old_contents: import unittest
  from flask import current_app, url_for, get_flashed_messages
  from app import create_app, db
  from app.models import *
  
  
  class TestCreateAdmissionView(unittest.TestCase):
      def setUp(self):
          self.app = create_app('testing')
          self.app_context = self.app.app_context()
          self.app_context.push()
          db.create_all()
          self.client = self.app.test_client(use_cookies=True)
          self.valid_admission_form = {
              'id_lvrs_intern': 1,
          }
  
      def tearDown(self):
          db.session.remove()
          db.drop_all()
          self.app_context.pop()
  
      def test_duplicate_id_lvrs_intern(self):
          a = Admission(id_lvrs_intern=1)
          db.session.add(a)
          db.session.commit()
          data = {
              'id_lvrs_intern': 1,
              'samples-0-collection_date': '12/12/2012',
              'samples-0-admission_date': '13/12/2012',
          }
          duplicate_id_lvrs_intern = 'Número Interno já cadastrado!'
          response = self.client.post(
              url_for('main.create_admission'), data=data, follow_redirects=True)
          self.assertTrue(
              duplicate_id_lvrs_intern in response.get_data(as_text=True))
  
new_contents: import unittest
  from flask import current_app, url_for, get_flashed_messages
  from app import create_app, db
  from app.models import *
  
  
  class TestCreateAdmissionView(unittest.TestCase):
      def setUp(self):
          self.app = create_app('testing')
          self.app_context = self.app.app_context()
          self.app_context.push()
          db.create_all()
          self.client = self.app.test_client(use_cookies=True)
          self.valid_admission_form = {
              'id_lvrs_intern': 1,
          }
  
      def tearDown(self):
          db.session.remove()
          db.drop_all()
          self.app_context.pop()
  
      def test_duplicate_id_lvrs_intern(self):
          a = Admission(id_lvrs_intern=1)
          db.session.add(a)
          db.session.commit()
          data = {
              'id_lvrs_intern': '1',
              'samples-0-collection_date': '12/12/2012',
              'samples-0-admission_date': '13/12/2012',
          }
          duplicate_id_lvrs_intern = 'Número Interno já cadastrado!'
          response = self.client.post(
              url_for('main.create_admission'), data=data, follow_redirects=True)
          self.assertTrue(
              duplicate_id_lvrs_intern in response.get_data(as_text=True))
          self.assertTrue(
              len(Admission.query.filter_by(id_lvrs_intern='1').all()), 1)
  
subject: Change id_lvrs_internt to string. Test if there's only one created