suman-interactive/lib/generate-command/Run tests/Run tests with test coverage (Istanbul).js

Suman interactive project to guide users through advanced use cases

'use strict';

//core
const assert = require('assert');
const util = require('util');
const cp = require('child_process');

//npm
const inquirer = require('suman-inquirer');
const colors = require('colors/safe');

//project
const _suman = global.__suman = (global.__suman || {});
const chooseDirs = require('../../helpers/choose-dirs');
const sumanUtils = require('suman-utils');
const rejectionHandler = require('../../interactive-rejection-handler');
const choices = require('../../helpers/choices');
const nodeOrSuman = require('../../helpers/node-or-suman');
const getOptions = require('../../helpers/available-options');
const filteredOptions = require('../../helpers/return-filtered-opts');
const localOrGlobal = require('../../helpers/local-or-global-suman');
const startGenerateCommand = require('../../helpers/start-generate-command');
const iu = require('../../helpers/interactive-utils');
const promiseReducer = require('../../helpers/promise-reducer');

/////////////////////////////////////////////////////////////

const opts = [
  'verbose',
  'sparse',
  'match-any',
  'match-none',
  'match-all'
];

const availOptsForCoverage = filteredOptions(opts);

////////////////////////////////////////////////////////////

const fnsComplete = [];
const fns = [
  startGenerateCommand,
  chooseDirs,
  getOptions,
  localOrGlobal
];

/////////////////////////////////////////////////////////////

function run (opts, cb) {

  promiseReducer(run, opts, cb, fns, fnsComplete).then(function (obj) {

    const sumanExec = iu.mapSumanExec('suman', obj.localOrGlobal);
    let installIstanbul = '';

    let istanbulGlobalMessage = '';
    const istanbulGlobalInstallPath = String(cp.execSync('which istanbul')).replace('\n', '');

    if (istanbulGlobalInstallPath.length) {
      istanbulGlobalMessage = ' => Istanbul is installed globally ("' + istanbulGlobalInstallPath + '"), however,\n'
    }

    try {
      require.resolve('istanbul');
    }
    catch (err) {
      console.log('\n\n', colors.red(istanbulGlobalMessage + '  => You should install "istanbul" locally to get coverage.\n' +
        '   The below command shows you how to take care of that; you just need to run --use-istanbul once.'));
      installIstanbul = sumanExec + ' --use-istanbul &&';
    }

    const pathsToRun = obj.pathsToRun;
    const selectedOpts = obj[ 'command-line-options' ];
    const _cb = iu.createCallback(run, obj, cb);
    iu.allDoneHere([ '$', installIstanbul, sumanExec, '--coverage', pathsToRun, selectedOpts ], false, _cb);

  }).catch(rejectionHandler);

}

module.exports = function makePromise (opts, cb) {

  opts.exec = 'suman';
  opts.onlyOneFile = false;
  opts.optionsToUse = availOptsForCoverage;

  opts.msg = colors.yellow(' => To run coverage with Suman you can run coverage on multiple tests\n' +
      '  as you would expect and you can do so by running them with the runner or in separate processes' +
      ' without the runner.')
    + colors.blue('\n  First we will give you the chance to select one or more files or directories to' +
      'run the runner against.\n' +
      '  If you select only one file, then you must use the --runner option to tell Suman to use the runner, ' +
      'instead of just a single process.') + '\n\n\n' +
    ' Not to worry, this utility will make sure you do it right.' + '\n\n' +
    colors.green(' Please confirm.') + ' (To skip this message, use the --fast option).';

  return run(opts, cb);

};