执行testRunner.ts时出现Playwright Test不期望调用test()的错误

我在tests文件夹存放.spec.ts测试文件，testRunner.ts位于上级目录。用tsc构建项目，配置将生成的js文件存入dist文件夹。执行构建后的testRunner.js时，出现错误：

Error: Playwright Test did not expect test() to be called here

已排查以下情况：

• 未在配置文件中调用test()
• 未安装多个playwright/test版本
• 未在配置文件导入的文件中调用test()

作为TypeScript和Playwright新手，不确定还能进行哪些排查。以下是相关文件代码：

testRunner.ts #

import { Command } from "commander";
const fs = require('fs'); // no default export in node.js

const executeTests = new Command();
executeTests 
    .requiredOption('-c, --client <clientName>', 'Specify the client name. Eg. -c nbc OR --client nbc')
    .parse(process.argv) // returns an array containing the command line args (client name)

const options = executeTests.opts();
const clientName = options.client.toLowerCase();
const clientTestDataFile = '../clientTestData/testdata_'+clientName+'.json';

if (!fs.existsSync(clientTestDataFile)) {
    console.error('Error: Test data file not found in the test data folder for the client '+clientName+'.');
    process.exit(1);
} else {
    runTests();
   // runTests();
}
const clientTestData = JSON.parse(fs.readFileSync(clientTestDataFile, 'utf-8'));

async function runTests() {
    console.log('test1');
    const { runTest1 } = await import('./tests/tes.spec');
    console.log('test2');
    await runTest1();
   // runTest1();
    //runTest2();
}

tsconfig.json #

{
    "compilerOptions": {
      "target": "ES5",
      "module": "CommonJS",
      "sourceMap": true,
      "outDir": "dist"
    }
}

tes.spec.ts #

import { expect, test} from "@playwright/test"
//import casualportal_home from "../page/casualportal_home";
//import { create } from "domain";
//import casualportal_cart from "../page/casualportal_cart";
//const testdata= JSON.parse(JSON.stringify(require("../testdata.json")))

export function runTest1() {
    test('Validate if the "Book" button works', async ({ page , baseURL }) => {
        console.log('test() called')
    });
};

核心问题是Playwright Test的test()函数不能通过自定义脚本直接调用，它必须由官方测试运行器npx playwright test执行。你的自定义runner逻辑违背了Playwright的运行机制，修正方案如下：

1. 标准化测试文件
   去掉runTest1导出函数，直接写标准Playwright测试用例：

// tests/tes.spec.ts
import { expect, test} from "@playwright/test"

test('Validate if the "Book" button works', async ({ page , baseURL }) => {
    console.log('test() called')
});

2. 用环境变量实现客户端数据加载
   通过环境变量传递客户端名称，在测试文件中读取对应数据：

// tests/tes.spec.ts
import { expect, test} from "@playwright/test"
import fs from 'fs';

const clientName = process.env.CLIENT?.toLowerCase() || 'default';
const clientTestData = JSON.parse(fs.readFileSync(`../clientTestData/testdata_${clientName}.json`, 'utf-8'));

test('Validate if the "Book" button works', async ({ page , baseURL }) => {
    console.log('Using client data:', clientName);
    // 这里使用clientTestData编写测试逻辑
});

3. 重写testRunner调用Playwright命令
   自定义runner仅做参数校验，然后调用Playwright官方测试命令：

// testRunner.ts
import { Command } from "commander";
import { spawn } from 'child_process';
import fs from 'fs';

const executeTests = new Command();
executeTests 
    .requiredOption('-c, --client <clientName>', 'Specify the client name. Eg. -c nbc OR --client nbc')
    .parse(process.argv);

const options = executeTests.opts();
const clientName = options.client.toLowerCase();
const clientTestDataFile = `../clientTestData/testdata_${clientName}.json`;

if (!fs.existsSync(clientTestDataFile)) {
    console.error(`Error: Test data file not found for client ${clientName}.`);
    process.exit(1);
}

// 传递环境变量，调用Playwright测试
const pwProcess = spawn('npx', ['playwright', 'test'], {
    env: { ...process.env, CLIENT: clientName },
    stdio: 'inherit' // 同步输出到终端
});

pwProcess.on('exit', code => process.exit(code || 0));

4. 构建与运行
   执行tsc构建项目后，运行dist/testRunner.js -c nbc即可，脚本会自动调用Playwright执行对应客户端的测试。

内容的提问来源于stack exchange，提问作者Akshitha Dalpethado