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Javascript – How to assert a string "toBe" one of multiple values in webdriverIO

I would like to have a flexible assertion which checks if a string is one of several values.

I have just started running my WebdriverIO + Mocha tests on BrowserStack, but they have US locale machines which render dates differently, so my tests are failing. There doesn’t seem to be a locale setting in BrowserStack config.

e.g.

  expectDOB_AU = '29/02/2024'
  expectDOB_US = '2/29/2024'

    await expect(await MyPage.inputDOB.getValue()).toBe([expectDOB_AU, expectDOB_US])

I can see that hasText can take an array, but this doesn’t work for a string fetched from an input value.

I have looked at this related question Multiple values in a single assertion in webdriverio

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2

Answers


  1. Chosen as BEST ANSWER
    0

    I have implemented this as a custom matcher - but still would like to know if it's possible in standard webdriverio.

    test/cusom/customMatcher.js

    expect.extend({
    toBeOneOf(actual, expecteds) {
        return {pass: expecteds.includes(actual), message: () => `${actual} should be one of ${expecteds}`}
    }
})

    optional: test/custom/CustomMatchers.d.ts

    // keep the IDE or Typescript happier 
declare namespace ExpectWebdriverIO {
    interface Matchers<R, T> {
        toBeOneOf(actual:string, expecteds: string[]): R
    }
}

    wdio.conf.js

        before: function (capabilities, specs) {
        require('./test/custom/cutomMatchers')
    },

    in the test spec

      await expect(await myPage.inputDOB.getValue()).toBeOneOf([sDOB_AU,sDOB_US])

  2. 0

    I realised I can use "native" Jest expects in webdriverio, and by inverting the assertion I can use a standard array matcher without need for custom matcher.

      await expect([sDOB, sDOB_US]).toContain(await myPage.inputDOB.getValue())

    It feels unusual to me to have the expect value on the other side, but it works.

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