@nestjs-yalc/jest

Jest helpers for YALC and NestJS test suites.

Use this package for common mocks, ESM-aware GraphQL mocking, environment test helpers, query builder mocks, and shared assertions.

Installation

npm install --save-dev @nestjs-yalc/jest

Main Exports

• envTestHelper for temporary environment variable overrides.
• createNestJsGraphqlMock and mockNestJSGraphql for Nest GraphQL tests.
• mockedExecutionContext, mockChainingObject, and mockQueryBuilder.
• Common class/factory definition tests and ESM import helpers through subpaths.

Example

import { envTestHelper } from '@nestjs-yalc/jest';

const env = envTestHelper({ NODE_ENV: 'test' });

try {
  // test code
} finally {
  env.reset();
}

Related Package

Use @nestjs-yalc/jest-config when you need the generated Jest configuration helpers used by the monorepo.