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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package coding
import (
"bytes"
"testing"
"github.com/mattermost/rsc/gf256"
"github.com/mattermost/rsc/qr/libqrencode"
)
func test(t *testing.T, v Version, l Level, text ...Encoding) bool {
s := ""
ty := libqrencode.EightBit
switch x := text[0].(type) {
case String:
s = string(x)
case Alpha:
s = string(x)
ty = libqrencode.Alphanumeric
case Num:
s = string(x)
ty = libqrencode.Numeric
}
key, err := libqrencode.Encode(libqrencode.Version(v), libqrencode.Level(l), ty, s)
if err != nil {
t.Errorf("libqrencode.Encode(%v, %v, %d, %#q): %v", v, l, ty, s, err)
return false
}
mask := (^key.Pixel[8][2]&1)<<2 | (key.Pixel[8][3]&1)<<1 | (^key.Pixel[8][4] & 1)
p, err := NewPlan(v, l, Mask(mask))
if err != nil {
t.Errorf("NewPlan(%v, L, %d): %v", v, err, mask)
return false
}
if len(p.Pixel) != len(key.Pixel) {
t.Errorf("%v: NewPlan uses %dx%d, libqrencode uses %dx%d", v, len(p.Pixel), len(p.Pixel), len(key.Pixel), len(key.Pixel))
return false
}
c, err := p.Encode(text...)
if err != nil {
t.Errorf("Encode: %v", err)
return false
}
badpix := 0
Pixel:
for y, prow := range p.Pixel {
for x, pix := range prow {
pix &^= Black
if c.Black(x, y) {
pix |= Black
}
keypix := key.Pixel[y][x]
want := Pixel(0)
switch {
case keypix&libqrencode.Finder != 0:
want = Position.Pixel()
case keypix&libqrencode.Alignment != 0:
want = Alignment.Pixel()
case keypix&libqrencode.Timing != 0:
want = Timing.Pixel()
case keypix&libqrencode.Format != 0:
want = Format.Pixel()
want |= OffsetPixel(pix.Offset()) // sic
want |= pix & Invert
case keypix&libqrencode.PVersion != 0:
want = PVersion.Pixel()
case keypix&libqrencode.DataECC != 0:
if pix.Role() == Check || pix.Role() == Extra {
want = pix.Role().Pixel()
} else {
want = Data.Pixel()
}
want |= OffsetPixel(pix.Offset())
want |= pix & Invert
default:
want = Unused.Pixel()
}
if keypix&libqrencode.Black != 0 {
want |= Black
}
if pix != want {
t.Errorf("%v/%v: Pixel[%d][%d] = %v, want %v %#x", v, mask, y, x, pix, want, keypix)
if badpix++; badpix >= 100 {
t.Errorf("stopping after %d bad pixels", badpix)
break Pixel
}
}
}
}
return badpix == 0
}
var input = []Encoding{
String("hello"),
Num("1"),
Num("12"),
Num("123"),
Alpha("AB"),
Alpha("ABC"),
}
func TestVersion(t *testing.T) {
badvers := 0
Version:
for v := Version(1); v <= 40; v++ {
for l := L; l <= H; l++ {
for _, in := range input {
if !test(t, v, l, in) {
if badvers++; badvers >= 10 {
t.Errorf("stopping after %d bad versions", badvers)
break Version
}
}
}
}
}
}
func TestEncode(t *testing.T) {
data := []byte{0x10, 0x20, 0x0c, 0x56, 0x61, 0x80, 0xec, 0x11, 0xec, 0x11, 0xec, 0x11, 0xec, 0x11, 0xec, 0x11}
check := []byte{0xa5, 0x24, 0xd4, 0xc1, 0xed, 0x36, 0xc7, 0x87, 0x2c, 0x55}
rs := gf256.NewRSEncoder(Field, len(check))
out := make([]byte, len(check))
rs.ECC(data, out)
if !bytes.Equal(out, check) {
t.Errorf("have %x want %x", out, check)
}
}
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