ebiten/internal/affine/colorm_test.go

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2019-01-22 18:50:30 +01:00
// Copyright 2019 The Ebiten 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 affine_test
import (
"math"
"testing"
. "github.com/hajimehoshi/ebiten/internal/affine"
)
func TestColorMScaleOnly(t *testing.T) {
cases := []struct {
In *ColorM
Out bool
}{
{
nil,
true,
},
{
(*ColorM)(nil).Translate(0, 0, 0, 0),
true,
},
{
(*ColorM)(nil).Translate(1, 0, 0, 0),
false,
},
{
(*ColorM)(nil).Translate(0, 0, 0, -1),
false,
},
{
(*ColorM)(nil).Scale(1, 1, 1, 1),
true,
},
{
(*ColorM)(nil).Scale(0, 0, 0, 0),
true,
},
{
(*ColorM)(nil).Scale(0.1, 0.2, 0.3, 0.4),
true,
},
{
(*ColorM)(nil).Scale(0.1, 0.2, 0.3, 0.4).Translate(1, 0, 0, 0),
false,
},
{
(*ColorM)(nil).ChangeHSV(math.Pi/2, 0.5, 0.5),
false,
},
{
(*ColorM)(nil).SetElement(0, 0, 2),
true,
},
{
(*ColorM)(nil).SetElement(0, 1, 2),
false,
},
}
for _, c := range cases {
got := c.In.ScaleOnly()
want := c.Out
if got != want {
t.Errorf("%v.ScaleOnly(): got: %t, want: %t", c.In, got, want)
}
}
}