// Copyright (c) 2026 Petr Balvín <opensource@petrbalvin.org> (https://petrbalvin.org)
// SPDX-License-Identifier: BSD-3-Clause

package token

import "testing"

func TestKindString(t *testing.T) {
	cases := map[Kind]string{
		EOF:     "EOF",
		Ident:   "IDENT",
		Number:  "NUMBER",
		LParen:  "(",
		LShift:  "<<",
		Arrow:   "->",
		Pipe:    "|",
		Illegal: "ILLEGAL",
	}
	for k, want := range cases {
		if got := k.String(); got != want {
			t.Errorf("Kind(%d).String() = %q, want %q", int(k), got, want)
		}
	}
	// An out-of-range kind falls back to the numeric form.
	if got := Kind(9999).String(); got != "Kind(9999)" {
		t.Errorf("Kind(9999).String() = %q", got)
	}
}

func TestPosition(t *testing.T) {
	p := Position{Offset: 10, Line: 3, Column: 7}
	if got := p.String(); got != "3:7" {
		t.Errorf("Position.String() = %q, want 3:7", got)
	}
	if !p.IsValid() {
		t.Error("position with a line should be valid")
	}
	var zero Position
	if zero.IsValid() {
		t.Error("zero position should be invalid")
	}
}

func TestTokenString(t *testing.T) {
	tok := Token{Kind: Ident, Text: "MOVQ", Pos: Position{Line: 1, Column: 2}}
	got := tok.String()
	if got == "" || got[0] == ' ' {
		t.Errorf("Token.String() = %q", got)
	}
}