refactoring, numbering plan

tests/unit/exhibit-naming.spec.ts

@@ -0,0 +1,83 @@
+import { expect, test } from '@playwright/test';
+import {
+	DEFAULT_EXHIBIT_PREFIX,
+	MAX_EXHIBIT_PREFIX_LENGTH,
+	MAX_EXHIBIT_START_NUMBER,
+	MIN_EXHIBIT_START_NUMBER,
+	buildExhibitFileName,
+	buildExhibitLabel,
+	buildExhibitPrefixSlug,
+	getExhibitNumberWidth,
+	normalizeExhibitPrefix,
+	normalizeExhibitStartNumber
+} from '../../src/lib/exhibit-naming';
+
+test('the prefix is trimmed and capped', () => {
+	expect(normalizeExhibitPrefix('  Anlage K  ')).toBe('Anlage K');
+	expect(normalizeExhibitPrefix('')).toBe('');
+	expect(normalizeExhibitPrefix('A'.repeat(MAX_EXHIBIT_PREFIX_LENGTH + 10))).toHaveLength(
+		MAX_EXHIBIT_PREFIX_LENGTH
+	);
+});
+
+test('labels use one space and never pad the number', () => {
+	expect(buildExhibitLabel('Anlage K', 6)).toBe('Anlage K 6');
+	expect(buildExhibitLabel('  Anlage  ', 1)).toBe('Anlage 1');
+	expect(buildExhibitLabel('Anlage', 98)).toBe('Anlage 98');
+});
+
+test('the padding width follows the highest assigned number', () => {
+	expect(getExhibitNumberWidth(9)).toBe(2);
+	expect(getExhibitNumberWidth(99)).toBe(2);
+	expect(getExhibitNumberWidth(100)).toBe(3);
+	expect(getExhibitNumberWidth(1000)).toBe(4);
+});
+
+test('file names prefix the number and keep the original base name', () => {
+	expect(
+		buildExhibitFileName({
+			prefix: 'Anlage K',
+			number: 6,
+			highestNumber: 8,
+			originalName: 'Klageschrift.pdf'
+		})
+	).toBe('Anlage_K_06_Klageschrift.pdf');
+
+	expect(
+		buildExhibitFileName({
+			prefix: 'Anlage K',
+			number: 98,
+			highestNumber: 100,
+			originalName: 'Anlage.PDF'
+		})
+	).toBe('Anlage_K_098_Anlage.pdf');
+});
+
+test('unsafe characters never reach the file name', () => {
+	expect(
+		buildExhibitFileName({
+			prefix: 'Anlage K/1',
+			number: 1,
+			highestNumber: 1,
+			originalName: 'a:b*c?.pdf'
+		})
+	).toBe('Anlage_K1_01_abc.pdf');
+});
+
+test('an empty prefix falls back to the default slug', () => {
+	expect(buildExhibitPrefixSlug('   ')).toBe(DEFAULT_EXHIBIT_PREFIX);
+	expect(
+		buildExhibitFileName({ prefix: '', number: 3, highestNumber: 3, originalName: 'x.pdf' })
+	).toBe('Anlage_03_x.pdf');
+});
+
+test('the start number is clamped and survives an empty field', () => {
+	expect(normalizeExhibitStartNumber(1)).toBe(1);
+	expect(normalizeExhibitStartNumber(0)).toBe(MIN_EXHIBIT_START_NUMBER);
+	expect(normalizeExhibitStartNumber(-5)).toBe(MIN_EXHIBIT_START_NUMBER);
+	expect(normalizeExhibitStartNumber(6.6)).toBe(7);
+	expect(normalizeExhibitStartNumber(undefined)).toBe(1);
+	expect(normalizeExhibitStartNumber(null)).toBe(1);
+	expect(normalizeExhibitStartNumber('')).toBe(1);
+	expect(normalizeExhibitStartNumber(1_000_000)).toBe(MAX_EXHIBIT_START_NUMBER);
+});