mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-09-20 13:22:19 +02:00
434 lines
9.3 KiB
Go
434 lines
9.3 KiB
Go
// Copyright 2018 The Ebiten Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package packing_test
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import (
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"testing"
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"github.com/hajimehoshi/ebiten/v2/internal/packing"
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)
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func TestPage(t *testing.T) {
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type Rect struct {
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X int
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Y int
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Width int
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Height int
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}
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type Op struct {
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Width int
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Height int
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FreeNodeID int
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}
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cases := []struct {
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Name string
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In []Op
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Out []*Rect
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}{
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{
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Name: "alloc and random free",
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In: []Op{
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{100, 100, -1},
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{100, 100, -1},
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{100, 100, -1},
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{100, 100, -1},
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{100, 100, -1},
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{100, 100, -1},
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{0, 0, 1},
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{0, 0, 3},
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{0, 0, 5},
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{0, 0, 0},
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{0, 0, 2},
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{0, 0, 4},
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{1024, 1024, -1},
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},
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Out: []*Rect{
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{0, 0, 100, 100},
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{0, 100, 100, 100},
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{0, 200, 100, 100},
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{0, 300, 100, 100},
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{0, 400, 100, 100},
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{0, 500, 100, 100},
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nil,
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nil,
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nil,
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nil,
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nil,
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nil,
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{0, 0, 1024, 1024},
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},
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},
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{
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Name: "alloc and free and empty",
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In: []Op{
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{31, 41, -1},
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{59, 26, -1},
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{53, 58, -1},
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{97, 93, -1},
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{28, 84, -1},
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{62, 64, -1},
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{0, 0, 0},
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{0, 0, 1},
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{0, 0, 2},
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{0, 0, 3},
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{0, 0, 4},
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{0, 0, 5},
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},
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Out: []*Rect{
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{0, 0, 31, 41},
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{31, 0, 59, 26},
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{31, 26, 53, 58},
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{31, 84, 97, 93},
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{0, 41, 28, 84},
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{31, 177, 62, 64},
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nil,
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nil,
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nil,
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nil,
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nil,
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nil,
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},
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},
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{
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Name: "random Alloc",
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In: []Op{
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{100, 200, -1},
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{1024, 1024, -1},
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{100, 200, -1},
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{50, 50, -1},
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{200, 200, -1},
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{1024, 1024, -1},
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{500, 500, -1},
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{600, 600, -1},
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{100, 100, -1},
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{0, 0, 2},
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{100, 200, -1},
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},
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Out: []*Rect{
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{0, 0, 100, 200},
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nil,
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{0, 200, 100, 200},
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{0, 400, 50, 50},
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{100, 0, 200, 200},
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nil,
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{100, 200, 500, 500},
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nil,
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{0, 450, 100, 100},
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nil,
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{0, 200, 100, 200},
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},
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},
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{
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Name: "fill squares",
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In: []Op{
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{256, 256, -1},
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{256, 256, -1},
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{256, 256, -1},
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{256, 256, -1},
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{256, 256, -1},
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{256, 256, -1},
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{256, 256, -1},
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{256, 256, -1},
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{256, 256, -1},
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{256, 256, -1},
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{256, 256, -1},
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{256, 256, -1},
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{256, 256, -1},
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{256, 256, -1},
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{256, 256, -1},
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{256, 256, -1},
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{256, 256, -1},
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},
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Out: []*Rect{
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{0, 0, 256, 256},
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{0, 256, 256, 256},
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{0, 512, 256, 256},
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{0, 768, 256, 256},
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{256, 0, 256, 256},
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{512, 0, 256, 256},
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{768, 0, 256, 256},
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{256, 256, 256, 256},
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{256, 512, 256, 256},
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{256, 768, 256, 256},
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{512, 256, 256, 256},
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{768, 256, 256, 256},
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{512, 512, 256, 256},
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{512, 768, 256, 256},
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{768, 512, 256, 256},
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{768, 768, 256, 256},
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nil,
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},
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},
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{
