internal/processtest/testdata: add a test file

Updates #2362

internal/processtest/testdata/issue2362.go

@@ -0,0 +1,62 @@
+// Copyright 2022 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.
+
+//go:build ignore
+// +build ignore
+
+package main
+
+import (
+	"fmt"
+	"image/color"
+
+	"github.com/hajimehoshi/ebiten/v2"
+)
+
+type Game struct {
+	drawCount int
+}
+
+func (g *Game) Update() error {
+	if g.drawCount == 2 {
+		return ebiten.Termination
+	}
+	return nil
+}
+
+func (g *Game) Draw(screen *ebiten.Image) {
+	switch g.drawCount {
+	case 0:
+		screen.Set(0, 0, color.White)
+		g.drawCount++
+	case 1:
+		if got, want := screen.At(0, 0).(color.RGBA), (color.RGBA{0xff, 0xff, 0xff, 0xff}); got != want {
+			panic(fmt.Sprintf("got: %v, want: %v", got, want))
+		}
+		g.drawCount++
+	}
+}
+
+func (g *Game) Layout(outsideWidth, outsideHeight int) (int, int) {
+	return 640, 480
+}
+
+func main() {
+	ebiten.SetWindowTitle("Test")
+	ebiten.SetScreenClearedEveryFrame(false)
+
+	if err := ebiten.RunGame(&Game{}); err != nil {
+		panic(err)
+	}
+}