Test Pyramid Inversion
Kind: anti-pattern
Layer: Enforcement Core
Record: architecture:test-pyramid-inversion
Severity: discouraged
Scope: contract_compatibility
Formed by: Rely mainly on slow, brittle end-to-end tests while unit, contract, component, and property tests are sparse.
Canonical: Ontology
A defect in which a test suite relies mainly on slow end-to-end tests, with few unit and contract tests.
Listed in Architecture principles, after Feature-Only Design and before Mock Mirage.