test(bdd): assert Kubernetes resource YAML subsets

[sbaum1994]

TL;DR

Add a table-free BDD step that asserts an explicit Kubernetes resource contains a readable YAML subset. Migrate suitable observability and EKS JSONPath checks while preserving their asserted values.

Additional Details

Why

Repeated kubectl get ... -o jsonpath=... commands make feature files harder to scan and scatter command-exit assertions around the behavior being verified. The new step keeps the resource, namespace, context, and expected configuration visible while centralizing safe command execution and YAML comparison.

What changed

• Add Kubernetes resource "<kind>/<name>" in namespace "<namespace>" using context "<context>" should contain: to the BDD catalog.
• Reuse the YAML subset matcher with interpolation and strict list ordering.
• Keep mismatch errors limited to the resource identity and YAML path so resource output and secret-bearing values are not echoed.
• Migrate collector target-allocator, HTTPRoute hostname, and task-service ConfigMap assertions that fit this abstraction.
• Leave value-capture commands, readiness waits, and list-filter queries explicit because they represent different user operations.

Customer Release Notes

Not customer visible.

Plan Summary

Not applicable. This changes test DSL and BDD scenarios only.

Usage

Then Kubernetes resource "OpenTelemetryCollector/nvcf" in namespace "monitoring" using context "k3d-ncp-local" should contain:
  """
  spec:
    targetAllocator:
      enabled: true
  """

Dependencies

None. No license review or NOTICE update is needed.

For the Reviewer

The main abstraction boundary is in tests/bdd/steps/assertion_steps.go. The DSL deliberately handles assertions only; commands that capture values or wait for transitions remain visible in the feature files.

For QA

Validated locally with the dedicated ncp-local k3d kubeconfig:

• go test -short ./...
• golangci-lint run --config .golangci.yml ./...
• TestObservabilityCompute: fresh multi-cluster topology, 43/43 steps passed
• TestObservabilityControl: fresh single-cluster topology, 17/17 steps passed
• TestObservabilityAll: fresh single-cluster topology, 35/35 steps passed

The first compute bootstrap found that the clean worktree lacked the ignored machine-local registry credential file. After restoring that prerequisite, the fresh run passed. A retained-topology cross-profile attempt also kept prior observability release state and constrained API Keys startup; the required fresh-topology rerun passed without a product change.

EKS scenarios were covered by the wiring suite but were not run against live EKS clusters. No additional QA is required for the local k3d paths.

Related Pull Requests

None.

Issues

Closes #864

Relates to #858

Checklist

• I am familiar with the Contributing Guidelines.
• I have signed off my commits for Developer Certificate of Origin (DCO) compliance.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

Summary by CodeRabbit

• New Features

  • Added BDD assertions for validating Kubernetes resource YAML against expected subsets.
  • Supports resource names, namespaces, Kubernetes contexts, and environment-variable interpolation.
  • Preserves strict list matching while allowing additional map fields.

• Bug Fixes

  • Improved YAML mismatch reporting by identifying failing paths without exposing sensitive values.

• Tests

  • Expanded coverage for resource retrieval, YAML matching, interpolation, and observability and EKS scenarios.

[coderabbitai]

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📒 Files selected for processing (2)

• tests/bdd/PLAN.md
• tests/bdd/godog_test.go

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• tests/bdd/PLAN.md

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---

📝 Walkthrough

Walkthrough

The BDD DSL retrieves named Kubernetes resources as YAML and matches expected YAML subsets. Observability and EKS feature assertions now use structured resource checks. Mismatch errors omit expected and actual scalar values.

Changes

Kubernetes YAML assertion flow

Layer / File(s)	Summary
Resource YAML retrieval and validation tests/bdd/dsl/kubectl.go, tests/bdd/dsl/kubectl_test.go	Resource inputs are interpolated, trimmed, validated, and used to build quoted kubectl get -o yaml commands.
YAML document subset matching tests/bdd/dsl/yamledit.go, tests/bdd/dsl/yamledit_test.go	MatchYAMLDocument compares actual YAML against interpolated expected subsets and reports mismatch paths without exposing values.
BDD assertion step tests/bdd/steps/assertion_steps.go, tests/bdd/steps/steps_test.go, tests/bdd/PLAN.md	The new step retrieves a resource, checks command success, validates the YAML subset, and documents the subset behavior.
Feature migration and test wiring tests/bdd/features/*.feature, tests/bdd/godog_test.go	Observability, HTTPRoute, and ConfigMap checks use structured YAML assertions. Wiring tests no longer require exact collector YAML command invocations.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Merge Risk: ⚪ Minimal · up to 42e37

This change updates BDD assertions and related scenarios without changing product runtime behavior; no actionable merge-blocking risk remains beyond normal checks and review.

Sequence Diagram(s)

sequenceDiagram
  participant BDDScenario
  participant KubernetesResourceYAMLGetCommand
  participant kubectl
  participant MatchYAMLDocument
  BDDScenario->>KubernetesResourceYAMLGetCommand: Resolve resource, namespace, and context
  KubernetesResourceYAMLGetCommand->>kubectl: Retrieve resource as YAML
  kubectl-->>BDDScenario: Return YAML and exit code
  BDDScenario->>MatchYAMLDocument: Match expected YAML subset
  MatchYAMLDocument-->>BDDScenario: Return success or path-only error

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Suggested reviewers: pdmack

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 41.38% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 29 functions across 7 files. (1 skipped: 1 unsupported.)	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title uses the valid test(bdd) Conventional Commit format and accurately describes the BDD YAML subset assertion changes.
Linked Issues check	✅ Passed	The changes satisfy issue #864 by adding the documented step, explicit targets, YAML matching, focused tests, safe errors, and suitable assertion migrations.
Out of Scope Changes check	✅ Passed	The changes remain within the BDD DSL, BDD scenarios, documentation, wiring, and related tests required by issue #864.

✨ Finishing Touches 💡 1

📝 Generate docstrings 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch test/bdd-kubernetes-yaml-subset

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[coderabbitai]

Actionable comments posted: 2

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Inline comments:
In `@tests/bdd/godog_test.go`:
- Line 549: Remove collectorYAMLCommand from the exact-command assertion lists
in tests/bdd/godog_test.go at lines 549-549, 658-658, and 782-782. Keep the
wiring tests’ status == 0 checks and destructive-command substring assertions
unchanged; do not add exact recorder comparisons.

In `@tests/bdd/PLAN.md`:
- Line 138: Update the description of the Kubernetes resource step to state that
the resource YAML contains the supplied YAML subset, correcting the subset
direction while preserving the existing behavior details.

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Fix all unresolved CodeRabbit comments on this PR:

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📥 Commits

Reviewing files that changed from the base of the PR and between 5d9ab70 and b5a197b.

📒 Files selected for processing (13)

• tests/bdd/PLAN.md
• tests/bdd/dsl/kubectl.go
• tests/bdd/dsl/kubectl_test.go
• tests/bdd/dsl/yamledit.go
• tests/bdd/dsl/yamledit_test.go
• tests/bdd/features/multi-cluster-eks-helmfile.feature
• tests/bdd/features/observability-all.feature
• tests/bdd/features/observability-compute.feature
• tests/bdd/features/observability-control.feature
• tests/bdd/features/single-cluster-eks-helmfile.feature
• tests/bdd/godog_test.go
• tests/bdd/steps/assertion_steps.go
• tests/bdd/steps/steps_test.go

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