fix(core): Handle empty keys in cache service (no-changelog) (#6854)

* fix handle empty keys in cache service

* add test

* add cache mock test

* add simpler mocking, and add tests for all the updated methods

* don't use RedisStore specifically in the mock

---------

Co-authored-by: कारतोफ्फेलस्क्रिप्ट™ <aditya@netroy.in>

packages/cli/test/unit/services/cache-mock.service.test.ts

@@ -0,0 +1,67 @@
+import Container from 'typedi';
+import { mock } from 'jest-mock-extended';
+import { CacheService } from '@/services/cache.service';
+
+const cacheService = Container.get(CacheService);
+const store = mock<NonNullable<CacheService['cache']>['store']>({ isCacheable: () => true });
+Object.assign(cacheService, { cache: { store } });
+
+describe('CacheService (Mock)', () => {
+	beforeEach(() => jest.clearAllMocks());
+
+	describe('should prevent use of empty keys', () => {
+		test('get', async () => {
+			await cacheService.get('');
+			expect(store.get).not.toHaveBeenCalled();
+
+			await cacheService.get('key');
+			expect(store.get).toHaveBeenCalledWith('key');
+		});
+
+		test('getMany', async () => {
+			await cacheService.getMany([]);
+			expect(store.mget).not.toHaveBeenCalled();
+
+			await cacheService.getMany(['key1', 'key2']);
+			expect(store.mget).toHaveBeenCalledWith('key1', 'key2');
+		});
+
+		test('set', async () => {
+			await cacheService.set('', '');
+			expect(store.set).not.toHaveBeenCalled();
+
+			await cacheService.set('key', 'value');
+			expect(store.set).toHaveBeenCalledWith('key', 'value', undefined);
+
+			await cacheService.set('key', 'value', 123);
+			expect(store.set).toHaveBeenCalledWith('key', 'value', 123);
+		});
+
+		test('setMany', async () => {
+			await cacheService.setMany([]);
+			expect(store.mset).not.toHaveBeenCalled();
+
+			await cacheService.setMany([['key', 'value']]);
+			expect(store.mset).toHaveBeenCalledWith([['key', 'value']], undefined);
+
+			await cacheService.setMany([['key', 'value']], 123);
+			expect(store.mset).toHaveBeenCalledWith([['key', 'value']], 123);
+		});
+
+		test('delete', async () => {
+			await cacheService.delete('');
+			expect(store.del).not.toHaveBeenCalled();
+
+			await cacheService.delete('key');
+			expect(store.del).toHaveBeenCalledWith('key');
+		});
+
+		test('deleteMany', async () => {
+			await cacheService.deleteMany([]);
+			expect(store.mdel).not.toHaveBeenCalled();
+
+			await cacheService.deleteMany(['key1', 'key2']);
+			expect(store.mdel).toHaveBeenCalledWith('key1', 'key2');
+		});
+	});
+});