variablesMap.Append("dict", func(_ *MapValue) ref.Val {
		evalCounter++
		v, err := compileAndRun(env, activation, `{"a": "a"}`)
		if err != nil {
			return types.NewErr(err.Error())
		}
		return v
	})

	// iterate the map with .all
	exp = `variables.all(n, n != "")`
	v, err = compileAndRun(env, activation, exp)
	if err != nil {
		t.Fatalf("%q: %v", exp, err)
	}
	if v.Value().(bool) != true {