apple iap: existing products are compared with the config: localization name / description, reference name, review note (patched), family sharing (reported; on only), availability territories; all shown in the dry plan, one line each

tests/apple-iap-drift.test.ts

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+import { describe, expect, test } from 'bun:test';
+import { availabilityChange, iapAttributeChanges, iapLocalizationChanges } from '../cli/apple/iap';
+
+describe('iapLocalizationChanges', () => {
+  const store = [{ id: 'l1', locale: 'en-US', name: 'Coins', description: 'A pile of coins' }, { id: 'l2', locale: 'de-DE', name: 'Muenzen', description: 'Viele' }];
+  test('no difference means no change', () => {
+    expect(iapLocalizationChanges(store, [{ locale: 'en-US', name: 'Coins', description: 'A pile of coins' }])).toEqual([]);
+  });
+  test('only the changed attribute is patched', () => {
+    const r = iapLocalizationChanges(store, [{ locale: 'en-US', name: 'Coins', description: 'More coins' }]);
+    expect(r).toHaveLength(1);
+    expect(r[0]!.id).toBe('l1');
+    expect(r[0]!.attrs).toEqual({ description: 'More coins' });
+    expect(r[0]!.note).toBe('localization en-US: description "A pile of coins" -> "More coins"');
+  });
+  test('name and description, long text truncated, missing locales skipped', () => {
+    const long = 'x'.repeat(100);
+    const r = iapLocalizationChanges(store, [{ locale: 'de-DE', name: 'Gold', description: long }, { locale: 'fr-FR', name: 'a', description: 'b' }]);
+    expect(r).toHaveLength(1);
+    expect(r[0]!.attrs).toEqual({ name: 'Gold', description: long });
+    expect(r[0]!.note).toContain('name "Muenzen" -> "Gold"');
+    expect(r[0]!.note.length).toBeLessThan(120);
+  });
+});
+
+describe('iapAttributeChanges', () => {
+  test('equal attributes: nothing', () => {
+    const r = iapAttributeChanges({ name: 'com.example.coins', reviewNote: 'n', familySharable: false }, { name: 'com.example.coins', reviewNote: 'n', familySharable: false });
+    expect(r.patch).toEqual({});
+    expect(r.notes).toEqual([]);
+    expect(r.familyMismatch).toBeNull();
+  });
+  test('referenceName and reviewNote differ', () => {
+    const r = iapAttributeChanges({ name: 'Old', reviewNote: 'a' }, { name: 'New', reviewNote: 'b' });
+    expect(r.patch).toEqual({ name: 'New', reviewNote: 'b' });
+    expect(r.notes).toHaveLength(2);
+  });
+  test('reviewNote not set in the config is not compared', () => {
+    expect(iapAttributeChanges({ name: 'A', reviewNote: 'kept' }, { name: 'A' }).patch).toEqual({});
+  });
+  test('familySharable can be turned on, never off', () => {
+    expect(iapAttributeChanges({ name: 'A', familySharable: false }, { name: 'A', familySharable: true }).patch).toEqual({ familySharable: true });
+    const off = iapAttributeChanges({ name: 'A', familySharable: true }, { name: 'A', familySharable: false });
+    expect(off.patch).toEqual({});
+    expect(off.familyMismatch).toContain('familySharable');
+  });
+});
+
+describe('availabilityChange', () => {
+  const all = ['USA', 'DEU', 'FRA'];
+  test('complete availability with new territories: no change', () => {
+    expect(availabilityChange({ territories: ['USA', 'DEU', 'FRA', 'ITA'], newTerritories: true }, all)).toBeNull();
+  });
+  test('fewer territories', () => {
+    const r = availabilityChange({ territories: ['USA'], newTerritories: true }, all);
+    expect(r?.note).toBe('availability: 1 -> 3 territories');
+  });
+  test('new territories off', () => {
+    expect(availabilityChange({ territories: all, newTerritories: false }, all)?.note).toContain('new territories on');
+  });
+  test('no availability at all', () => {
+    expect(availabilityChange(null, all)).toMatchObject({ from: 0, to: 3 });
+  });
+});