return
		}
	}

	// compare values
	gotStr := ""
	if gotTv.Value != nil {
		gotStr = gotTv.Value.ExactString()
	}
	if gotStr != valStr {
		t.Errorf("Eval(%q) got value %s, want %s", expr, gotStr, valStr)
	}
}

func TestEvalBasic(t *testing.T) {
	fset := token.NewFileSet()
	for _, typ := range Typ[Bool : String+1] {
		testEval(t, fset, nil, nopos, typ.Name(), typ, "", "")
	}