javascript - Mocha 中的异步函数

Question

在尝试为测试用例断言错误消息时收到问题

AssertionError: expected [Function] to throw an error
at Context.it (test\index.js:24:80)

if (configVms.rts) {
describe('Real Time Services', () => {
    for(let rtsConfig of configVms["rts"].rtsConfig) {
        it(`Real Time Services endpoints for guid ${rtsConfig.resourceId} on ${rtsConfig.platformType} platform`, async () => {
            expect(async () => await realTimeServices.main(rtsConfig)).to.throw('Host rejected');
        });
    }});
}

Answer 1

to.throw 仅适用于同步函数。 对于您的情况，我建议添加 chai-as-promised 插件并更改测试:

if (configVms.rts) {
describe('Real Time Services', () => {
    for(let rtsConfig of configVms["rts"].rtsConfig) {
        it(`Real Time Services endpoints for guid ${rtsConfig.resourceId} on ${rtsConfig.platformType} platform`, async () => {
            await expect(realTimeServices.main(rtsConfig)).to.be.rejectedWith('Host rejected');
        });
    }});
}