message: API: Reword unauthorized teacher duplication tests
diff: @@ -174,7 +174,7 @@ describe('Duplicate', async () => {
  }
  });
  - it('should fail to duplicate units for an unauthorized teacher', async () => {
  + it('should forbid unit duplication for an unauthorized teacher', async () => {
  const unit = await FixtureUtils.getRandomUnit();
  const lecture = await FixtureUtils.getLectureFromUnit(unit);
  const course = await FixtureUtils.getCourseFromUnit(unit);
  @@ -192,7 +192,7 @@ describe('Duplicate', async () => {
  result.status.should.be.equal(403);
  });
  - it('should fail to duplicate lectures for an unauthorized teacher', async () => {
  + it('should forbid lecture duplication for an unauthorized teacher', async () => {
  const lecture = await FixtureUtils.getRandomLecture();
  const course = await FixtureUtils.getCourseFromLecture(lecture);
  const unauthorizedTeacher = await User.findOne({
  @@ -209,7 +209,7 @@ describe('Duplicate', async () => {
  result.status.should.be.equal(403);
  });
  - it('should fail to duplicate courses for an unauthorized teacher', async () => {
  + it('should forbid course duplication for an unauthorized teacher', async () => {
  const course = await FixtureUtils.getRandomCourse();
  const unauthorizedTeacher = await User.findOne({
  role: 'teacher',
  