// Copyright (c) 2026 Storm Dragon
// Authors: Storm Dragon, Angus Kola
// SPDX-License-Identifier: GPL-3.0-or-later

package atspi

import "testing"

func TestDocumentRoutingSelectionCollapseEcho(t *testing.T) {
	for _, test := range []struct {
		offset, start, end int
		want               uint8
	}{
		{0, 0, 0, 8}, // Selection removal temporarily collapses at zero.
		{1, 0, 0, 4}, // Requested route completes at one.
		{2, 0, 0, 0}, // An unrelated native movement is not an echo.
		{0, 0, 1, 0}, // A fresh native selection must never be swallowed.
		{1, 0, 1, 0},
	} {
		event := NewEvent(CaretEvent, Snapshot{TextCaretKnown: true, SelectionStart: test.start, SelectionEnd: test.end})
		event.Detail1 = test.offset
		if got := documentNavigationEchoBit(event, 1, map[int]bool{0: true, 1: true}); got != test.want {
			t.Fatalf("offset %d, selection %d:%d: bit %d, want %d", test.offset, test.start, test.end, got, test.want)
		}
	}
}