Mirrored Test Placement

Kind: constraint

Layer: Structural Core

Record: architecture:mirrored-test-placement

Severity: mandatory

Scope: folder, file

Canonical: Ontology

A rule or precondition that a test sits in the concern folder of the file it tests, under a test root mirroring that file's governed root, and moves whenever that file moves.

Listed in Architecture principles, after Collision Consolidation and before Sanctioned Generic Subject.

Requires

• Compound Marker
• Concern Folder

Reinforces

• Discoverability

Enables

• Identity Migration

Conflicts with

• Stranded Test

Violated by

• Stranded Test
• Shared-Subject Test

Refactored by

• Move the Test with Its Subject
• Split One Test per Subject

Severity

• mandatory

Category

• Taxonomy / Classification / Naming

Enforced by

• rules/eslint/closure-tests-centralized.eslint.rule.ts

Linked from

• Quality Attributes
• Taxonomy / Classification / Naming
• Severity levels

in this codebase

• rules/eslint/closure-tests-centralized.eslint.rule.ts