AgentSkillsCN

testing-backend

后端测试标准（NestJS、Jest）。适用于为 API 编写单元测试或集成测试时使用。

SKILL.md
--- frontmatter
name: testing-backend
description: "Backend testing standards (NestJS, Jest). Use when writing unit or integration tests for API."
event: file-change
auto_trigger: false
version: "1.0.0"
last_updated: "2026-01-30"

# Inputs/Outputs
inputs:
  - source_code
output: test_code
output_format: "Jest test file"

# Auto-Trigger Rules
auto_invoke:
  events:
    - "file-change"
  file_patterns:
    - "apps/api/**/*.ts"

# Agent Association
called_by: ["@QA", "@Backend"]
mcp_tools:
  - runTests

Backend Testing Skill

Purpose: Ensure API reliability via Unit and Integration tests using Jest.

File Naming

  • •Unit: [name].spec.ts (alongside source).
  • •Integration: test/[feature].e2e-spec.ts.

Coverage Targets

  • •Services: 80%
  • •Controllers: 70%
  • •Critical Path: 95%

Mocking Prisma

Use jest-mock-extended.

typescript
import { mockDeep } from "jest-mock-extended";
import { PrismaClient } from "@prisma/client";

const prisma = mockDeep<PrismaClient>();
prisma.model.findMany.mockResolvedValue([]);

AAA Pattern

typescript
it("should create resource", async () => {
  // Arrange
  const dto = { name: "Test" };
  prisma.resource.create.mockResolvedValue(result);

  // Act
  const res = await service.create(dto);

  // Assert
  expect(res).toEqual(result);
});