How does it handle complex TypeORM queries in tests?

It provides standardized patterns to mock SelectQueryBuilder chains using mockReturnThis(), allowing you to verify query construction and pagination logic without needing a live database connection.

Why does it use big.js for testing?

In financial and e-commerce contexts, floating-point math can lead to precision errors. This skill enforces big.js for money-related assertions to ensure absolute precision in your business logic tests.

What testing frameworks does this skill support?

The skill is specifically designed for NestJS testing utilities, using Jest for unit/integration mocking and supertest for E2E HTTP testing.

Can I use it for existing NestJS projects?

Yes, it is designed to analyze existing modules under src/modules/ to understand service dependencies and generate compatible tests for services, controllers, and repositories.

NestJS Testing Suite

Name: NestJS Testing Suite
Author: sellernote

bysellernote

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セキュリティとテスト

Generates standardized NestJS unit, integration, and E2E tests following professional 3-layer architecture conventions.

The NestJS Testing Suite is a specialized Claude Code skill designed to automate the creation of robust backend tests within a 3-layer architecture (Controller, Service, Repository). It enforces strict coding standards such as type-safe mocking with jest.Mocked, precision money handling via big.js, and standardized TypeORM repository testing patterns. By loading context-specific conventions, this skill ensures that every test—from isolated service logic to full HTTP request cycles—aligns with enterprise-grade quality, architectural integrity, and domain-driven design principles.

主な機能

01Supertest-based E2E test scaffolding with production-ready ValidationPipe configuration

02Precision-focused financial logic testing using big.js assertions

03Strict enforcement of architectural boundaries between layers

04Automated Service, Controller, and Repository unit test generation

05Type-safe mocking patterns for TypeORM DataSource and SelectQueryBuilder

061 GitHub stars

ユースケース

01Validating API request/response cycles and DTO validation rules via E2E tests

02Implementing unit tests for complex business logic within NestJS Services

03Testing TypeORM repository query construction and pagination logic without a live database

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add sellernote/sellernote-vibecode-plugin nestjs-testing

For use in Claude.ai and ChatGPT

主な機能

01Supertest-based E2E test scaffolding with production-ready ValidationPipe configuration

02Precision-focused financial logic testing using big.js assertions

03Strict enforcement of architectural boundaries between layers

04Automated Service, Controller, and Repository unit test generation

05Type-safe mocking patterns for TypeORM DataSource and SelectQueryBuilder

061 GitHub stars

ユースケース

01Validating API request/response cycles and DTO validation rules via E2E tests

02Implementing unit tests for complex business logic within NestJS Services

03Testing TypeORM repository query construction and pagination logic without a live database

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add sellernote/sellernote-vibecode-plugin nestjs-testing

For use in Claude.ai and ChatGPT