ladybird/Libraries/LibJS/Tests/variable-undefined.js

load("test-common.js");

function foo(a) {
  return a;
}

try {
  var x = undefined;
  assert(x === undefined);
  assert(foo(x) === undefined);

  var o = {};
  o.x = x;
  assert(o.x === undefined);
  assert(o.x === x);
  console.log("PASS");
} catch (e) {
  console.log("FAIL: " + e);
}