wdio.conf.js

const credentials = require('./.credentials.json');
const apiKey = credentials["apiKey"];
const appId = credentials["appId"];

exports.config = {
    framework: 'mocha',
    mochaOpts: {
        ui: 'bdd',
        timeout: 60000
    },

    // logLevel: 'silent',
    deprecationWarnings: true,

    bail: 0,
    waitforTimeout: 10000,
    connectionRetryTimeout: 500000,
    connectionRetryCount: 0,

    reporters: [
      'spec'
    ],

    protocol: 'https',
    hostname: 'appium.bitbar.com',
    port: 443,
    path:  '/wd/hub',

    specs: [
      './test/specs/**/*.js'
    ],

    capabilities: [{
      "platformName": "Android",
      "appium:automationName": "uiautomator2",
      "bitbar:options": {
        apiKey: apiKey,
        device: "Google Pixel 3a Android 12",
        app:  appId,
        project: "WebdriverIO_Example_Android",
        testrun: "TestRun_Android"
      }
    }],

    //
    // =====
    // Hooks
    // =====
    // WebdriverIO provides several hooks you can use to interfere with the test process in order to enhance
    // it and to build services around it. You can either apply a single function or an array of
    // methods to it. If one of them returns with a promise, WebdriverIO will wait until that promise got
    // resolved to continue.

    /**
     * Gets executed once before all workers get launched.
     * @param {Object} config wdio configuration object
     * @param {Array.<Object>} capabilities list of capabilities details
     */
    onPrepare: function (config, capabilities) {
      // clean screenshots dir
      const rimraf = require('rimraf');
      rimraf.sync('./screenshots/*', {
        glob: {
          ignore: './screenshots/.gitkeep'
        }
      });
    },

    /**
     * Gets executed just before initialising the webdriver session and test framework. It allows you
     * to manipulate configurations depending on the capability or spec.
     * @param {Object} config wdio configuration object
     * @param {Array.<Object>} capabilities list of capabilities details
     * @param {Array.<String>} specs List of spec file paths that are to be run
     */
    // beforeSession: function (config, capabilities, specs) {
    // },

    /**
     * Gets executed before test execution begins. At this point you can access to all global
     * variables like `browser`. It is the perfect place to define custom commands.
     * @param {Array.<Object>} capabilities list of capabilities details
     * @param {Array.<String>} specs List of spec file paths that are to be run
     */
    // before: function (capabilities, specs) {
    // },
    before: async function() {
        const chai = await import('chai');
        global.expect = chai.expect;
        chai.should();

        global.takeScreenshot = async (fileName) => {
            await driver.saveScreenshot(`./screenshots/${fileName}.png`);
        };
    }

    /**
     * Runs before a WebdriverIO command gets executed.
     * @param {String} commandName hook command name
     * @param {Array} args arguments that command would receive
     */
    // beforeCommand: function (commandName, args) {
    // },

    /**
     * Hook that gets executed before the suite starts
     * @param {Object} suite suite details
     */
    // beforeSuite: function (suite) {
    // },

    /**
     * Function to be executed before a test (in Mocha/Jasmine) starts.
     */
    // beforeTest: function (test, context) {
    // },

    /**
     * Hook that gets executed _before_ a hook within the suite starts (e.g. runs before calling
     * beforeEach in Mocha)
     */
    // beforeHook: function (test, context) {
    // },

    /**
     * Hook that gets executed _after_ a hook within the suite starts (e.g. runs after calling
     * afterEach in Mocha)
     */
    // afterHook: function (test, context, { error, result, duration, passed, retries }) {
    // },

    /**
     * Function to be executed after a test (in Mocha/Jasmine).
     */
    // afterTest: function(test, context, { error, result, duration, passed, retries }) {
    // },


    /**
     * Hook that gets executed after the suite has ended
     * @param {Object} suite suite details
     */
    // afterSuite: function (suite) {
    // },

    /**
     * Runs after a WebdriverIO command gets executed
     * @param {String} commandName hook command name
     * @param {Array} args arguments that command would receive
     * @param {Number} result 0 - command success, 1 - command error
     * @param {Object} error error object if any
     */
    // afterCommand: function (commandName, args, result, error) {
    // },

    /**
     * Gets executed after all tests are done. You still have access to all global variables from
     * the test.
     * @param {Number} result 0 - test pass, 1 - test fail
     * @param {Array.<Object>} capabilities list of capabilities details
     * @param {Array.<String>} specs List of spec file paths that ran
     */
    // after: function (result, capabilities, specs) {
    // },

    /**
     * Gets executed right after terminating the webdriver session.
     * @param {Object} config wdio configuration object
     * @param {Array.<Object>} capabilities list of capabilities details
     * @param {Array.<String>} specs List of spec file paths that ran
     */
    // afterSession: function (config, capabilities, specs) {
    // },

    /**
     * Gets executed after all workers got shut down and the process is about to exit. An error
     * thrown in the onComplete hook will result in the test run failing.
     * @param {Object} exitCode 0 - success, 1 - fail
     * @param {Object} config wdio configuration object
     * @param {Array.<Object>} capabilities list of capabilities details
     * @param {<Object>} results object containing test results
     */
    // onComplete: function(exitCode, config, capabilities, results) {
    // },

    /**
    * Gets executed when a refresh happens.
    * @param {String} oldSessionId session ID of the old session
    * @param {String} newSessionId session ID of the new session
    */
    //onReload: function(oldSessionId, newSessionId) {
    //}
}