test(calc): Story 5.3/5.4 — variants.js node-testbar + Regressionstests (Juni-Faelle); Report-Splice als Paste-Artefakt verifiziert (kein Code-Bug)

variants.test.js

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+const { test } = require('node:test');
+const assert = require('node:assert');
+const { classify, variant1, variant2, variant3 } = require('./variants');
+
+const noHolidays = { isHoliday: () => false, isDayBeforeHoliday: () => false };
+const d = (s) => new Date(s + 'T12:00:00');
+
+test('classify: echte Wochentage', () => {
+  assert.strictEqual(classify(d('2026-06-12'), noHolidays), 'fr'); // Freitag
+  assert.strictEqual(classify(d('2026-06-13'), noHolidays), 'sa'); // Samstag
+  assert.strictEqual(classify(d('2026-06-14'), noHolidays), 'so'); // Sonntag
+  assert.strictEqual(classify(d('2026-06-10'), noHolidays), 'weekday'); // Mittwoch
+});
+
+test('classify: Feiertags-Verschiebung (Mo–Do)', () => {
+  const hp = { isHoliday: (x) => x.getDate() === 4, isDayBeforeHoliday: (x) => x.getDate() === 3 };
+  assert.strictEqual(classify(d('2026-06-04'), hp), 'so'); // Do-Feiertag → so
+  assert.strictEqual(classify(d('2026-06-03'), hp), 'fr'); // Tag davor → fr
+  const sandwich = { isHoliday: (x) => x.getDate() === 4, isDayBeforeHoliday: (x) => x.getDate() === 4 };
+  assert.strictEqual(classify(d('2026-06-04'), sandwich), 'sa'); // Sandwich → sa
+});
+
+test('Juni-Fall Jizdan: V3 gewinnt mit 500 €', () => {
+  const c = { fr: 2, sa: 0, so: 0, weekday: 2 };
+  assert.strictEqual(variant3(c, false).bonus, 500); // Pool 2 abgezogen, 2 Werktage × 250
+  assert.strictEqual(variant1(c, false).eligible, false); // Werktage 2 < 3
+  assert.strictEqual(variant2(c, false).eligible, false); // kein sa
+});
+
+test('Juni-Fall Giurgiu: V1=450, V2=700, V3=750 (Gewinner V3)', () => {
+  const c = { fr: 0, sa: 1, so: 1, weekday: 3 };
+  assert.strictEqual(variant1(c, false).bonus, 450);
+  assert.strictEqual(variant2(c, false).bonus, 700);
+  assert.strictEqual(variant3(c, false).bonus, 750);
+});
+
+test('Juni-Fall Günes: keine Variante greift → 0 €', () => {
+  const c = { fr: 0, sa: 1, so: 0, weekday: 0 };
+  assert.strictEqual(variant1(c, false).eligible, false);
+  assert.strictEqual(variant2(c, false).eligible, false);
+  assert.strictEqual(variant3(c, false).eligible, false);
+});
+
+test('Urlaubsmodus halbiert Schwellen: Günes mit Urlaub → V2 greift', () => {
+  const c = { fr: 0, sa: 0.5, so: 0, weekday: 1 };
+  // Urlaub: V2 Schwelle sa≥0.5 UND weekday≥1 → greift; Abzug 0.5 sa + 1 weekday → 0 bezahlt
+  assert.strictEqual(variant2(c, true).eligible, true);
+});