Add IBAN validation constraint#93
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strider2038 merged 4 commits intoApr 5, 2026
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- validate.IBAN with mod-97 check and Symfony 7.2 country patterns - it.IsIBAN, is.IBAN, ErrInvalidIBAN, EN/RU messages - Tests and examples; changelog entry Co-authored-by: Igor Lazarev <strider2038@yandex.ru>
- Named subtests; valid samples for BE, AT, IT, SE - Canonicalization: only spaces/NBSP, too short, bad UTF-8 prefixes - Reject: non-alpha country, non-numeric check digits, BBAN vs pattern, tab Co-authored-by: Igor Lazarev <strider2038@yandex.ru>
- Valid samples exercising Symfony regex branches (trailing letters, long BBAN) - Negative: BR with correct length/pattern but failing mod-97; SC wrong total length; MU bank code width Co-authored-by: Igor Lazarev <strider2038@yandex.ru>
… digits, mixed whitespace (#94) Co-authored-by: Cursor Agent <cursoragent@cursor.com>
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Summary
Adds International Bank Account Number (IBAN) validation aligned with Symfony's
Iban/IbanValidator(country-specific patterns from Symfony 7.2, space/NBSP/NNBSP stripping, upper-case normalization, check digit range 02–98, mod-97 checksum).Public API
it.IsIBAN()— string constraint (empty values skipped, same as other identifier constraints)validate.IBAN(value string) error— returnsvalidate.ErrInvalidIBANon failureis.IBAN(value string) boolvalidation.ErrInvalidIBAN/message.InvalidIBANwith English and Russian translationsFiles
validate/iban.go— validation logicvalidate/iban_formats.go— generated regexp map from SymfonyIbanValidatorFORMATSTesting
go test -race ./...golangci-lint run(v2.11.4)