[🐛 Bug]: browser runner does not support mocha's global fixtures and root hooks #10220
Description
Have you read the Contributing Guidelines on issues?
- I have read the Contributing Guidelines on issues.
WebdriverIO Version
latest
Node.js Version
16.18.1
Mode
WDIO Testrunner
Which capabilities are you using?
{
maxInstances: 5,
browserName: 'chrome',
acceptInsecureCerts: true,
}What happened?
Standalone mocha provides global fixtures as well as root hooks. Both can be loaded via mocha config's require option.
wdio's runners also theoretically supports the require config option as mochaOpts.require.
However, while mochaOpts.require works in case of the local runner, the browser runner fails with the following error:
[0-5] Error: Test failed due to following error(s):
- mocha.js: Uncaught TypeError: self[opt] is not a function
at http://localhost:57323/node_modules/mocha/browser-entry.js:161:18
at Array.forEach (<anonymous>)
at Mocha.mocha.setup (http://localhost:57323/node_modules/mocha/browser-entry.js:159:6)
at new MochaFramework (http://localhost:57323/node_modules/@wdio/browser-runner/build/browser/frameworks/mocha.js?v=b6ac1b03:37:15)
at http://localhost:57323/node_modules/@wdio/browser-runner/build/browser/frameworks/mocha.js?v=b6ac1b03:236:16
self[opt] here implies an unsupported config key. Similar error can be raised by using a mistyped key like timeot instead of timeout.
Steps
- Implement mocha's global fixtures in
tests/fixtures.js
export async function mochaGlobalSetup() {
console.log(`server running on port`);
}
- Configure mocha to use
tests/fixtures.jsthroughmochaOpts.requirein wdio's browser runner configwdio.browser.conf.js:
mochaOpts: {
ui: 'bdd',
timeout: 60000,
require: ['tests/fixtures.js']
},
- Run the browser runner.
$ DEBUG=true npx wdio run ./wdio.browsr.conf.js
- The run fails (see log below) with an error described above.
What is your expected behavior?
The browser runner should read and execute the global fixtures / root hooks provided by mochaOpts.require.
Helper files
Full wdio.browser.config.js:
export const config = {
injectGlobals: false,
runner: ['browser', {
preset: 'react',
headless: !process.env.DEBUG,
}],
specs: [
'./tests/L1/**/*.test.js',
],
exclude: [
],
maxInstances: 10,
capabilities: [{
maxInstances: 5,
browserName: 'chrome',
acceptInsecureCerts: true,
}],
logLevel: 'warn',
bail: 0,
baseUrl: '',
waitforTimeout: 10000,
connectionRetryTimeout: 120000,
connectionRetryCount: 3,
services: [
'chromedriver',
'geckodriver',
],
framework: 'mocha',
reporters: ['dot'],
mochaOpts: {
ui: 'bdd',
timeout: 60000,
require: ['tests/fixtures.js']
},
};
Code of Conduct
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Is there an existing issue for this?
- I have searched the existing issues