minassert.js

/*! by @iamjinme, inspired by https://github.com/WebReflection/tressa */

// full module, compatible with node 0.8+ & browser
// Add this code in your index.html before your tests
// like <script src="minassert.js"></script>
// Make your test: assert( 1, 2, "compare two numbers" );
// Look the results in the browser console

// for sync tests
function assert(actual, expected, message) {
  try {
    if (actual !== expected) {
      throw "Assertion failed: " + message;
    } else if (typeof message === 'string' && typeof actual !== 'undefined') {
      console.log('\x1b[32m%s\x1b[0m', '✔ ', message);
    }
  } catch(error) {
    assert.exitCode = 1;
    console.error('✖ ' + error, {
      actual,
      expected,
    });
  }
}

// for async tests
assert.async = function (fn, timeout) {
  var timer = setTimeout(
    function () { assert(false, 'timeout ' + fn); },
    timeout || assert.timeout
  );
  fn(function () { clearTimeout(timer); });
};

// default timeout
assert.timeout = 10000;

// for node env only
try {
  process.on('exit', function () {
    process.exit(assert.exitCode || 0);
  });
  module.exports = assert;
} catch(browser) {}