jest.config.js

const { join, relative } = require('path');

module.exports = {
  collectCoverageFrom: ['<rootDir>/packages/*/src/**/*.{js,jsx,ts,tsx}'],
  coverageReporters: ['json', 'lcov', 'text-summary', 'clover', 'cobertura'],
  // We only have 4 instances of Chromium running simultaneously.
  maxWorkers: 4,
  projects: ['<rootDir>/jest.html2.config.js', '<rootDir>/jest.legacy.config.js'],
  reporters: [
    'default',
    [
      'jest-junit',
      {
        ancestorSeparator: ' › ',
        classNameTemplate: '{filepath}',
        includeConsoleOutput: true,
        outputDirectory: 'coverage',
        suiteName: 'BotFramework-WebChat',
        titleTemplate: ({ classname, filename, title }) =>
          [filename, classname, title]
            .map(value => (value || '').trim())
            .filter(value => value)
            .join(' › ')
      }
    ],
    [
      'jest-trx-results-processor',
      {
        outputFile: 'coverage/result.trx',
        postProcessTestResult: [
          (testSuiteResult, testResult, testResultNode) => {
            // If you want to re-touch the test result, you can refer to source code from these links:
            // - https://github.com/facebook/jest/blob/master/packages/jest-types/src/TestResult.ts
            // - https://docs.microsoft.com/en-us/azure/devops/pipelines/tasks/test/publish-test-results?view=azure-devops&tabs=yaml#attachments-support
            // - https://github.com/Microsoft/vstest/tree/master/src/Microsoft.TestPlatform.Extensions.TrxLogger
            // - https://github.com/no23reason/jest-trx-results-processor/tree/master/src

            testResult.failureMessages.forEach(message => {
              const pattern = /See (diff|screenshot) for details: (.*)/gmu;

              for (;;) {
                const match = pattern.exec(message);

                if (!match) {
                  break;
                }

                testResultNode.ele('ResultFiles').ele('ResultFile').att('path', match[2]);
              }
            });

            testResultNode.att(
              'testName',
              `${relative(__dirname, testSuiteResult.testFilePath)} › ${testResult.fullName}`
            );
          }
        ]
      }
    ],
    [
      './__tests__/setup/NUnitTestReporter',
      {
        filename: join(__dirname, 'coverage/nunit3.xml'),
        jestResultFilename: join(__dirname, 'coverage/jest.json')
      }
    ],
    ['github-actions', { silent: false }]
  ]
};