message: Add more lambda capture tests
  Summary: These are pretty subtle, and want to make sure I have them written down.
diff: @@ -331,6 +331,26 @@ f(1)(2)(3) == 6",
  );
  }
  +#[test]
  +fn test_lambda_capture() {
  + assert::is_true(
  + "
  +f = lambda y: x + y
  +x = 100
  +f(42) == 142
  +",
  + );
  + assert::is_true(
  + "
  +def inside():
  + f = lambda y: x + y
  + x = 100
  + return f(42) == 142
  +inside()
  +",
  + );
  +}
  +
  #[test]
  fn test_garbage_collect() {
  assert::pass(
  