ebiten/internal/restorable/rect_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 restorable_test
import (
"image"
"testing"
"github.com/hajimehoshi/ebiten/v2/internal/restorable"
)
func areEqualRectangles(a, b []image.Rectangle) bool {
if len(a) != len(b) {
return false
}
for i := range a {
if a[i] != b[i] {
return false
}
}
return true
}
func TestRemoveDuplicatedRegions(t *testing.T) {
cases := []struct {
In []image.Rectangle
Out []image.Rectangle
}{
{
In: nil,
Out: nil,
},
{
In: []image.Rectangle{
image.Rect(0, 0, 2, 2),
},
Out: []image.Rectangle{
image.Rect(0, 0, 2, 2),
},
},
{
In: []image.Rectangle{
image.Rect(0, 0, 2, 2),
image.Rect(0, 0, 1, 1),
},
Out: []image.Rectangle{
image.Rect(0, 0, 2, 2),
},
},
{
In: []image.Rectangle{
image.Rect(0, 0, 1, 1),
image.Rect(0, 0, 2, 2),
},
Out: []image.Rectangle{
image.Rect(0, 0, 2, 2),
},
},
{
In: []image.Rectangle{
image.Rect(0, 0, 1, 3),
image.Rect(0, 0, 2, 2),
image.Rect(0, 0, 3, 1),
},
Out: []image.Rectangle{
image.Rect(0, 0, 1, 3),
image.Rect(0, 0, 2, 2),
image.Rect(0, 0, 3, 1),
},
},
{
In: []image.Rectangle{
image.Rect(0, 0, 1, 3),
image.Rect(0, 0, 2, 2),
image.Rect(0, 0, 3, 1),
image.Rect(0, 0, 4, 4),
},
Out: []image.Rectangle{
image.Rect(0, 0, 4, 4),
},
},
{
In: []image.Rectangle{
image.Rect(0, 0, 1, 3),
image.Rect(0, 0, 2, 2),
image.Rect(0, 0, 3, 1),
image.Rect(0, 0, 4, 4),
image.Rect(1, 1, 2, 2),
},
Out: []image.Rectangle{
image.Rect(0, 0, 4, 4),
},
},
{
In: []image.Rectangle{
image.Rect(0, 0, 1, 3),
image.Rect(0, 0, 2, 2),
image.Rect(0, 0, 3, 1),
image.Rect(0, 0, 4, 4),
image.Rect(0, 0, 5, 5),
},
Out: []image.Rectangle{
image.Rect(0, 0, 5, 5),
},
},
}
for _, c := range cases {
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n := restorable.RemoveDuplicatedRegions(c.In)
got := c.In[:n]
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want := c.Out
if !areEqualRectangles(got, want) {
t.Errorf("restorable.RemoveDuplicatedRegions(%#v): got: %#v, want: %#v", c.In, got, want)
}
}
}