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message_test.go
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message_test.go
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package iso8583
import (
"encoding/hex"
"encoding/json"
"reflect"
"testing"
"time"
"github.com/moov-io/iso8583/encoding"
"github.com/moov-io/iso8583/field"
"github.com/moov-io/iso8583/padding"
"github.com/moov-io/iso8583/prefix"
"github.com/moov-io/iso8583/sort"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestMessage(t *testing.T) {
spec := &MessageSpec{
Fields: map[int]field.Field{
0: field.NewString(&field.Spec{
Length: 4,
Description: "Message Type Indicator",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
}),
1: field.NewBitmap(&field.Spec{
Description: "Bitmap",
Enc: encoding.BytesToASCIIHex,
Pref: prefix.Hex.Fixed,
}),
2: field.NewString(&field.Spec{
Length: 19,
Description: "Primary Account Number",
Enc: encoding.ASCII,
Pref: prefix.ASCII.LL,
}),
3: field.NewComposite(&field.Spec{
Length: 6,
Description: "Processing Code",
Pref: prefix.ASCII.Fixed,
Tag: &field.TagSpec{
Sort: sort.StringsByInt,
},
Subfields: map[string]field.Field{
"1": field.NewString(&field.Spec{
Length: 2,
Description: "Transaction Type",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
}),
"2": field.NewString(&field.Spec{
Length: 2,
Description: "From Account",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
}),
"3": field.NewString(&field.Spec{
Length: 2,
Description: "To Account",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
}),
},
}),
4: field.NewString(&field.Spec{
Length: 12,
Description: "Transaction Amount",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
Pad: padding.Left('0'),
}),
// this field will be ignored when packing and
// unpacking, as bit 65 is a bitmap presence indicator
65: field.NewString(&field.Spec{
Length: 1,
Description: "Settlement Code",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
}),
// this is a field of the third bitmap
130: field.NewString(&field.Spec{
Length: 1,
Description: "Additional Data",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
}),
},
}
t.Run("Test packing and unpacking untyped fields", func(t *testing.T) {
message := NewMessage(spec)
message.MTI("0100")
require.NoError(t, message.Field(2, "4242424242424242"))
require.NoError(t, message.Field(3, "123456"))
require.NoError(t, message.Field(4, "100"))
got, err := message.Pack()
want := "01007000000000000000164242424242424242123456000000000100"
require.NoError(t, err)
require.NotNil(t, got)
require.Equal(t, want, string(got))
message = NewMessage(spec)
err = message.Unpack([]byte(want))
require.NoError(t, err)
s, err := message.GetMTI()
require.NoError(t, err)
require.Equal(t, "0100", s)
s, err = message.GetString(2)
require.NoError(t, err)
require.Equal(t, "4242424242424242", s)
s, err = message.GetString(3)
require.NoError(t, err)
require.Equal(t, "123456", s)
s, err = message.GetString(4)
require.NoError(t, err)
require.Equal(t, "100", s)
})
t.Run("Do not pack fields that match the bitmap presence indicator", func(t *testing.T) {
message := NewMessage(spec)
message.MTI("0100")
require.NoError(t, message.Field(65, "1"))
require.NoError(t, message.Field(130, "1")) // field of third bitmap
got, err := message.Pack()
want := "01008000000000000000800000000000000040000000000000001"
require.NoError(t, err)
require.NotNil(t, got)
require.Equal(t, want, string(got))
message = NewMessage(spec)
err = message.Unpack([]byte(want))
require.NoError(t, err)
s, err := message.GetMTI()
require.NoError(t, err)
require.Equal(t, "0100", s)
s, err = message.GetString(65)
require.NoError(t, err)
require.Equal(t, "", s)
s, err = message.GetString(130)
require.NoError(t, err)
