style: fix linting issues met Prettier

backend/tests/test_assets/classes/classes.testdata.ts

@@ -5,7 +5,7 @@ import { Teacher } from '../../../src/entities/users/teacher.entity';
 
 export function makeTestClasses(em: EntityManager, students: Student[], teachers: Teacher[]): Class[] {
     const studentsClass01 = students.slice(0, 8);
-    const teacherClass01: Teacher[] = teachers.slice(4,5);
+    const teacherClass01: Teacher[] = teachers.slice(4, 5);
 
     const class01 = em.create(Class, {
         classId: '8764b861-90a6-42e5-9732-c0d9eb2f55f9',

backend/tests/test_assets/users/students.testdata.ts

@@ -12,7 +12,7 @@ export const TEST_STUDENTS = [
     // ⚠️ Deze mag niet gebruikt worden in elke test!
     { username: 'Nirvana', firstName: 'Kurt', lastName: 'Cobain' },
     // Makes sure when logged in as leerling1, there exists a corresponding user
-    { username: 'testleerling1', firstName: 'Gerald', lastName: 'Schmittinger'},
+    { username: 'testleerling1', firstName: 'Gerald', lastName: 'Schmittinger' },
 ];
 
 // 🏗️ Functie die ORM entities maakt uit de data array

backend/tests/test_assets/users/teachers.testdata.ts

@@ -31,7 +31,7 @@ export function makeTestTeachers(em: EntityManager): Teacher[] {
     const teacher05 = em.create(Teacher, {
         username: 'testleerkracht1',
         firstName: 'Bob',
-        lastName: 'Dylan'
+        lastName: 'Dylan',
     });
 
     return [teacher01, teacher02, teacher03, teacher04, teacher05];