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Name: "fill not fitting squares",
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In: []Op{
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{300, 300, -1},
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{300, 300, -1},
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{300, 300, -1},
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{300, 300, -1},
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{300, 300, -1},
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{300, 300, -1},
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{300, 300, -1},
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{300, 300, -1},
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{300, 300, -1},
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{300, 300, -1},
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},
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Out: []*Rect{
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{0, 0, 300, 300},
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{0, 300, 300, 300},
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{0, 600, 300, 300},
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{300, 0, 300, 300},
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{600, 0, 300, 300},
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{300, 300, 300, 300},
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{300, 600, 300, 300},
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{600, 300, 300, 300},
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{600, 600, 300, 300},
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nil,
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},
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},
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}
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for _, c := range cases {
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p := packing.NewPage(1024, 1024, 1024)
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nodes := []*packing.Node{}
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nnodes := 0
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for i, in := range c.In {
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if in.FreeNodeID == -1 {
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n := p.Alloc(in.Width, in.Height)
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nodes = append(nodes, n)
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nnodes++
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} else {
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p.Free(nodes[in.FreeNodeID])
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nodes = append(nodes, nil)
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nnodes--
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}
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if nnodes < 0 {
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panic("not reached")
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}
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if p.IsEmpty() != (nnodes == 0) {
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t.Errorf("%s: nodes[%d]: page.IsEmpty(): got: %v, want: %v", c.Name, i, p.IsEmpty(), (nnodes == 0))
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}
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}
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for i, out := range c.Out {
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if nodes[i] == nil {
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if out != nil {
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t.Errorf("%s: nodes[%d]: should be nil but %v", c.Name, i, out)
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}
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continue
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}
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x, y, width, height := nodes[i].Region()
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got := Rect{x, y, width, height}
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if out == nil {
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t.Errorf("%s: nodes[%d]: got: %v, want: %v", c.Name, i, got, nil)
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continue
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}
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want := *out
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if got != want {
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t.Errorf("%s: nodes[%d]: got: %v, want: %v", c.Name, i, got, want)
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}
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}
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}
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}
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func TestAlloc(t *testing.T) {
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p := packing.NewPage(1024, 1024, 2048)
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w, h := p.Size()
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p.Alloc(w/2, h/2)
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n0 := p.Alloc(w*3/2, h*2)
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if n0 == nil {
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t.Errorf("p.Alloc failed: width: %d, height: %d", w*3/2, h*2)
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}
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n1 := p.Alloc(w/2, h*3/2)
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if n1 == nil {
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t.Errorf("p.Alloc failed: width: %d, height: %d", w/2, h*3/2)
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}
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if p.Alloc(1, 1) != nil {
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t.Errorf("p.Alloc(1, 1) must fail but not")
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}
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p.Free(n1)
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if p.Alloc(1, 1) == nil {
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t.Errorf("p.Alloc(1, 1) failed")
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}
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p.Free(n0)
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}
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func TestAlloc2(t *testing.T) {
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p := packing.NewPage(1024, 1024, 2048)
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w, h := p.Size()
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p.Alloc(w/2, h/2)
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n1 := p.Alloc(w/2, h/2)
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n2 := p.Alloc(w/2, h/2)
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p.Alloc(w/2, h/2)
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p.Free(n1)
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p.Free(n2)
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n3 := p.Alloc(w, h*2)
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if n3 == nil {
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t.Errorf("p.Alloc failed: width: %d, height: %d", w, h*2)
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}
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n4 := p.Alloc(w, h)
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if n4 == nil {
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t.Errorf("p.Alloc failed: width: %d, height: %d", w, h)
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}
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p.Free(n4)
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p.Free(n3)
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}
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func TestAllocJustSize(t *testing.T) {
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p := packing.NewPage(1024, 1024, 4096)
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if p.Alloc(4096, 4096) == nil {
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t.Errorf("got: nil, want: non-nil")
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}
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}
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// Issue #1454
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func TestAllocTooMuch(t *testing.T) {
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p := packing.NewPage(1024, 1024, 4096)
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p.Alloc(1, 1)
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if p.Alloc(4096, 4096) != nil {
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t.Errorf("got: non-nil, want: nil")
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}
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}
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func TestNonSquareAlloc(t *testing.T) {
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p := packing.NewPage(1024, 1024, 16384)
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n0 := p.Alloc(16384, 1)
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if _, h := p.Size(); h != 1024 {
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t.Errorf("got: %d, want: 1024", h)
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}
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n1 := p.Alloc(16384, 1)
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if _, h := p.Size(); h != 1024 {
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t.Errorf("got: %d, want: 1024", h)
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}
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p.Free(n0)
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p.Free(n1)
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}
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func TestExtend(t *testing.T) {
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p := packing.NewPage(1024, 1024, 2048)
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n0 := p.Alloc(1024, 1024)
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if n0 == nil {
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t.Errorf("p.Alloc(1024, 1024) failed")
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}
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// In the current implementation, the page is extended in a horizontal direction first.
