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Implement IBAN generation #172

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merged 4 commits into from
Apr 24, 2024
Merged

Implement IBAN generation #172

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d68c025
Add IBAN generation
antfroger Apr 22, 2024
3a9523c
Move all IBAN related code inside iban.go
antfroger Apr 23, 2024
fdc4268
Fix 'Unused method receiver RVV-B0013'
antfroger Apr 23, 2024
e49dede
Fix 'Unused method receiver RVV-B0013'
antfroger Apr 23, 2024
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42 changes: 42 additions & 0 deletions iban.go
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Original file line number Diff line number Diff line change
@@ -0,0 +1,42 @@
package faker

import (
"fmt"
"strconv"
"strings"
)

func ibanChecksum(iban string) string {
iban = strings.ToUpper(strings.ReplaceAll(iban, " ", ""))

// Move first 4 characters to the end, and set checksum to 00
iban = iban[4:] + iban[:2] + "00"

// Replace letters with their respective numbers
var numericIBAN string
for _, char := range iban {
if char >= 'A' && char <= 'Z' {
numericIBAN += strconv.Itoa(int(char - 'A' + 10))
} else {
numericIBAN += string(char)
}
}

// Perform modulo 97 operation on the numeric IBAN
remainder := 0
for _, char := range numericIBAN {
digit := int(char - '0')
remainder = (remainder*10 + digit) % 97
}

// Calculate checksum
checksum := 98 - remainder
if checksum < 10 {
return fmt.Sprintf("0%d", checksum)
}
return fmt.Sprintf("%d", checksum)
}

func isIbanValid(iban string) bool {
return ibanChecksum(iban) == iban[2:4]
}
225 changes: 225 additions & 0 deletions iban_test.go
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Original file line number Diff line number Diff line change
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package faker

import (
"testing"
)

func TestIbanChecksum(t *testing.T) {
var ibans = map[string]string{
"AL00212110090000000235698741": "47",
"AD0000012030200359100100": "12",
"AT001904300234573201": "61",
"AZ00NABZ00000000137010001944": "21",
"BH00BMAG00001299123456": "67",
"BE00539007547034": "68",
"BA001290079401028494": "39",
"BR0024891749412660603618210F3": "77",
"BG00BNBG96611020345678": "80",
"CR0015202001026284066": "05",
"HR0010010051863000160": "12",
"CY00002001280000001200527600": "17",
"CZ0008000000192000145399": "65",
"DK0000400440116243": "50",
"DO00BAGR00000001212453611324": "28",
"EE002200221020145685": "38",
"FO0064600001631634": "62",
"FI0012345600000785": "21",
"FR0020041010050500013M02606": "14",
"GE00NB0000000101904917": "29",
"DE00370400440532013000": "89",
"GI00NWBK000000007099453": "75",
"GR0001101250000000012300695": "16",
"GL0064710001000206": "89",
"GT00TRAJ01020000001210029690": "82",
"HU00117730161111101800000000": "42",
"IS000159260076545510730339": "14",
"IE00AIBK93115212345678": "29",
"IL000108000000099999999": "62",
"IT00X0542811101000000123456": "60",
"KZ00125KZT5004100100": "86",
"KW00CBKU0000000000001234560101": "81",
"LV00BANK0000435195001": "80",
"LB00099900000001001901229114": "62",
"LI00088100002324013AA": "21",
"LT001000011101001000": "12",
"LU000019400644750000": "28",
"MK00250120000058984": "07",
"MT00MALT011000012345MTLCAST001S": "84",
"MR0000020001010000123456753": "13",
"MU00BOMM0101101030300200000MUR": "17",
"MD00AG000225100013104168": "24",
"MC0011222000010123456789030": "58",
"ME00505000012345678951": "25",
"NL00ABNA0417164300": "91",
"NO0086011117947": "93",
"PK00SCBL0000001123456702": "36",
"PL00109010140000071219812874": "61",
"PS00PALS000000000400123456702": "92",
"PT00000201231234567890154": "50",
"QA00DOHB00001234567890ABCDEFG": "58",
"RO00AAAA1B31007593840000": "49",
"SM00U0322509800000000270100": "86",
"SA0080000000608010167519": "03",
"RS00260005601001611379": "35",
"SK0012000000198742637541": "31",
"SI00263300012039086": "56",
"ES0021000418450200051332": "91",
"SE0050000000058398257466": "45",
"CH0000762011623852957": "93",
"TN0010006035183598478831": "59",
"TR000006100519786457841326": "33",
"AE000331234567890123456": "07",
"GB00NWBK60161331926819": "29",
"VG00VPVG0000012345678901": "96",
"YY00KIHB12476423125915947930915268": "24",
"ZZ00VLQT382332233206588011313776421": "25",
}

