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Testing Strategy

Guardrails​

  • Test files live in __tests__/ directories
  • Coverage thresholds enforced: 80% for statements, branches, functions, lines
  • No snapshot tests
  • Full suite runs on PRs (unit + integration)

Jest config example​

import type { Config } from 'jest';
const config: Config = {
  preset: 'ts-jest',
  testEnvironment: 'node',
  roots: ['<rootDir>/apps', '<rootDir>/packages'],
  collectCoverage: true,
  coverageDirectory: 'coverage',
  coverageThreshold: { global: { branches: 80, functions: 80, lines: 80, statements: 80 } },
};
export default config;

LLM Notes​

  • Prefer unit tests for logic. Use integration tests when hitting real services/emulators.
  • Include tests and adjust thresholds only via ADR if you must relax them.