function findAndRunE2eTests()

in gulpfile.js [214:261]

• 39 lines of code
• 7 McCabe index (conditional complexity)

function findAndRunE2eTests(filter, outputFile) {
  // create an output file with header.
  var startTime = new Date().getTime();
  var header = `Doc Sample Protractor Results for ${lang} on ${new Date().toLocaleString()}\n`;
  header += argv.fast ?
    '  Fast Mode (--fast): no npm install, webdriver update, or boilerplate copy\n' :
    '  Slow Mode: npm install, webdriver update, and boilerplate copy\n';
  header += `  Filter: ${filter ? filter : 'All tests'}\n\n`;
  fs.writeFileSync(outputFile, header);

  // create an array of combos where each
  // combo consists of { examplePath: ... }
  var examplePaths = [];
  var e2eSpecPaths = getE2eSpecPaths(EXAMPLES_PATH);
   e2eSpecPaths.forEach(function(specPath) {
    // get all of the examples under each dir where a pcFilename is found
    localExamplePaths = getExamplePaths(specPath, true);
    // Filter by example name
    if (filter) {
      localExamplePaths = localExamplePaths.filter(function (fn) {
        return fn.match(filter) != null;
      })
    }
    // Filter by language, also supports variations like js-es6
    localExamplePaths = localExamplePaths.filter(function (fn) {
      return fn.match('/'+lang+'(?:-[^/]*)?$') != null;
    });
    localExamplePaths.forEach(function(examplePath) {
      examplePaths.push(examplePath);
    })
  });

  // run the tests sequentially
  var status = { passed: [], failed: [] };
  return examplePaths.reduce(function (promise, examplePath) {
    return promise.then(function () {
      var runTests = isDartPath(examplePath) ? runE2eDartTests : runE2eTsTests;
      return runTests(examplePath, outputFile).then(function(ok) {
        var arr = ok ? status.passed : status.failed;
        arr.push(examplePath);
      })
    });
  }, Q.resolve()).then(function() {
    var stopTime = new Date().getTime();
    status.elapsedTime = (stopTime - startTime)/1000;
    return status;
  });
}