ebiten/text/v2/multi_test.go

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// 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 (
"bytes"
"testing"
"github.com/hajimehoshi/bitmapfont/v3"
"golang.org/x/image/font/gofont/goregular"
"github.com/hajimehoshi/ebiten/v2"
"github.com/hajimehoshi/ebiten/v2/text/v2"
)
func TestMultiFace(t *testing.T) {
faces := []text.Face{text.NewGoXFace(bitmapfont.Face)}
f, err := text.NewMultiFace(faces...)
if err != nil {
t.Fatal(err)
}
img := ebiten.NewImage(30, 30)
text.Draw(img, "Hello", f, nil)
// Confirm that the given slice doesn't cause crash.
faces[0] = nil
text.Draw(img, "World", f, nil)
}
func TestMultiFaceFallback(t *testing.T) {
enFaceSource, err := text.NewGoTextFaceSource(bytes.NewReader(goregular.TTF))
if err != nil {
t.Fatal(err)
}
enFace := &text.GoTextFace{
Source: enFaceSource,
Size: 10,
}
multiFace, err := text.NewMultiFace(enFace)
if err != nil {
t.Fatal(err)
}
// If all the faces in a MultiFace doesn't have a glyph, the last face should be used.
str := "あ"
got := text.AppendGlyphs(nil, str, multiFace, nil)
want := text.AppendGlyphs(nil, str, enFace, nil)
if len(got) != len(want) {
t.Errorf("got: %d, want: %d", len(got), len(want))
}
}