# Implementation-Only Testing

> Testing only against the current implementation's behavior rather than the specified contract.

Record: `lexicon:implementation-only-testing`
Kind: anti-pattern
Layer: [Computation Core](https://banes-lab.com/records/layer/computation-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-implementation-only-testing

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Hidden Time/Randomness/Global State](https://banes-lab.com/records/lexicon/hidden-time-randomness-global-state.md) and before [Informal Validation Only](https://banes-lab.com/records/lexicon/informal-validation-only.md).

## Category

- [Correctness / Determinism / Verification](https://banes-lab.com/records/lexicon-category/correctness-determinism-verification.md)

## Negated by

- [Specification-Based Testing](https://banes-lab.com/records/architecture/specification-based-testing.md)

## Linked from

- [Correctness / Determinism / Verification](https://banes-lab.com/ontology/principles/architecture-category-correctness-determinism-verification.md)