message: API: Simplify lecture modification success test
diff: @@ -74,10 +74,7 @@ describe('Lecture', () => {
  lecture.description = 'Lecture modification unit test.';
  const res = await testHelper.commonUserPutRequest(admin, `/${lecture.id}`, lecture);
  res.status.should.be.equal(200);
  -
  - const resCheck = await testHelper.commonUserGetRequest(admin, `/${lecture.id}`);
  - resCheck.status.should.be.equal(200);
  - lectureShouldEqualRes(lecture, resCheck);
  + lectureShouldEqualRes(lecture, res);
  });
  it('should forbid lecture modification for an unauthorized teacher', async () => {
  