47 lines
1.3 KiB
Go
47 lines
1.3 KiB
Go
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package ean
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import (
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"image/color"
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"testing"
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)
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func testHelper(t *testing.T, testCode, testResult, kind string, checkMetadata bool) {
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code, err := Encode(testCode)
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if err != nil {
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t.Error(err)
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}
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if checkMetadata && (code.Metadata().Dimensions != 1 || code.Content() != testCode || code.Metadata().CodeKind != kind) {
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t.Error("Metadata missmatch")
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}
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if len(testResult) != code.Bounds().Max.X {
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t.Fail()
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}
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for i, r := range testResult {
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if (code.At(i, 0) == color.Black) != (r == '1') {
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t.Fail()
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}
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}
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}
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func Test_EncodeEAN(t *testing.T) {
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testHelper(t, "5901234123457", "10100010110100111011001100100110111101001110101010110011011011001000010101110010011101000100101", "EAN 13", true)
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testHelper(t, "55123457", "1010110001011000100110010010011010101000010101110010011101000100101", "EAN 8", true)
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testHelper(t, "5512345", "1010110001011000100110010010011010101000010101110010011101000100101", "EAN 8", false)
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_, err := Encode("55123458") //<-- Invalid checksum
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if err == nil {
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t.Error("Invalid checksum not detected")
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}
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_, err = Encode("invalid")
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if err == nil {
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t.Error("\"invalid\" should not be encodable")
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}
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_, err = Encode("invalid")
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if err == nil {
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t.Error("\"invalid\" should not be encodable")
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}
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bits := encodeEAN13("invalid error")
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if bits != nil {
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t.Error("\"invalid error\" should not be encodable")
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}
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}
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