message: test(runtime-core) Write more documentation.
diff: @@ -55,7 +55,14 @@ macro_rules! call_and_assert {
  };
  }
  +/// The shift that is set in the instance memory. The value is part of
  +/// the result returned by the imported functions if the memory is
  +/// read properly.
  const SHIFT: i32 = 10;
  +
  +/// The shift that is captured in the environment of a closure. The
  +/// value is part of the result returned by the imported function if
  +/// the closure captures its environment properly.
  const shift: i32 = 100;
  fn imported_functions_forms(test: &dyn Fn(&Instance)) {
  