// SPDX-License-Identifier: GPL-3.0-or-later

package main

import "testing"

// TestRelWidthAndPadCellCountRunes: C4. relWidth and padCell must measure
// column width in runes, not bytes, or a name carrying diacritics
// misaligns its column - "próba.txt" is 9 runes but 10 bytes (ó is a
// two-byte UTF-8 sequence), one column narrower than its byte length
// would suggest.
func TestRelWidthAndPadCellCountRunes(t *testing.T) {
	rels := []string{"a.txt", "próba.txt"}
	if w := relWidth(rels); w != 9 {
		t.Fatalf("relWidth(%q) = %d, want 9 (rune count of próba.txt, not its %d bytes)", rels, w, len("próba.txt"))
	}
	if got, want := padCell("a.txt", 9), "a.txt    "; got != want {
		t.Fatalf("padCell(%q, 9) = %q, want %q", "a.txt", got, want)
	}
	if got, want := padCell("próba.txt", 9), "próba.txt"; got != want {
		t.Fatalf("padCell(%q, 9) = %q, want %q (already at width: no padding)", "próba.txt", got, want)
	}
}