require.Equal(t, "1", s)
})
t.Run("Does not fail when packing and unpacking message with three bitmaps", func(t *testing.T) {
message := NewMessage(spec)
message.MTI("0100")
require.NoError(t, message.Field(130, "1")) // field of third bitmap
got, err := message.Pack()
require.NoError(t, err)
require.NotNil(t, got)
want := "01008000000000000000800000000000000040000000000000001"
require.Equal(t, want, string(got))
message = NewMessage(spec)
err = message.Unpack([]byte(want))
require.NoError(t, err)
s, err := message.GetMTI()
require.NoError(t, err)
require.Equal(t, "0100", s)
s, err = message.GetString(130)
require.NoError(t, err)
require.Equal(t, "1", s)
})
t.Run("Test unpacking with typed fields", func(t *testing.T) {
type TestISOF3Data struct {
F1 *field.String
F2 *field.String
F3 *field.String
}
type ISO87Data struct {
F0 *field.String
F2 *field.String
F3 *TestISOF3Data
F4 *field.String
}
message := NewMessage(spec)
rawMsg := []byte("01007000000000000000164242424242424242123456000000000100")
err := message.Unpack([]byte(rawMsg))
require.NoError(t, err)
s, err := message.GetString(2)
require.NoError(t, err)
require.Equal(t, "4242424242424242", s)
s, err = message.GetString(3)
require.NoError(t, err)
require.Equal(t, "123456", s)
s, err = message.GetString(4)
require.NoError(t, err)
require.Equal(t, "100", s)
data := &ISO87Data{}
require.NoError(t, message.Unmarshal(data))
require.Equal(t, "0100", data.F0.Value())
require.Equal(t, "4242424242424242", data.F2.Value())
require.Equal(t, "12", data.F3.F1.Value())
require.Equal(t, "34", data.F3.F2.Value())
require.Equal(t, "56", data.F3.F3.Value())
require.Equal(t, "100", data.F4.Value())
})
t.Run("Test packing with typed fields", func(t *testing.T) {
type TestISOF3Data struct {
F1 *field.String
F2 *field.String
F3 *field.String
}
type ISO87Data struct {
F0 *field.String
F2 *field.String
F3 *TestISOF3Data
F4 *field.String
}
message := NewMessage(spec)
err := message.SetData(&ISO87Data{
F0: field.NewStringValue("0100"),
F2: field.NewStringValue("4242424242424242"),
F3: &TestISOF3Data{
F1: field.NewStringValue("12"),
F2: field.NewStringValue("34"),
F3: field.NewStringValue("56"),
},
F4: field.NewStringValue("100"),
})
require.NoError(t, err)
rawMsg, err := message.Pack()
require.NoError(t, err)
wantMsg := []byte("01007000000000000000164242424242424242123456000000000100")
require.Equal(t, wantMsg, rawMsg)
})
}
func TestPackUnpack(t *testing.T) {
spec := &MessageSpec{
Fields: map[int]field.Field{
0: field.NewString(&field.Spec{
Length: 4,
Description: "Message Type Indicator",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
}),
1: field.NewBitmap(&field.Spec{
Description: "Bitmap",
Enc: encoding.Binary,
Pref: prefix.ASCII.Fixed,
}),
2: field.NewString(&field.Spec{
Length: 19,
Description: "Primary Account Number",
Enc: encoding.ASCII,
Pref: prefix.ASCII.LL,
}),
3: field.NewComposite(&field.Spec{
Length: 6,
Description: "Processing Code",
Pref: prefix.ASCII.Fixed,
Tag: &field.TagSpec{
Sort: sort.StringsByInt,
},
Subfields: map[string]field.Field{
"1": field.NewString(&field.Spec{
Length: 2,
Description: "Transaction Type",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
}),
"2": field.NewString(&field.Spec{
Length: 2,
Description: "From Account",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
}),
"3": field.NewString(&field.Spec{
Length: 2,
Description: "To Account",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
}),
},
}),
4: field.NewNumeric(&field.Spec{
Length: 12,
Description: "Field 4",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
Pad: padding.Left('0'),
}),
7: field.NewNumeric(&field.Spec{
Length: 10,
Description: "Field 7",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
