progress.js 1.9 KB

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  1. 'use strict';
  2. /**
  3. * Module dependencies.
  4. */
  5. var Base = require('./base');
  6. var inherits = require('../utils').inherits;
  7. var color = Base.color;
  8. var cursor = Base.cursor;
  9. /**
  10. * Expose `Progress`.
  11. */
  12. exports = module.exports = Progress;
  13. /**
  14. * General progress bar color.
  15. */
  16. Base.colors.progress = 90;
  17. /**
  18. * Initialize a new `Progress` bar test reporter.
  19. *
  20. * @api public
  21. * @param {Runner} runner
  22. * @param {Object} options
  23. */
  24. function Progress (runner, options) {
  25. Base.call(this, runner);
  26. var self = this;
  27. var width = Base.window.width * 0.50 | 0;
  28. var total = runner.total;
  29. var complete = 0;
  30. var lastN = -1;
  31. // default chars
  32. options = options || {};
  33. options.open = options.open || '[';
  34. options.complete = options.complete || '▬';
  35. options.incomplete = options.incomplete || Base.symbols.dot;
  36. options.close = options.close || ']';
  37. options.verbose = false;
  38. // tests started
  39. runner.on('start', function () {
  40. console.log();
  41. cursor.hide();
  42. });
  43. // tests complete
  44. runner.on('test end', function () {
  45. complete++;
  46. var percent = complete / total;
  47. var n = width * percent | 0;
  48. var i = width - n;
  49. if (n === lastN && !options.verbose) {
  50. // Don't re-render the line if it hasn't changed
  51. return;
  52. }
  53. lastN = n;
  54. cursor.CR();
  55. process.stdout.write('\u001b[J');
  56. process.stdout.write(color('progress', ' ' + options.open));
  57. process.stdout.write(Array(n).join(options.complete));
  58. process.stdout.write(Array(i).join(options.incomplete));
  59. process.stdout.write(color('progress', options.close));
  60. if (options.verbose) {
  61. process.stdout.write(color('progress', ' ' + complete + ' of ' + total));
  62. }
  63. });
  64. // tests are complete, output some stats
  65. // and the failures if any
  66. runner.on('end', function () {
  67. cursor.show();
  68. console.log();
  69. self.epilogue();
  70. });
  71. }
  72. /**
  73. * Inherit from `Base.prototype`.
  74. */
  75. inherits(Progress, Base);