jest-progress-bar-reporter/lib/jest-progress-bar-reporter.js

Progress bar reporter for Jest

const moment = require('moment');
const chalk = require('chalk');
const ProgressBar = require('progress');

const passedFmt = chalk.green;
const failedFmt = chalk.red;
const pendingFmt = chalk.cyan;
const infoFmt = chalk.white;

class JestProgressBarReporter {
  constructor(globalConfig, options) {
    this._globalConfig = globalConfig;
    this._options = options;
    this._numTotalTestSuites;
  }

  onRunStart(test) {
    const { numTotalTestSuites } = test;

    console.log();
    console.log(infoFmt(`Found ${numTotalTestSuites} test suites`));
    this._numTotalTestSuites = numTotalTestSuites;
  }

  onTestStart() {
    if (!this._bar) {
      this._bar = new ProgressBar('[:bar] :current/:total :percent', {
        complete: '.',
        incomplete: ' ',
        total: this._numTotalTestSuites,
      });
    }
  }

  onRunComplete(test, results) {
    const {
      numFailedTests,
      numPassedTests,
      numPendingTests,
      testResults,
      numTotalTests,
      startTime,
      snapshot,
    } = results;

    testResults.map(({ failureMessage }) => {
      if (failureMessage) {
        console.log(failureMessage);
      }
    });
    console.log(infoFmt(`Ran ${numTotalTests} tests in ${testDuration()}`));
    if (snapshot.failure) {
      console.log(
        `\n${failedFmt(
          `Obsolete snapshot(s)`
        )} found, run with 'npm test -- -u' to remove them\n`
      );
    }
    if (numPassedTests) {
      console.log(
        this._getStatus('passed') + passedFmt(` ${numPassedTests} passing`)
      );
    }
    if (numFailedTests) {
      console.log(
        this._getStatus('failed') + failedFmt(` ${numFailedTests} failing`)
      );
    }
    if (numPendingTests) {
      console.log(
        this._getStatus('pending') + pendingFmt(` ${numPendingTests} pending`)
      );
    }

    function testDuration() {
      const delta = moment.duration(moment() - new Date(startTime));
      const seconds = delta.seconds();
      const millis = delta.milliseconds();
      return `${seconds}.${millis} s`;
    }
  }

  onTestResult() {
    this._bar.tick();
  }

  _getStatus(status) {
    switch (status) {
      case 'passed':
        return passedFmt('✔');
      default:
      case 'failed':
        return failedFmt('✘');
      case 'pending':
        return pendingFmt('-');
    }
  }
}

module.exports = JestProgressBarReporter;