Pad: padding.Left('0'),
}),
11: field.NewNumeric(&field.Spec{
Length: 6,
Description: "Field 11",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
Pad: padding.Left('0'),
}),
12: field.NewNumeric(&field.Spec{
Length: 6,
Description: "Field 12",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
Pad: padding.Left('0'),
}),
13: field.NewNumeric(&field.Spec{
Length: 4,
Description: "Field 13",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
Pad: padding.Left('0'),
}),
14: field.NewNumeric(&field.Spec{
Length: 4,
Description: "Field 14",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
Pad: padding.Left('0'),
}),
19: field.NewNumeric(&field.Spec{
Length: 3,
Description: "Field 19",
Enc: encoding.BCD,
Pref: prefix.BCD.Fixed,
}),
22: field.NewNumeric(&field.Spec{
Length: 3,
Description: "Field 22",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
}),
25: field.NewNumeric(&field.Spec{
Length: 2,
Description: "Field 25",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
Pad: padding.Left('0'),
}),
32: field.NewNumeric(&field.Spec{
Length: 11,
Description: "Field 32",
Enc: encoding.ASCII,
Pref: prefix.ASCII.LL,
}),
35: field.NewString(&field.Spec{
Length: 37,
Description: "Field 35",
Enc: encoding.ASCII,
Pref: prefix.ASCII.LL,
}),
37: field.NewString(&field.Spec{
Length: 12,
Description: "Field 37",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
}),
39: field.NewString(&field.Spec{
Length: 2,
Description: "Field 39",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
Pad: padding.Left('0'),
}),
41: field.NewString(&field.Spec{
Length: 8,
Description: "Field 41",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
}),
42: field.NewString(&field.Spec{
Length: 15,
Description: "Field 42",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
}),
43: field.NewString(&field.Spec{
Length: 40,
Description: "Field 43",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
Pad: padding.Left(' '),
}),
49: field.NewNumeric(&field.Spec{
Length: 3,
Description: "Field 49",
Enc: encoding.LBCD,
Pref: prefix.BCD.Fixed,
}),
50: field.NewNumeric(&field.Spec{
Length: 3,
Description: "Field 50",
Enc: encoding.LBCD,
Pad: padding.Left('0'),
}),
// this one should be binary...
52: field.NewString(&field.Spec{
Length: 8,
Description: "Field 52",
Enc: encoding.Binary,
Pref: prefix.ASCII.Fixed,
}),
53: field.NewNumeric(&field.Spec{
Length: 16,
Description: "Field 53",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
Pad: padding.Left(' '),
}),
// TLV
55: field.NewComposite(&field.Spec{
Length: 999,
Description: "ICC Data – EMV Having Multiple Tags",
Pref: prefix.ASCII.LLL,
Tag: &field.TagSpec{
Enc: encoding.BerTLVTag,
Sort: sort.StringsByHex,
},
Subfields: map[string]field.Field{
"9A": field.NewString(&field.Spec{
Description: "Transaction Date",
Enc: encoding.Binary,
Pref: prefix.BerTLV,
}),
"9F02": field.NewString(&field.Spec{
Description: "Amount, Authorized (Numeric)",
Enc: encoding.Binary,
Pref: prefix.BerTLV,
}),
},
}),
120: field.NewString(&field.Spec{
Length: 999,
Description: "Field 120",
Enc: encoding.ASCII,
Pref: prefix.ASCII.LLL,
}),
},
}
type TestISOF3Data struct {
F1 *field.String
F2 *field.String
F3 *field.String
}
type TestISOF55Data struct {
F9A *field.String
F9F02 *field.String
}
type TestISOData struct {
F2 *field.String
F3 *TestISOF3Data
F4 *field.Numeric
F7 *field.Numeric
F11 *field.Numeric
F12 *field.Numeric
F13 *field.Numeric
F14 *field.Numeric
F19 *field.Numeric
F22 *field.Numeric
F25 *field.Numeric
F32 *field.Numeric
F35 *field.String
F37 *field.String
F39 *field.String
F41 *field.String
F42 *field.String
F43 *field.String
F49 *field.Numeric
F50 *field.Numeric
F52 *field.String
F53 *field.Numeric
F55 *TestISOF55Data
F120 *field.String
}
