src/third_party/mozjs-45/js/src/jit-test/tests/heap-analysis/byteSize-of-scripts.js

// Check JS::ubi::Node::size results for scripts. We don't attempt to check
// exact sizes in this test (deemed to difficult and non-deterministic), just
// some sanity checks.

function f1() {
  return 42;
}

print("byteSizeOfScript(f1) = " + byteSizeOfScript(f1));
assertEq(byteSizeOfScript(f1) > 1, true);

function f2(n) {
  var obj = {
    x: 1,
    y: 2,
    z: 3,
  };

  if (i % 2 == 0) {
    for (var i = 0; i < n; i++) {
      this.x += i;
      print(uneval(i));
      obj[i] = i * i;
      if (i > 10) {
        f2(i / f1());
      }
    }
  }

  if (i % 3 == 0) {
    for (var i = 0; i < n; i++) {
      this.x *= i;
      print(uneval(i));
      obj[i] = i * i;
      if (i > 10) {
        f2(i / f1());
      }
    }
  }

  return this.x;
}

print("byteSizeOfScript(f2) = " + byteSizeOfScript(f2));
assertEq(byteSizeOfScript(f2) > 1, true);
assertEq(byteSizeOfScript(f2) > byteSizeOfScript(f1), true);