credential verification policy (NeverVerify/AlwaysVerify), and registry availability scenarios. Requires `TechPreviewNoUpgrade` or `CustomNoUpgrade` FeatureSet.

### Suite: openshift/conformance/parallel

- **Additional Storage Support API Validation** - API validation tests for additionalArtifactStores, additionalImageStores, and additionalLayerStores CRI-O configuration

**Availability:**
- **OCP 4.22:** TechPreview (requires TechPreviewNoUpgrade feature gate)
- **OCP 4.23+/5.0+:** GA (Generally Available)

**Suite:** `openshift/conformance/parallel`
**Feature Tag:** `[Feature:AdditionalStorageSupport]`
**Sig Tag:** `[sig-node]`
**OCPFeatureGate:** `AdditionalStorageConfig`

**Test File:**
- **additional_storage_api.go** - 13 API validation tests using DryRun (non-disruptive, parallel execution)
- Combined Additional Stores (3 tests): invalid paths, max count enforcement, duplicate detection
- Additional Layer Stores (8 tests): comprehensive path validation (empty, relative, spaces, special chars, length, max count, consecutive slashes, duplicates)
- Additional Image Stores (1 smoke test): path validation wiring
- Additional Artifact Stores (1 smoke test): path validation wiring

**Requirements:**
- AdditionalStorageConfig feature gate must be enabled
- API tests are non-disruptive (use DryRun)
- Run in parallel with other conformance tests
- Skip on MicroShift (no MachineConfig support)
- Skip on Microsoft Azure (known platform issues)

**Running API validation tests:**
```bash
# Run only Additional Storage API validation tests (fast, non-disruptive)
./openshift-tests run "openshift/conformance/parallel" --dry-run | \
grep "\[Feature:AdditionalStorageSupport\]" | \
./openshift-tests run -f -
```

**Test Coverage (13 tests, ~2-3 min total):**
- Path format validation (absolute paths, character restrictions, length limits)
- Count limits enforcement (5 for artifact/layer stores, 10 for image stores)
- Duplicate path detection within store types
- Combined store configurations with invalid paths

### Suite: openshift/usernamespace

- **nested_container.go** - Tests running nested containers (podman-in-pod) with user namespaces and nested-container SCC
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