t.Run("Pack data", func(t *testing.T) {
message := NewMessage(spec)
err := message.SetData(&TestISOData{
F2: field.NewStringValue("4276555555555555"),
F3: &TestISOF3Data{
F1: field.NewStringValue("00"),
F2: field.NewStringValue("00"),
F3: field.NewStringValue("00"),
},
F4: field.NewNumericValue(77700),
F7: field.NewNumericValue(701111844),
F11: field.NewNumericValue(123),
F12: field.NewNumericValue(131844),
F13: field.NewNumericValue(701),
F14: field.NewNumericValue(1902),
F19: field.NewNumericValue(643),
F22: field.NewNumericValue(901),
F25: field.NewNumericValue(2),
F32: field.NewNumericValue(123456),
F35: field.NewStringValue("4276555555555555=12345678901234567890"),
F37: field.NewStringValue("987654321001"),
F41: field.NewStringValue("00000321"),
F42: field.NewStringValue("120000000000034"),
F43: field.NewStringValue("Test text"),
F49: field.NewNumericValue(643),
// F50 left nil to ensure that it has not been populated in the bitmap
F52: field.NewStringValue(string([]byte{1, 2, 3, 4, 5, 6, 7, 8})),
F53: field.NewNumericValue(1234000000000000),
F55: &TestISOF55Data{
F9A: field.NewStringValue("210720"),
F9F02: field.NewStringValue("000000000501"),
},
F120: field.NewStringValue("Another test text"),
})
require.NoError(t, err)
message.MTI("0100")
got, err := message.Pack()
want := []byte{0x30, 0x31, 0x30, 0x30, 0xf2, 0x3c, 0x24, 0x81, 0x28, 0xe0, 0x9a, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x31, 0x36, 0x34, 0x32, 0x37, 0x36, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x37, 0x37, 0x37, 0x30, 0x30, 0x30, 0x37, 0x30, 0x31, 0x31, 0x31, 0x31, 0x38, 0x34, 0x34, 0x30, 0x30, 0x30, 0x31, 0x32, 0x33, 0x31, 0x33, 0x31, 0x38, 0x34, 0x34, 0x30, 0x37, 0x30, 0x31, 0x31, 0x39, 0x30, 0x32, 0x6, 0x43, 0x39, 0x30, 0x31, 0x30, 0x32, 0x30, 0x36, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x33, 0x37, 0x34, 0x32, 0x37, 0x36, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x3d, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x30, 0x39, 0x38, 0x37, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0x30, 0x30, 0x31, 0x30, 0x30, 0x30, 0x30, 0x30, 0x33, 0x32, 0x31, 0x31, 0x32, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x33, 0x34, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x54, 0x65, 0x73, 0x74, 0x20, 0x74, 0x65, 0x78, 0x74, 0x64, 0x30, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x31, 0x32, 0x33, 0x34, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x32, 0x33, 0x9a, 0x6, 0x32, 0x31, 0x30, 0x37, 0x32, 0x30, 0x9f, 0x2, 0xc, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x35, 0x30, 0x31, 0x30, 0x31, 0x37, 0x41, 0x6e, 0x6f, 0x74, 0x68, 0x65, 0x72, 0x20, 0x74, 0x65, 0x73, 0x74, 0x20, 0x74, 0x65, 0x78, 0x74}
require.NoError(t, err)
require.NotNil(t, got)
require.Equal(t, want, got)
})
t.Run("Unpack data", func(t *testing.T) {
message := NewMessage(spec)
rawMsg := []byte{0x30, 0x31, 0x30, 0x30, 0xf2, 0x3c, 0x24, 0x81, 0x28, 0xe0, 0x9a, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x31, 0x36, 0x34, 0x32, 0x37, 0x36, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x37, 0x37, 0x37, 0x30, 0x30, 0x30, 0x37, 0x30, 0x31, 0x31, 0x31, 0x31, 0x38, 0x34, 0x34, 0x30, 0x30, 0x30, 0x31, 0x32, 0x33, 0x31, 0x33, 0x31, 0x38, 0x34, 0x34, 0x30, 0x37, 0x30, 0x31, 0x31, 0x39, 0x30, 0x32, 0x6, 0x43, 0x39, 0x30, 0x31, 0x30, 0x32, 0x30, 0x36, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x33, 0x37, 0x34, 0x32, 0x37, 0x36, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x3d, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x30, 0x39, 0x38, 0x37, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0x30, 0x30, 0x31, 0x30, 0x30, 0x30, 0x30, 0x30, 0x33, 0x32, 0x31, 0x31, 0x32, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x33, 0x34, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x54, 0x65, 0x73, 0x74, 0x20, 0x74, 0x65, 0x78, 0x74, 0x64, 0x30, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x31, 0x32, 0x33, 0x34, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x32, 0x33, 0x9a, 0x6, 0x32, 0x31, 0x30, 0x37, 0x32, 0x30, 0x9f, 0x2, 0xc, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x35, 0x30, 0x31, 0x30, 0x31, 0x37, 0x41, 0x6e, 0x6f, 0x74, 0x68, 0x65, 0x72, 0x20, 0x74, 0x65, 0x73, 0x74, 0x20, 0x74, 0x65, 0x78, 0x74}
