meteor/packages/tinytest/tinytest_server.js

Meteor.startup(function () {
  Meteor._ServerTestResults.remove();
  // Index is definitely not unique and doesn't need to be sparse.
  Meteor._ServerTestResults._ensureIndex('run_id');
});

Meteor.publish('tinytest/results', function (run_id) {
  return Meteor._ServerTestResults.find({run_id: run_id},
                                        {key: {collection: 'tinytest_results',
                                               run_id: run_id}});
});

Meteor.methods({
  'tinytest/run': function (run_id) {
    this.unblock();

    // XXX using private API === lame
    var Future = __meteor_bootstrap__.require('fibers/future');
    var future = new Future;

    var onReport = function (report) {
      if (! Fiber.current) {
        Meteor._debug("Trying to report a test not in a fiber! "+
                      "You probably forgot to wrap a callback in bindEnvironment.");
        console.trace();
      }
      Meteor._ServerTestResults.insert({run_id: run_id, report: report});
      Meteor.refresh({collection: 'tinytest_results', run_id: run_id});
    };

    var onComplete = function() {
      future.ret();
    };

    Meteor._runTests(onReport, onComplete);

    future.wait();
  }
});