Skip to main content

Unit Test

Using Mocha

  • 安裝相關套件
npm install --global mocha
npm install @types/mocha --save-dev

npm install chai --save-dev
npm install @types/chai --save-dev

npm install assert --save-dev
npm install @types/assert--save-dev

要測試的 code

  • 路徑：index.ts
export function sum(x: number, y: number): number {
  return x + y;
}

測試寫法

  • 路徑：test/test.ts
import { sum } from "../index";
import assert from "assert";
import * as chai from "chai";

describe("index.ts", () => {
  it("sum by assert", () => {
    assert.strictEqual(3, sum(1, 2));
  });

  it("sum by chai", () => {
    chai.expect(sum(2, 5)).to.equal(7);
  });
});
  • package.json
// scripts 加入
"test": "mocha --require ts-node/register test/*.ts"

最後以 npm test 執行

Reference​

使用 TypeScript 撰寫 mocha測試