go-opengl-pixel/color_test.go

386 lines
7.9 KiB
Go

package pixel_test
import (
"fmt"
"image/color"
"reflect"
"testing"
"github.com/faiface/pixel"
)
func BenchmarkColorToRGBA(b *testing.B) {
types := []color.Color{
color.NRGBA{R: 124, G: 14, B: 230, A: 42}, // slowest
color.RGBA{R: 62, G: 32, B: 14, A: 63}, // faster
pixel.RGB(0.8, 0.2, 0.5).Scaled(0.712), // fastest
}
for _, col := range types {
b.Run(fmt.Sprintf("From %T", col), func(b *testing.B) {
for i := 0; i < b.N; i++ {
_ = pixel.ToRGBA(col)
}
})
}
}
func TestRGB(t *testing.T) {
type args struct {
r float64
g float64
b float64
}
tests := []struct {
name string
args args
want pixel.RGBA
}{
{
name: "RBG: create black",
args: args{r: 0, g: 0, b: 0},
want: pixel.RGBA{R: 0, G: 0, B: 0, A: 1},
},
{
name: "RBG: create white",
args: args{r: 1, g: 1, b: 1},
want: pixel.RGBA{R: 1, G: 1, B: 1, A: 1},
},
{
name: "RBG: create nonsense",
args: args{r: 500, g: 500, b: 500},
want: pixel.RGBA{R: 500, G: 500, B: 500, A: 1},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := pixel.RGB(tt.args.r, tt.args.g, tt.args.b); !reflect.DeepEqual(got, tt.want) {
t.Errorf("RGB() = %v, want %v", got, tt.want)
}
})
}
}
func TestAlpha(t *testing.T) {
type args struct {
a float64
}
tests := []struct {
name string
args args
want pixel.RGBA
}{
{
name: "Alpha: transparent",
args: args{a: 0},
want: pixel.RGBA{R: 0, G: 0, B: 0, A: 0},
},
{
name: "Alpha: obaque",
args: args{a: 1},
want: pixel.RGBA{R: 1, G: 1, B: 1, A: 1},
},
{
name: "Alpha: nonsense",
args: args{a: 1024},
want: pixel.RGBA{R: 1024, G: 1024, B: 1024, A: 1024},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := pixel.Alpha(tt.args.a); !reflect.DeepEqual(got, tt.want) {
t.Errorf("Alpha() = %v, want %v", got, tt.want)
}
})
}
}
func TestRGBA_Add(t *testing.T) {
type fields struct {
R float64
G float64
B float64
A float64
}
type args struct {
d pixel.RGBA
}
tests := []struct {
name string
fields fields
args args
want pixel.RGBA
}{
{
name: "RGBA.Add: add to black",
fields: fields{R: 0, G: 0, B: 0, A: 1},
args: args{d: pixel.RGBA{R: 50, G: 50, B: 50, A: 0}},
want: pixel.RGBA{R: 50, G: 50, B: 50, A: 1},
},
{
name: "RGBA.Add: add to white",
fields: fields{R: 1, G: 1, B: 1, A: 1},
args: args{d: pixel.RGBA{R: 1, G: 1, B: 1, A: 1}},
want: pixel.RGBA{R: 2, G: 2, B: 2, A: 2},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
c := pixel.RGBA{
R: tt.fields.R,
G: tt.fields.G,
B: tt.fields.B,
A: tt.fields.A,
}
if got := c.Add(tt.args.d); !reflect.DeepEqual(got, tt.want) {
t.Errorf("RGBA.Add() = %v, want %v", got, tt.want)
}
})
}
}
func TestRGBA_Sub(t *testing.T) {
type fields struct {
R float64
G float64
B float64
A float64
}
type args struct {
d pixel.RGBA
}
tests := []struct {
name string
fields fields
args args
want pixel.RGBA
}{
{
name: "RGBA.Sub: sub from white",
fields: fields{R: 1, G: 1, B: 1, A: 1},
args: args{d: pixel.RGBA{R: .5, G: .5, B: .5, A: 0}},
want: pixel.RGBA{R: .5, G: .5, B: .5, A: 1},
},
{
name: "RGBA.Sub: sub from black",
fields: fields{R: 0, G: 0, B: 0, A: 0},
args: args{d: pixel.RGBA{R: 1, G: 1, B: 1, A: 1}},
want: pixel.RGBA{R: -1, G: -1, B: -1, A: -1},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
c := pixel.RGBA{
R: tt.fields.R,
G: tt.fields.G,
B: tt.fields.B,
A: tt.fields.A,
}
if got := c.Sub(tt.args.d); !reflect.DeepEqual(got, tt.want) {
t.Errorf("RGBA.Sub() = %v, want %v", got, tt.want)
}
})
}
}
func TestRGBA_Mul(t *testing.T) {
type fields struct {
R float64
G float64
B float64
A float64
}
type args struct {
d pixel.RGBA
}
