112 lines
2.6 KiB
Go
112 lines
2.6 KiB
Go
package apdu
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import (
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"bytes"
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"testing"
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"github.com/status-im/keycard-go/hexutils"
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"github.com/stretchr/testify/assert"
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)
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func TestFindTag(t *testing.T) {
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var (
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tagData []byte
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err error
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)
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data := hexutils.HexToBytes("C1 02 BB CC C2 04 C3 02 11 22 C3 02 88 99")
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tagData, err = FindTag(data, uint8(0xC1))
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assert.NoError(t, err)
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assert.Equal(t, "BB CC", hexutils.BytesToHexWithSpaces(tagData))
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tagData, err = FindTag(data, uint8(0xC2))
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assert.NoError(t, err)
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assert.Equal(t, "C3 02 11 22", hexutils.BytesToHexWithSpaces(tagData))
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tagData, err = FindTag(data, uint8(0xC3))
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assert.NoError(t, err)
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assert.Equal(t, "88 99", hexutils.BytesToHexWithSpaces(tagData))
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tagData, err = FindTag(data, uint8(0xC2), uint8(0xC3))
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assert.NoError(t, err)
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assert.Equal(t, "11 22", hexutils.BytesToHexWithSpaces(tagData))
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// tag not found
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data = hexutils.HexToBytes("C1 00")
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_, err = FindTag(data, uint8(0xC2))
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assert.Equal(t, &ErrTagNotFound{uint8(0xC2)}, err)
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// sub-tag not found
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data = hexutils.HexToBytes("C1 02 C2 00")
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_, err = FindTag(data, uint8(0xC1), uint8(0xC3))
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assert.Equal(t, &ErrTagNotFound{uint8(0xC3)}, err)
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}
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func TestParseLength(t *testing.T) {
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scenarios := []struct {
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data []byte
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expectedLength uint32
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err error
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}{
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{
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data: []byte{0x01, 0xAA},
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expectedLength: 1,
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err: nil,
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},
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{
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data: []byte{0x7F, 0xAA},
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expectedLength: 127,
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err: nil,
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},
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{
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data: []byte{0x81, 0x80, 0xAA},
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expectedLength: 128,
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err: nil,
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},
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{
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data: []byte{0x82, 0x80, 0x80, 0xAA},
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expectedLength: 32896,
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err: nil,
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},
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{
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data: []byte{0x83, 0x80, 0x80, 0x80, 0xAA},
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expectedLength: 8421504,
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err: nil,
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},
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{
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data: []byte{0x80, 0xAA},
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expectedLength: 0,
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err: ErrUnsupportedLenth80,
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},
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{
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data: []byte{0x84, 0xAA},
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expectedLength: 0,
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err: ErrLengthTooBig,
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},
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}
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for _, s := range scenarios {
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buf := bytes.NewBuffer(s.data)
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length, _, err := parseLength(buf)
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if s.err == nil {
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assert.NoError(t, err)
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assert.Equal(t, s.expectedLength, length)
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} else {
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assert.Equal(t, s.err, err)
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}
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}
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}
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func TestFindTagN(t *testing.T) {
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data := hexutils.HexToBytes("0A 01 A1 0A 01 A2")
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tagData, err := FindTagN(data, 0, uint8(0x0A))
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assert.NoError(t, err)
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assert.Equal(t, "A1", hexutils.BytesToHexWithSpaces(tagData))
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tagData, err = FindTagN(data, 1, uint8(0x0A))
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assert.NoError(t, err)
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assert.Equal(t, "A2", hexutils.BytesToHexWithSpaces(tagData))
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}
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