meteor/meteor/testing

# CLI self-tests
./meteor self-test                           # Run all CLI tests
./meteor self-test "test name"               # Run specific test
./meteor self-test --list                    # List available tests
./meteor self-test --exclude "^[a-b]"        # Exclude tests by regex
./meteor self-test --retries 0               # Skip retries in development
 
# Package tests (TinyTest — view results at http://localhost:3000)
./meteor test-packages                       # Test all core packages
./meteor test-packages mongo                 # Test specific package
TINYTEST_FILTER="collection" ./meteor test-packages  # Filter specific tests
 
# Package tests in console (headless via Puppeteer — prints results to terminal)
# Use this for automation or when you need terminal output without a browser.
PUPPETEER_DOWNLOAD_PATH=~/.npm/chromium ./packages/test-in-console/run.sh
./packages/test-in-console/run.sh            # Test all core packages
./packages/test-in-console/run.sh "mongo"    # Test specific package
 
# E2E tests (Jest + Playwright)
npm run install:e2e                          # Install dependencies
npm run test:e2e                             # Run all E2E tests
npm run test:e2e -- -t="React"               # Run specific test
 
# Native mobile smoke tests (Maestro)
npm run install:native                       # Install deps, verify Maestro CLI on PATH
npm run test:native:android                  # Run Android smoke flow
npm run test:native:ios                       # Run iOS smoke flow

import { testAsyncMulti, simplePoll, waitUntil } from 'meteor/test-helpers';
// Wait for condition
await waitUntil(() => someCondition, { timeout: 5000, interval: 100 });
// Poll until ready
simplePoll(() => isReady(), successCallback, failCallback);

import { clickElement, simulateEvent, canonicalizeHtml, renderToDiv } from 'meteor/test-helpers';
clickElement(button);
simulateEvent(input, 'keydown', { keyCode: 13 });
const normalized = canonicalizeHtml(html);

import { makeTestConnection, captureConnectionMessages } from 'meteor/test-helpers';
const conn = makeTestConnection(clientId);
const messages = captureConnectionMessages(server);

Tinytest.add('my test', function (test) {
  test.equal(1 + 1, 2);
  test.isTrue(true);
  test.throws(function () { throw new Error(); });
});
Tinytest.addAsync('async test', async function (test) {
  const result = await asyncOperation();
  test.equal(result, expected);
});

# Verbose build output
METEOR_DEBUG_BUILD=1 ./meteor run
 
# Profile build performance
METEOR_PROFILE=1 ./meteor build
 
# Force rebuild
./meteor reset && ./meteor run
 
# Debug Meteor tool with Chrome inspector
TOOL_NODE_FLAGS="--inspect-brk" ./meteor

Package.onTest(function(api) {
  api.use(['tinytest', 'test-helpers', 'my-package']);
  api.addFiles('my-package-tests.js');
});

import { MyPackage } from 'meteor/my-package';
Tinytest.add('MyPackage - basic functionality', function (test) {
  const result = MyPackage.doSomething();
  test.equal(result, expected);
});