Function errorMatches

test/unit/static/js/assertions.js:124–135

(actual, expected)

  // Utility for checking whether an error matches a given constructor, regexp or string
  function errorMatches (actual, expected) {
    if (typeof expected === 'string') {
      return actual.message === expected;
    }
    if (expected instanceof RegExp) {
      return expected.test(actual.message);
    }
    if (actual instanceof expected) {
      return true;
    }
    return false;
  }

  function AssertionError (opts) {
    opts = opts || {};