Function expectsError

test/common/index.js:731–745

(validator, exact)

// Useful for testing expected internal/error objects
function expectsError(validator, exact) {
  return mustCall((...args) => {
    if (args.length !== 1) {
      // Do not use `assert.strictEqual()` to prevent `inspect` from
      // always being called.
      assert.fail(`Expected one argument, got ${inspect(args)}`);
    }
    const error = args.pop();
    // The error message should be non-enumerable
    assert.strictEqual(Object.prototype.propertyIsEnumerable.call(error, 'message'), false);

    assert.throws(() => { throw error; }, validator);
    return true;
  }, exact);
}

function skipIfInspectorDisabled() {
  if (!hasInspector) {