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n1 := p.Alloc(1024, 1024)
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if n1 == nil {
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t.Errorf("p.Alloc(1024, 1024) failed")
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}
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gotWidth, gotHeight := p.Size()
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if wantWidth, wantHeight := 2048, 1024; gotWidth != wantWidth || gotHeight != wantHeight {
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t.Errorf("got: (%d, %d), want: (%d, %d)", gotWidth, gotHeight, wantWidth, wantHeight)
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}
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// Then, allocating (1024, 2048) fails unfortunately.
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if p.Alloc(1024, 2048) != nil {
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t.Errorf("p.Alloc(1024, 2048) must fail but not")
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}
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n2 := p.Alloc(2048, 1024)
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if n2 == nil {
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t.Errorf("p.Alloc(1024, 2048) failed")
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}
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gotWidth, gotHeight = p.Size()
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if wantWidth, wantHeight := 2048, 2048; gotWidth != wantWidth || gotHeight != wantHeight {
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t.Errorf("got: (%d, %d), want: (%d, %d)", gotWidth, gotHeight, wantWidth, wantHeight)
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}
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p.Free(n0)
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p.Free(n1)
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p.Free(n2)
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}
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func TestExtend2(t *testing.T) {
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p := packing.NewPage(1024, 1024, 2048)
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n0 := p.Alloc(1024, 1024)
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if n0 == nil {
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t.Errorf("p.Alloc(1024, 1024) failed")
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}
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// Extend the page in the both directions. (1024, 2048) should be allocated on the right side.
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n1 := p.Alloc(1024, 2048)
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if n1 == nil {
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t.Errorf("p.Alloc(1024, 2048) failed")
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}
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gotWidth, gotHeight := p.Size()
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if wantWidth, wantHeight := 2048, 2048; gotWidth != wantWidth || gotHeight != wantHeight {
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t.Errorf("got: (%d, %d), want: (%d, %d)", gotWidth, gotHeight, wantWidth, wantHeight)
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}
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// There should be a space in the lower-left corner.
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n2 := p.Alloc(1024, 1024)
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if n2 == nil {
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t.Errorf("p.Alloc(1024, 1024) failed")
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}
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gotWidth, gotHeight = p.Size()
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if wantWidth, wantHeight := 2048, 2048; gotWidth != wantWidth || gotHeight != wantHeight {
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t.Errorf("got: (%d, %d), want: (%d, %d)", gotWidth, gotHeight, wantWidth, wantHeight)
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}
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p.Free(n0)
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p.Free(n1)
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p.Free(n2)
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}
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func TestExtend3(t *testing.T) {
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p := packing.NewPage(1024, 1024, 2048)
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// Allocate a small area that doesn't touch the left edge and the bottom edge.
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// Allocating (1, 1) would split the entire region into left and right in the current implementation,
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// so allocate (2, 1) here.
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n0 := p.Alloc(2, 1)
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if n0 == nil {
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t.Errorf("p.Alloc(1, 1) failed")
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}
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// Extend the page in the vertical direction.
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n1 := p.Alloc(1024, 2047)
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if n1 == nil {
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t.Errorf("p.Alloc(1024, 2047) failed")
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}
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gotWidth, gotHeight := p.Size()
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if wantWidth, wantHeight := 1024, 2048; gotWidth != wantWidth || gotHeight != wantHeight {
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t.Errorf("got: (%d, %d), want: (%d, %d)", gotWidth, gotHeight, wantWidth, wantHeight)
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}
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// There should be a space on the right side.
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n2 := p.Alloc(1024, 2048)
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if n2 == nil {
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t.Errorf("p.Alloc(1024, 2048) failed")
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}
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gotWidth, gotHeight = p.Size()
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if wantWidth, wantHeight := 2048, 2048; gotWidth != wantWidth || gotHeight != wantHeight {
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t.Errorf("got: (%d, %d), want: (%d, %d)", gotWidth, gotHeight, wantWidth, wantHeight)
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}
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p.Free(n0)
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p.Free(n1)
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p.Free(n2)
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}
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