Added repositories, made database unit-testable.

backend/tests/data/users.test.ts

@@ -0,0 +1,33 @@
+import {initializeTests} from "../testutils"
+import {Student} from "../../src/entities/users/student.entity";
+import {describe, it, expect, beforeAll} from "vitest";
+import {getRepository} from "../../src/orm";
+import {StudentRepository} from "../../src/data/users/student-repository";
+
+const username = "teststudent";
+const firstName = "John";
+const lastName = "Doe";
+describe("StudentRepository", () => {
+    let studentRepository: StudentRepository;
+
+    beforeAll(async () => {
+        await initializeTests()
+        studentRepository = getRepository(Student) as StudentRepository;
+    });
+
+    it("should return the queried student after he was added", async () => {
+        await studentRepository.insert(new Student(username, firstName, lastName));
+
+        let retrievedStudent = await studentRepository.findByUsername(username);
+        expect(retrievedStudent).toBeTruthy();
+        expect(retrievedStudent?.firstName).toBe(firstName);
+        expect(retrievedStudent?.lastName).toBe(lastName);
+    });
+
+    it("should no longer return the queried student after he was removed again", async () => {
+        await studentRepository.deleteByUsername(username);
+
+        let retrievedStudent = await studentRepository.findByUsername(username);
+        expect(retrievedStudent).toBeNull();
+    });
+});

backend/tests/example.test.ts

@@ -4,6 +4,6 @@ describe("Sample test", () => {
     it("should sum to 2", () => {
         const expected = 2;
         const result = 1 + 1;
-        expect(result).toBe(expected);
+        expect(result).equals(expected);
     });
 })

backend/tests/testutils.ts

@@ -0,0 +1,7 @@
+import {initORM} from "../src/orm";
+import dotenv from "dotenv";
+
+export async function initializeTests() {
+    dotenv.config({path: ".env.test"});
+    await initORM(true);
+}