测试Jasmine测试是否失败

Question

我正在尝试为Jasmine编写一个插件,允许您从规范中返回一个承诺,并根据是否履行承诺而拒绝该规范.

当然,我想编写测试以确保我的插件正常工作,并且要彻底,我需要确保在拒绝承诺时测试失败...所以当我需要时如何进行测试通过确保测试"成功失败"？

Answer 1

在与使用Jasmine的开发人员交谈后,我们想出了这个:

var FAILED = 'failed'
var PASSED = 'passed'

describe('My Test Suite', function () {
    var env

    beforeEach(function () {
        // Create a secondary Jasmine environment to run your sub-specs in
        env = new jasmine.Env()
    })

    it('should work synchronously', function () {
        var spec

        // use the methods on `env` rather than the global ones for sub-specs
        // (describe, it, expect, beforeEach, etc)
        env.describe('faux suite', function () {
            spec = env.it('faux test', function (done) {
                env.expect(true).toBe(true)
            })
        })

        // this will fire off the specs in the secondary environment
        env.execute()

        // put your expectations here if the sub-spec is synchronous
        // `spec.result` has the status information we need
        expect(spec.result.status).toBe(FAILED)
    })

    // don't forget the `done` argument for asynchronous specs 
    it('should work asynchronously', function (done) {
        var spec

        // use the methods on `env` rather than the global ones.
        env.describe('faux suite', function () {
            // `it` returns a spec object that we can use later
            spec = env.it('faux test', function (done) {
                Promise.reject("FAIL").then(done)
            })
        })

        // this allows us to run code after we know the spec has finished
        env.addReporter({jasmineDone: function() {
            // put your expectations in here if the sub-spec is asynchronous
            // `spec.result` has the status information we need
            expect(spec.result.status).toBe(FAILED)
            // this is how Jasmine knows you've completed something asynchronous
            // you need to add it as an argument to the main `it` call above
            done()
        }})

        // this will fire off the specs in the secondary environment
        env.execute()
    })
})