// Copyright 2023 The Ebitengine Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package text_test

import (
	"regexp"
	"strings"
	"testing"

	"github.com/hajimehoshi/bitmapfont/v3"

	"github.com/hajimehoshi/ebiten/v2/text/v2"
)

func TestGlyphIndex(t *testing.T) {
	const sampleText = `The quick brown fox jumps
over the lazy dog.`

	f := text.NewStdFace(bitmapfont.Face)
	got := sampleText
	for _, g := range text.AppendGlyphs(nil, sampleText, f, nil) {
		got = got[:g.StartIndexInBytes] + strings.Repeat(" ", g.EndIndexInBytes-g.StartIndexInBytes) + got[g.EndIndexInBytes:]
	}
	want := regexp.MustCompile(`\S`).ReplaceAllString(sampleText, " ")
	if got != want {
		t.Errorf("got: %q, want: %q", got, want)
	}
}