greaterThanOne := args{d: pixel.RGBA{R: 2, G: 3, B: 4, A: 5}}
lessThanOne := args{d: pixel.RGBA{R: .2, G: .3, B: .4, A: .5}}
tests := []struct {
name string
fields fields
args args
want pixel.RGBA
}{
{
name: "RGBA.Mul: multiply black by >1",
fields: fields{R: 0, G: 0, B: 0, A: 0},
args: greaterThanOne,
want: pixel.RGBA{R: 0, G: 0, B: 0, A: 0},
},
{
name: "RGBA.Mul: multiply white by >1",
fields: fields{R: 1, G: 1, B: 1, A: 1},
args: greaterThanOne,
want: pixel.RGBA{R: 2, G: 3, B: 4, A: 5},
},
{
name: "RGBA.Mul: multiply black by <1",
fields: fields{R: 0, G: 0, B: 0, A: 0},
args: lessThanOne,
want: pixel.RGBA{R: 0, G: 0, B: 0, A: 0},
},
{
name: "RGBA.Mul: multiply white by <1",
fields: fields{R: 1, G: 1, B: 1, A: 1},
args: lessThanOne,
want: pixel.RGBA{R: .2, G: .3, B: .4, A: .5},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
c := pixel.RGBA{
R: tt.fields.R,
G: tt.fields.G,
B: tt.fields.B,
A: tt.fields.A,
}
if got := c.Mul(tt.args.d); !reflect.DeepEqual(got, tt.want) {
t.Errorf("RGBA.Mul() = %v, want %v", got, tt.want)
}
})
}
}
func TestRGBA_Scaled(t *testing.T) {
type fields struct {
R float64
G float64
B float64
A float64
}
type args struct {
scale float64
}
tests := []struct {
name string
fields fields
args args
want pixel.RGBA
}{
{
name: "RBGA.Scaled: black <1",
fields: fields{R: 0, G: 0, B: 0, A: 0},
args: args{scale: 0.5},
want: pixel.RGBA{R: 0, G: 0, B: 0, A: 0},
},
{
name: "RBGA.Scaled: black <1",
fields: fields{R: 1, G: 1, B: 1, A: 1},
args: args{scale: 0.5},
want: pixel.RGBA{R: .5, G: .5, B: .5, A: .5},
},
{
name: "RBGA.Scaled: black >1",
fields: fields{R: 0, G: 0, B: 0, A: 0},
args: args{scale: 2},
want: pixel.RGBA{R: 0, G: 0, B: 0, A: 0},
},
{
name: "RBGA.Scaled: black >1",
fields: fields{R: 1, G: 1, B: 1, A: 1},
args: args{scale: 2},
want: pixel.RGBA{R: 2, G: 2, B: 2, A: 2},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
c := pixel.RGBA{
R: tt.fields.R,
G: tt.fields.G,
B: tt.fields.B,
A: tt.fields.A,
}
if got := c.Scaled(tt.args.scale); !reflect.DeepEqual(got, tt.want) {
t.Errorf("RGBA.Scaled() = %v, want %v", got, tt.want)
}
})
}
}
func TestRGBA_RGBA(t *testing.T) {
type fields struct {
R float64
G float64
B float64
A float64
}
tests := []struct {
name string
fields fields
wantR uint32
wantG uint32
wantB uint32
wantA uint32
}{
{
name: "RGBA.RGBA: black",
fields: fields{R: 0, G: 0, B: 0, A: 0},
wantR: 0,
wantG: 0,
wantB: 0,
wantA: 0,
},
{
name: "RGBA.RGBA: white",
fields: fields{R: 1, G: 1, B: 1, A: 1},
wantR: 65535,
wantG: 65535,
wantB: 65535,
wantA: 65535,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
c := pixel.RGBA{
R: tt.fields.R,
G: tt.fields.G,
B: tt.fields.B,
A: tt.fields.A,
}
gotR, gotG, gotB, gotA := c.RGBA()
if gotR != tt.wantR {
t.Errorf("RGBA.RGBA() gotR = %v, want %v", gotR, tt.wantR)
}
if gotG != tt.wantG {
t.Errorf("RGBA.RGBA() gotG = %v, want %v", gotG, tt.wantG)
}
if gotB != tt.wantB {
t.Errorf("RGBA.RGBA() gotB = %v, want %v", gotB, tt.wantB)
}
if gotA != tt.wantA {
t.Errorf("RGBA.RGBA() gotA = %v, want %v", gotA, tt.wantA)
}
})
}
}
func TestToRGBA(t *testing.T) {
type args struct {
c color.Color
}
tests := []struct {
name string
args args
want pixel.RGBA
}{
{
name: "ToRGBA: black",
args: args{c: color.Black},
want: pixel.RGBA{R: 0, G: 0, B: 0, A: 1},
},
{
name: "ToRGBA: white",
args: args{c: color.White},
want: pixel.RGBA{R: 1, G: 1, B: 1, A: 1},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := pixel.ToRGBA(tt.args.c); !reflect.DeepEqual(got, tt.want) {
t.Errorf("ToRGBA() = %v, want %v", got, tt.want)
}
})
}
}