err := message.Unpack([]byte(rawMsg))
require.NoError(t, err)
s, err := message.GetString(2)
require.NoError(t, err)
require.Equal(t, "4276555555555555", s)
s, err = message.GetString(3)
require.NoError(t, err)
require.Equal(t, "000000", s)
s, err = message.GetString(4)
require.NoError(t, err)
require.Equal(t, "77700", s)
data := &TestISOData{}
require.NoError(t, message.Unmarshal(data))
assert.Equal(t, "4276555555555555", data.F2.Value())
assert.Equal(t, "00", data.F3.F1.Value())
assert.Equal(t, "00", data.F3.F2.Value())
assert.Equal(t, "00", data.F3.F3.Value())
assert.Equal(t, 77700, data.F4.Value())
assert.Equal(t, 701111844, data.F7.Value())
assert.Equal(t, 123, data.F11.Value())
assert.Equal(t, 131844, data.F12.Value())
assert.Equal(t, 701, data.F13.Value())
assert.Equal(t, 1902, data.F14.Value())
assert.Equal(t, 643, data.F19.Value())
assert.Equal(t, 901, data.F22.Value())
assert.Equal(t, 2, data.F25.Value())
assert.Equal(t, 123456, data.F32.Value())
assert.Equal(t, "4276555555555555=12345678901234567890", data.F35.Value())
assert.Equal(t, "987654321001", data.F37.Value())
assert.Equal(t, "00000321", data.F41.Value())
assert.Equal(t, "120000000000034", data.F42.Value())
assert.Equal(t, "Test text", data.F43.Value())
assert.Equal(t, 643, data.F49.Value())
assert.Nil(t, data.F50)
assert.Equal(t, string([]byte{1, 2, 3, 4, 5, 6, 7, 8}), data.F52.Value())
assert.Equal(t, 1234000000000000, data.F53.Value())
assert.Equal(t, "210720", data.F55.F9A.Value())
assert.Equal(t, "000000000501", data.F55.F9F02.Value())
assert.Equal(t, "Another test text", data.F120.Value())
})
t.Run("Pack invalid message returns error of *PackError type", func(t *testing.T) {
message := NewMessage(spec)
message.MTI("1")
_, err := message.Pack()
require.Error(t, err)
var packErr *PackError
require.ErrorAs(t, err, &packErr)
})
t.Run("Unpack nil", func(t *testing.T) {
message := NewMessage(spec)
err := message.Unpack(nil)
require.Error(t, err)
var unpackError *UnpackError
require.ErrorAs(t, err, &unpackError)
})
t.Run("Unpack short mti", func(t *testing.T) {
message := NewMessage(spec)
rawMsg := []byte{0x30, 0x31}
err := message.Unpack([]byte(rawMsg))
require.Error(t, err)
var unpackError *UnpackError
require.ErrorAs(t, err, &unpackError)
require.Equal(t, rawMsg, unpackError.RawMessage)
})
// this test should check that BCD fields are packed and
// unpacked correctly it's a confirmation that issue
// https://github.com/moov-io/iso8583/issues/220 is fixed
t.Run("Pack and Unpack BCD fields", func(t *testing.T) {
var spec = &MessageSpec{
Fields: map[int]field.Field{
0: field.NewNumeric(&field.Spec{
Length: 4,
Description: "Message Type Indicator",
Enc: encoding.BCD,
Pref: prefix.BCD.Fixed,
}),
1: field.NewBitmap(&field.Spec{
Description: "Bitmap",
Enc: encoding.Binary,
Pref: prefix.Binary.Fixed,
}),
2: field.NewNumeric(&field.Spec{
Length: 4,
Description: "SomeFixedField",
Enc: encoding.BCD,
Pref: prefix.BCD.Fixed,
}),
3: field.NewNumeric(&field.Spec{
Length: 3,
Description: "SomeVarField",
Enc: encoding.BCD,
Pref: prefix.BCD.LLLL,
}),
},
}
msg := NewMessage(spec)
msg.MTI("1234")
msg.Field(2, "4567")
msg.Field(3, "890")
out, err := msg.Pack()
require.NoError(t, err)
