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fixed bug in ean encoder and added some tests

This commit is contained in:
boombuler 2013-12-20 15:37:07 +01:00
parent b63e15f7ff
commit e8eca3ad75
2 changed files with 50 additions and 6 deletions
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4
ean/encoder.go
View File

@ -78,14 +78,14 @@ var encoderTable map[rune]encodedNumber = map[rune]encodedNumber{
}
func runeToInt(r rune) int {
if r >= '0' || r <= '9' {
if r >= '0' && r <= '9' {
return int(r - '0')
}
return -1
}
func intToRune(i int) rune {
if i >= 0 || i <= 9 {
if i >= 0 && i <= 9 {
return rune(i + '0')
}
return 'F'

52
ean/encoder_test.go
View File

@ -5,19 +5,63 @@ import (
"testing"
)
func Test_EncodeEAN13(t *testing.T) {
testResult := "10100010110100111011001100100110111101001110101010110011011011001000010101110010011101000100101"
testCode := "5901234123457"
func testHelper(t *testing.T, testCode, testResult, kind string, checkMetadata bool) {
code, err := Encode(testCode)
if err != nil {
t.Error(err)
}
if code.Metadata().Dimensions != 1 || code.Content() != testCode || code.Metadata().CodeKind != "EAN 13" {
if checkMetadata && (code.Metadata().Dimensions != 1 || code.Content() != testCode || code.Metadata().CodeKind != kind) {
t.Error("Metadata missmatch")
}
if len(testResult) != code.Bounds().Max.X {
t.Fail()
}
for i, r := range testResult {
if (code.At(i, 0) == color.Black) != (r == '1') {
t.Fail()
}
}
}
func Test_EncodeEAN(t *testing.T) {
testHelper(t, "5901234123457", "10100010110100111011001100100110111101001110101010110011011011001000010101110010011101000100101", "EAN 13", true)
testHelper(t, "55123457", "1010110001011000100110010010011010101000010101110010011101000100101", "EAN 8", true)
testHelper(t, "5512345", "1010110001011000100110010010011010101000010101110010011101000100101", "EAN 8", false)
_, err := Encode("55123458") //<-- Invalid checksum
if err == nil {
t.Error("Invalid checksum not detected")
}
_, err = Encode("invalid")
if err == nil {
t.Error("\"invalid\" should not be encodable")
}
_, err = Encode("invalid")
if err == nil {
t.Error("\"invalid\" should not be encodable")
}
bits := encodeEAN13("invalid error")
if bits != nil {
t.Error("\"invalid error\" should not be encodable")
}
}
func Test_RuneToIntIntToRune(t *testing.T) {
if intToRune(0) != '0' {
t.Errorf("failed intToRune(0) returned %d", string(intToRune(0)))
}
if intToRune(9) != '9' {
t.Errorf("failed intToRune(9) returned %d", intToRune(9))
}
if intToRune(10) != 'F' {
t.Errorf("failed intToRune(10) returned %d", intToRune(10))
}
if runeToInt('0') != 0 {
t.Error("failed runeToInt('0') returned %d", runeToInt(0))
}
if runeToInt('9') != 9 {
t.Error("failed runeToInt('9') returned %d", runeToInt(9))
}
if runeToInt('F') != -1 {
t.Error("failed runeToInt('F') returned %d", runeToInt('F'))
}
}