for iban, checksum := range ibans {
Expect(t, checksum, ibanChecksum(iban))
}
}

func TestIsIbanValid(t *testing.T) {
ibans := map[string]bool{
"AL47212110090000000235698741": true,
"AD1200012030200359100100": true,
"AT611904300234573201": true,
"AZ21NABZ00000000137010001944": true,
"BH67BMAG00001299123456": true,
"BE68539007547034": true,
"BA391290079401028494": true,
"BR7724891749412660603618210F3": true,
"BG80BNBG96611020345678": true,
"CR0515202001026284066": true,
"HR1210010051863000160": true,
"CY17002001280000001200527600": true,
"CZ6508000000192000145399": true,
"DK5000400440116243": true,
"DO28BAGR00000001212453611324": true,
"EE382200221020145685": true,
"FO6264600001631634": true,
"FI2112345600000785": true,
"FR1420041010050500013M02606": true,
"GE29NB0000000101904917": true,
"DE89370400440532013000": true,
"GI75NWBK000000007099453": true,
"GR1601101250000000012300695": true,
"GL8964710001000206": true,
"GT82TRAJ01020000001210029690": true,
"HU42117730161111101800000000": true,
"IS140159260076545510730339": true,
"IE29AIBK93115212345678": true,
"IL620108000000099999999": true,
"IT60X0542811101000000123456": true,
"KZ86125KZT5004100100": true,
"KW81CBKU0000000000001234560101": true,
"LV80BANK0000435195001": true,
"LB62099900000001001901229114": true,
"LI21088100002324013AA": true,
"LT121000011101001000": true,
"LU280019400644750000": true,
"MK07250120000058984": true,
"MT84MALT011000012345MTLCAST001S": true,
"MR1300020001010000123456753": true,
"MU17BOMM0101101030300200000MUR": true,
"MD24AG000225100013104168": true,
"MC5811222000010123456789030": true,
"ME25505000012345678951": true,
"NL91ABNA0417164300": true,
"NO9386011117947": true,
"PK36SCBL0000001123456702": true,
"PL61109010140000071219812874": true,
"PS92PALS000000000400123456702": true,
"PT50000201231234567890154": true,
"QA58DOHB00001234567890ABCDEFG": true,
"RO49AAAA1B31007593840000": true,
"SM86U0322509800000000270100": true,
"SA0380000000608010167519": true,
"RS35260005601001611379": true,
"SK3112000000198742637541": true,
"SI56263300012039086": true,
"ES9121000418450200051332": true,
"SE4550000000058398257466": true,
"CH9300762011623852957": true,
"TN5910006035183598478831": true,
"TR330006100519786457841326": true,
"AE070331234567890123456": true,
"GB29NWBK60161331926819": true,
"VG96VPVG0000012345678901": true,
"YY24KIHB12476423125915947930915268": true,
"ZZ25VLQT382332233206588011313776421": true,

"AL4721211009000000023569874": false,
"AD120001203020035910010": false,
"AT61190430023457320": false,
"AZ21NABZ0000000013701000194": false,
"BH67BMAG0000129912345": false,
"BE6853900754703": false,
"BA39129007940102849": false,
"BR7724891749412660603618210F": false,
"BG80BNBG9661102034567": false,
"CR051520200102628406": false,
"HR121001005186300016": false,
"CY1700200128000000120052760": false,
"CZ650800000019200014539": false,
"DK500040044011624": false,
"DO28BAGR0000000121245361132": false,
"EE38220022102014568": false,
"FO626460000163163": false,
"FI2112345600000780": false,
"FR1420041010050500013M0260": false,
"GE29NB000000010190491": false,
"DE8937040044053201300": false,
"GI75NWBK00000000709945": false,
"GR160110125000000001230069": false,
"GL896471000100020": false,
"GT82TRAJ0102000000121002969": false,
"HU4211773016111110180000000": false,
"IS14015926007654551073033": false,
"IE29AIBK9311521234567": false,
"IL62010800000009999999": false,
"IT60X054281110100000012345": false,
"KZ86125KZT500410010": false,
"KW81CBKU000000000000123456010": false,
"LV80BANK000043519500": false,
"LB6209990000000100190122911": false,
"LI21088100002324013A": false,
"LT12100001110100100": false,
"LU28001940064475000": false,
"MK0725012000005898": false,
"MT84MALT011000012345MTLCAST001": false,
"MR130002000101000012345675": false,
"MU17BOMM0101101030300200000MU": false,
"MD24AG00022510001310416": false,
"MC58112220000101234567890": false,
"ME2550500001234567895": false,
"NL91ABNA041716430": false,
"NO938601111794": false,
"PK36SCBL000000112345670": false,
"PL6110901014000007121981287": false,
"PS92PALS00000000040012345670": false,
"PT5000020123123456789015": false,
"QA58DOHB00001234567890ABCDEF": false,
"RO49AAAA1B3100759384000": false,
"SM86U032250980000000027010": false,
"SA038000000060801016751": false,
"RS3526000560100161137": false,
"SK311200000019874263754": false,
"SI5626330001203908": false,
"ES912100041845020005133": false,
"SE455000000005839825746": false,
"CH930076201162385295": false,
"TN591000603518359847883": false,
"TR33000610051978645784132": false,
"AE07033123456789012345": false,
"GB29NWBK6016133192681": false,
"VG96VPVG000001234567890": false,
"YY24KIHB1247642312591594793091526": false,
"ZZ25VLQT38233223320658801131377642": false,
}

for iban, expected := range ibans {
Expect(t, expected, isIbanValid(iban))
}
}
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