got := hex.EncodeToString(out)
expected := "1234" + // MTI
"6000000000000000" + // Bitmap
"4567" + // SomeFixedField
"0003" + // LLLL in BCD
"0890" // SomeVarField in BCD 0x08 0x90
require.Equal(t, expected, got)
in := NewMessage(spec)
err = in.Unpack(out)
require.NoError(t, err)
result, _ := in.GetField(2).String()
require.Equal(t, "4567", result)
result, _ = in.GetField(3).String()
require.Equal(t, "890", result)
})
}
func TestMessageJSON(t *testing.T) {
spec := &MessageSpec{
Fields: map[int]field.Field{
0: field.NewString(&field.Spec{
Length: 4,
Description: "Message Type Indicator",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
}),
1: field.NewBitmap(&field.Spec{
Description: "Bitmap",
Enc: encoding.BytesToASCIIHex,
Pref: prefix.Hex.Fixed,
}),
2: field.NewString(&field.Spec{
Length: 19,
Description: "Primary Account Number",
Enc: encoding.ASCII,
Pref: prefix.ASCII.LL,
}),
3: field.NewComposite(&field.Spec{
Length: 6,
Description: "Processing Code",
Pref: prefix.ASCII.Fixed,
Tag: &field.TagSpec{
Sort: sort.StringsByInt,
},
Subfields: map[string]field.Field{
"1": field.NewString(&field.Spec{
Length: 2,
Description: "Transaction Type",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
}),
"2": field.NewString(&field.Spec{
Length: 2,
Description: "From Account",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
}),
"3": field.NewString(&field.Spec{
Length: 2,
Description: "To Account",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
}),
},
}),
4: field.NewString(&field.Spec{
Length: 12,
Description: "Transaction Amount",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
Pad: padding.Left('0'),
}),
45: field.NewTrack1(&field.Spec{
Length: 76,
Description: "Track 1 Data",
Enc: encoding.ASCII,
Pref: prefix.ASCII.LL,
}),
},
}
type TestISOF3Data struct {
F1 *field.String
F2 *field.String
F3 *field.String
}
type TestISOData struct {
F0 *field.String
F2 *field.String
F3 *TestISOF3Data
F4 *field.String
F45 *field.Track1
}
t.Run("Test JSON encoding typed", func(t *testing.T) {
expDate, err := time.Parse("0601", "9901")
require.NoError(t, err)
message := NewMessage(spec)
err = message.SetData(&TestISOData{
F0: field.NewStringValue("0100"),
F2: field.NewStringValue("4242424242424242"),
F3: &TestISOF3Data{
F1: field.NewStringValue("12"),
F2: field.NewStringValue("34"),
F3: field.NewStringValue("56"),
},
F4: field.NewStringValue("100"),
F45: &field.Track1{
FixedLength: true,
FormatCode: "B",
PrimaryAccountNumber: "1234567890123445",
ServiceCode: "120",
DiscretionaryData: "0000000000000**XXX******",
ExpirationDate: &expDate,
Name: "PADILLA/L.",
},
})
require.NoError(t, err)
want := `{"0":"0100","1":"7000000000080000","2":"4242424242424242","3":{"1":"12","2":"34","3":"56"},"4":"100","45":{"fixed_length":true,"format_code":"B","primary_account_number":"1234567890123445","name":"PADILLA/L.","expiration_date":"1999-01-01T00:00:00Z","service_code":"120","discretionary_data":"0000000000000**XXX******"}}`
got, err := json.Marshal(message)
require.NoError(t, err)
require.Equal(t, want, string(got))
})
t.Run("Test JSON encoding untyped", func(t *testing.T) {
message := NewMessage(spec)
message.MTI("0100")
message.Field(2, "4242424242424242")
message.Field(4, "100")
want := `{"0":"0100","1":"5000000000000000","2":"4242424242424242","4":"100"}`
got, err := json.Marshal(message)
require.NoError(t, err)
require.Equal(t, want, string(got))
})
t.Run("Test JSON encoding of unpacked fields typed", func(t *testing.T) {
type TestISOF3Data struct {
F1 *field.String
F2 *field.String
F3 *field.String
}
type ISO87Data struct {
F0 *field.String
F2 *field.String
F3 *TestISOF3Data
F4 *field.String
}
want := `{"0":"0100","1":"7000000000000000","2":"4242424242424242","3":{"1":"12","2":"34","3":"56"},"4":"100"}`
