@stryker-mutator/mocha-runner/dist/src/stryker-mocha-reporter.js

A plugin to use the mocha test runner in Stryker, the JavaScript mutation testing framework

import { TestStatus } from '@stryker-mutator/api/test-runner';
import { Timer } from './timer.js';
export class StrykerMochaReporter {
    runner;
    /*
     * The stryker logger instance injected into this plugin
     * Needs to be set from 'the outside' because mocha doesn't really have a nice way of providing
     * data to reporters...
     */
    static log;
    timer = new Timer();
    passedCount = 0;
    tests = [];
    static currentInstance;
    constructor(runner) {
        this.runner = runner;
        this.registerEvents();
        StrykerMochaReporter.currentInstance = this;
    }
    registerEvents() {
        this.runner.on('start', () => {
            this.passedCount = 0;
            this.timer.reset();
            this.tests = [];
            StrykerMochaReporter.log?.debug('Starting Mocha test run');
        });
        this.runner.on('pass', (test) => {
            const title = test.fullTitle();
            const result = {
                id: title,
                name: title,
                status: TestStatus.Success,
                timeSpentMs: this.timer.elapsedMs(),
                fileName: test.file,
            };
            this.tests.push(result);
            this.passedCount++;
            this.timer.reset();
        });
        this.runner.on('fail', (test, err) => {
            const title = test.ctx?.currentTest?.fullTitle() ?? test.fullTitle();
            const result = {
                id: title,
                failureMessage: (err.message || err.stack) ?? '<empty failure message>',
                name: title,
                status: TestStatus.Failed,
                timeSpentMs: this.timer.elapsedMs(),
            };
            this.tests.push(result);
            if (StrykerMochaReporter.log?.isTraceEnabled()) {
                StrykerMochaReporter.log?.trace(`Test failed: ${test.fullTitle()}. Error: ${err.message}`);
            }
        });
        this.runner.on('end', () => {
            StrykerMochaReporter.log?.debug('Mocha test run completed: %s/%s passed', this.passedCount, this.tests.length);
        });
    }
}
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