test: class repository is getest

backend/tests/data/classes.test.ts

@@ -0,0 +1,34 @@
+import { beforeAll, describe, expect, it } from 'vitest';
+import { ClassRepository } from '../../src/data/classes/class-repository';
+import { setupTestApp } from '../setup-tests';
+import { getClassRepository } from '../../src/data/repositories';
+
+describe('ClassRepository', () => {
+    let ClassRepository: ClassRepository;
+
+    beforeAll(async () => {
+        await setupTestApp();
+        ClassRepository = getClassRepository();
+    });
+
+    it('should return nothing because id does not exist', async () => {
+        const classVar = await ClassRepository.findById('id');
+
+        expect(classVar).toBeNull();
+    });
+
+    it('should return requested class', async () => {
+        const classVar = await ClassRepository.findById('class_id01');
+
+        expect(classVar).toBeTruthy();
+        expect(classVar?.displayName).toBe('class01');
+    });
+
+    it('class should be gone after deletion', async () => {
+        await ClassRepository.deleteById('class_id01');
+
+        const classVar = await ClassRepository.findById('class_id01');
+
+        expect(classVar).toBeNull();
+    });
+});