message := NewMessage(spec)
message.SetData(&ISO87Data{})
rawMsg := []byte("01007000000000000000164242424242424242123456000000000100")
require.NoError(t, message.Unpack([]byte(rawMsg)))
got, err := json.Marshal(message)
require.NoError(t, err)
require.Equal(t, want, string(got))
})
t.Run("Test JSON encoding of unpacked fields untyped", func(t *testing.T) {
want := `{"0":"0100","1":"7000000000000000","2":"4242424242424242","3":{"1":"12","2":"34","3":"56"},"4":"100"}`
message := NewMessage(spec)
rawMsg := []byte("01007000000000000000164242424242424242123456000000000100")
require.NoError(t, message.Unpack([]byte(rawMsg)))
got, err := json.Marshal(message)
require.NoError(t, err)
require.Equal(t, want, string(got))
})
t.Run("Test JSON decoding typed", func(t *testing.T) {
message := NewMessage(spec)
input := []byte(`{"0":"0100","1":"7000000000000000","2":"4242424242424242","3":{"1":"12","2":"34","3":"56"},"4":"100"}`)
want := &TestISOData{
F0: field.NewStringValue("0100"),
F2: field.NewStringValue("4242424242424242"),
F3: &TestISOF3Data{
F1: field.NewStringValue("12"),
F2: field.NewStringValue("34"),
F3: field.NewStringValue("56"),
},
F4: field.NewStringValue("100"),
}
require.NoError(t, json.Unmarshal(input, message))
data := &TestISOData{}
require.NoError(t, message.Unmarshal(data))
require.Equal(t, want.F0.Value(), data.F0.Value())
require.Equal(t, want.F2.Value(), data.F2.Value())
require.Equal(t, want.F3.F1.Value(), data.F3.F1.Value())
require.Equal(t, want.F3.F2.Value(), data.F3.F2.Value())
require.Equal(t, want.F3.F3.Value(), data.F3.F3.Value())
require.Equal(t, want.F4.Value(), data.F4.Value())
})
t.Run("Test JSON decoding untyped", func(t *testing.T) {
message := NewMessage(spec)
input := `{"0":"0100","1":"5000000000000000","2":"4242424242424242","4":"100"}`
err := json.Unmarshal([]byte(input), message)
require.NoError(t, err)
mti, err := message.GetMTI()
require.NoError(t, err)
require.Equal(t, "0100", mti)
f2, err := message.GetString(2)
require.NoError(t, err)
require.Equal(t, "4242424242424242", f2)
f4, err := message.GetString(4)
require.NoError(t, err)
require.Equal(t, "100", f4)
})
}
func TestMessageClone(t *testing.T) {
spec := &MessageSpec{
Fields: map[int]field.Field{
0: field.NewString(&field.Spec{
Length: 4,
Description: "Message Type Indicator",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
}),
1: field.NewBitmap(&field.Spec{
Description: "Bitmap",
Enc: encoding.Binary,
Pref: prefix.ASCII.Fixed,
}),
2: field.NewString(&field.Spec{
Length: 19,
Description: "Primary Account Number",
Enc: encoding.ASCII,
Pref: prefix.ASCII.LL,
}),
3: field.NewComposite(&field.Spec{
Length: 6,
Description: "Processing Code",
Pref: prefix.ASCII.Fixed,
Tag: &field.TagSpec{
Sort: sort.StringsByInt,
},
Subfields: map[string]field.Field{
"1": field.NewString(&field.Spec{
Length: 2,
Description: "Transaction Type",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
}),
"2": field.NewString(&field.Spec{
Length: 2,
Description: "From Account",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
}),
"3": field.NewString(&field.Spec{
Length: 2,
Description: "To Account",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
}),
},
}),
4: field.NewNumeric(&field.Spec{
Length: 12,
Description: "Field 4",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
Pad: padding.Left('0'),
}),
7: field.NewNumeric(&field.Spec{
Length: 10,
Description: "Field 7",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
Pad: padding.Left('0'),
}),
11: field.NewNumeric(&field.Spec{
Length: 6,
Description: "Field 11",
Enc: encoding.ASCII,
Pref: prefix.ASCII.Fixed,
Pad: padding.Left('0'),
}),
12: field.NewNumeric(&field.Spec{
Length: 6,
Description: "Field 12",