Prose is lean and code-dense, but the 'Common Test Patterns' section carries 14 full inline examples (parallel modules, state key sharing, cleanup ordering, aliased providers, etc.) that duplicate territory already covered by references/EXAMPLES.md and could be tightened or offloaded.

Provides fully executable HCL blocks plus concrete commands ('terraform test -filter=test_vpc_configuration', '-no-cleanup') that are copy-paste ready, matching the executable anchor.

Sections are sequenced (structure → run block → patterns → running → troubleshooting) but there is no explicit validate→fix→retry feedback loop, and apply-mode tests create real resources — a destructive/batch context where the rubric caps clarity at 2 without checkpoints.

The top 'Reference Files' section signals three one-level-deep references well, but content that belongs in EXAMPLES.md (the 14 inline pattern blocks) is kept inline rather than appropriately split, fitting the 'content that should be separate is inline' anchor.

Lists multiple concrete actions: 'creating test files (.tftest.hcl), writing test scenarios with run blocks, validating infrastructure behavior with assertions, mocking providers and data sources, testing module outputs and resource configurations, or troubleshooting Terraform test syntax and execution.'

Explicitly answers what ('writing and running Terraform tests') and when via an explicit 'Use when ...' clause enumerating triggers, satisfying the both-what-and-when anchor.

Covers natural terms users would say — 'writing and running Terraform tests', 'test files (.tftest.hcl)', 'run blocks', 'assertions', 'mocking providers', 'troubleshooting' — matching the good-coverage anchor.

The niche is sharply scoped to Terraform's testing framework with distinct triggers (.tftest.hcl, run blocks, assertions), making conflict with other skills unlikely.