From dd6da8fce92cf9611a857eecd220d92bee3aadc4 Mon Sep 17 00:00:00 2001
From: Daniel Kostro <kostro.d@gmail.com>
Date: Sat, 7 Mar 2026 12:53:54 +0100
Subject: [PATCH] tests: remove dead code and add a test case

---
 src/parse/__tests__/td1.test.ts            | 45 ++++++++++++++++++++++
 src/parse/td1Fields.ts                     | 13 +------
 src/parsers/parseDocumentNumberOptional.ts | 27 ++++---------
 3 files changed, 53 insertions(+), 32 deletions(-)

diff --git a/src/parse/__tests__/td1.test.ts b/src/parse/__tests__/td1.test.ts
index 0b89373..df44f30 100644
--- a/src/parse/__tests__/td1.test.ts
+++ b/src/parse/__tests__/td1.test.ts
@@ -188,6 +188,51 @@ describe('parse TD1', () => {
     });
   });
 
+  it('PRADO Portugal ID PRT-BO-04001 - valid', () => {
+    // source: https://www.consilium.europa.eu/prado/en/PRT-BO-04001/index.html
+    const MRZ = [
+      'I<PRT007666667<ZZ00<<<<<<<<<<<',
+      '8303143M3405293PRT<<<<<<<<<<<4',
+      'CACADOR<DE<ARAUJO<<ANDRE<ESTEV',
+    ];
+
+    const result = parse(MRZ);
+
+    expect(result).toMatchObject({
+      format: 'TD1',
+      valid: true,
+      documentNumber: result.fields.documentNumber,
+    });
+
+    expect(result.fields).toStrictEqual({
+      documentCode: 'I',
+      issuingState: 'PRT',
+      documentNumber: '007666667ZZ0',
+      documentNumberCheckDigit: '0',
+      birthDate: '830314',
+      birthDateCheckDigit: '3',
+      sex: 'male',
+      expirationDate: '340529',
+      expirationDateCheckDigit: '3',
+      nationality: 'PRT',
+      optional1: 'ZZ00',
+      optional2: '',
+      compositeCheckDigit: '4',
+      lastName: 'CACADOR DE ARAUJO',
+      firstName: 'ANDRE ESTEV',
+    });
+
+    const optional1Details = result.details.find(
+      (d) => d.field === 'optional1',
+    );
+    expect(optional1Details).toMatchObject({
+      value: 'ZZ00',
+      line: 0,
+      start: 15,
+      end: 19,
+    });
+  });
+
   it('Finland ID FIN-BO-12001 - valid', () => {
     // source: https://www.consilium.europa.eu/prado/en/FIN-BO-12001/index.html
     const MRZ = [
diff --git a/src/parse/td1Fields.ts b/src/parse/td1Fields.ts
index 19b954f..eb1a019 100644
--- a/src/parse/td1Fields.ts
+++ b/src/parse/td1Fields.ts
@@ -71,18 +71,7 @@ const fields: FieldOptions[] = [
     line: 0,
     start: 15,
     end: 30,
-    related: [
-      {
-        line: 0,
-        start: 5,
-        end: 14,
-      },
-      {
-        line: 0,
-        start: 14,
-        end: 15,
-      },
-    ],
+    related: [],
     parser: parseDocumentNumberOptional,
   },
   { ...birthDateTemplate, start: 0, end: 6, line: 1 },
diff --git a/src/parsers/parseDocumentNumberOptional.ts b/src/parsers/parseDocumentNumberOptional.ts
index 6762fc3..cc4805c 100644
--- a/src/parsers/parseDocumentNumberOptional.ts
+++ b/src/parsers/parseDocumentNumberOptional.ts
@@ -1,23 +1,10 @@
 import { parseText } from './parseText.ts';
 
-export function parseDocumentNumberOptional(
-  optional: string,
-  checkDigit: string,
-) {
-  if (checkDigit === '<') {
-    const firstFiller = optional.indexOf('<');
-    const value = parseText(optional.slice(firstFiller + 1), firstFiller + 1);
-    return {
-      value,
-      start: firstFiller + 1,
-      end: firstFiller + 1 + value.length,
-    };
-  } else {
-    const value = parseText(optional, 0);
-    return {
-      value,
-      start: 0,
-      end: value.length,
-    };
-  }
+export function parseDocumentNumberOptional(optional: string) {
+  const value = parseText(optional, 0);
+  return {
+    value,
+    start: 0,
+    end: value.length,
+  };
 }