ref: 9f6a5105c5f00becacda853aaba00603020f941d
dir: /browser/duitx/scroll_test.go/
package duitx
import (
"9fans.net/go/draw"
"github.com/mjl-/duit"
"image"
"testing"
"time"
)
func TestFreeCur(t *testing.T) {
ui := &Scroll{
r: image.Rectangle{
Min: image.Point{0, 0},
Max: image.Point{100, 1000},
},
Offset: 1,
tiles: make(map[int]*draw.Image),
last: make(map[int]time.Time),
}
dui, err := duit.NewDUI("scroll_test", nil)
if err != nil {
t.Fatalf("err: %v", err)
}
r := rect(draw.Point{100, 100})
for i := 0; i < 10; i++ {
ui.tiles[i], err = dui.Display.AllocImage(r, draw.ARGB32, false, 0xff00ff00)
if err != nil {
t.Fatalf("err: %v", err)
}
}
ui.freeCur()
if len(ui.tiles) != 8 {
t.Fail()
}
}
func TestPos(t *testing.T) {
s := &Scroll{
r: image.Rectangle{
Min: image.Point{0, 0},
Max: image.Point{1600, 1200},
},
Offset: 0,
}
if i, of := s.pos(); i != 0 || of != 0 {
t.Fatalf("%v %v", i, of)
}
s.Offset = 3400
if i, of := s.pos(); i != 2 || of != 1000 {
t.Fatalf("%v %v", i, of)
}
}
func TestTlR(t *testing.T) {
s := &Scroll{
r: image.Rectangle{
Min: image.Point{0, 0},
Max: image.Point{1600, 1200},
},
}
if r := s.tlR(0); r.Min.X != 0 || r.Min.Y != 0 || r.Dx() != 1600 || r.Dy() != 1200 {
t.Fatalf("%v", r)
}
if r := s.tlR(2); r.Min.X != 0 || r.Min.Y != 2400 || r.Dx() != 1600 || r.Dy() != 1200 {
t.Fatalf("%v", r)
}
}