old_contents: import pytest
  from rest_framework import status
  from rest_framework.reverse import reverse
  from rest_framework.test import APIClient
  
  
  def test_posting_valid_data_returns_utm_zones(mocker, api_client, utm_zone_post_url, payload):
      expected_srid = 123456
      utm_zone_mock = mocker.Mock()
      utm_zone_mock.srid = expected_srid
      mocker.patch('utm_zone_info.viewsets.utm_zones_for_representing', return_value=[utm_zone_mock])
      post_viewset_result = api_client.post(utm_zone_post_url, payload, format='json')
      expected_result = {'utm_zone_srids': [expected_srid]}
      assert post_viewset_result.status_code == status.HTTP_200_OK
      assert post_viewset_result.data == expected_result
  
  
  def test_posting_invalid_data_returns_error(api_client, utm_zone_post_url, invalid_payload):
      post_viewset_result = api_client.post(utm_zone_post_url, invalid_payload, format='json')
      assert post_viewset_result.status_code == status.HTTP_400_BAD_REQUEST
  
  
  _valid_geoJSON = {
      "type": "Polygon",
      "coordinates": [
          [
              [100.0, 0.0], [101.0, 0.0], [101.0, 1.0], [100.0, 1.0], [100.0, 0.0]
          ]
      ]
  }
  
  
  @pytest.fixture(params=[
      dict(),
      dict(geom=''),
      dict(srid=None),
      dict(geom=None, srid=None),
      dict(geom='', srid=None),
      dict(geom=None, srid=''),
      dict(geom='', srid=4326),
      dict(geom=_valid_geoJSON, srid=''),
      dict(geom={key: value for key, value in _valid_geoJSON.items() if key != 'type'}, srid=4326),
      dict(geom={key: value for key, value in _valid_geoJSON.items() if key != 'coordinates'}, srid=4326),
  ])
  def invalid_payload(request):
      return request.param
  
  
  @pytest.fixture(params=[
      dict(geom=_valid_geoJSON, srid=4326)
  ])
  def payload(request):
      return request.param
  
  
  @pytest.fixture
  def api_client():
      return APIClient(enforce_csrf_checks=True)
  
  
  @pytest.fixture
  def utm_zone_post_url():
      return reverse('utm_zone_info:utm_zone_info-list')
  
new_contents: import pytest
  from rest_framework import status
  from rest_framework.reverse import reverse
  from rest_framework.test import APIClient
  
  
  def test_posting_valid_data_returns_utm_zones(mocker, api_client, utm_zone_post_url, payload):
      utm_zone_srid = 123456
      utm_zone_mock = mocker.Mock()
      utm_zone_mock.srid = utm_zone_srid
      mocker.patch('utm_zone_info.viewsets.utm_zones_for_representing', return_value=[utm_zone_mock])
      post_viewset_result = api_client.post(utm_zone_post_url, payload, format='json')
      expected_result = {'utm_zone_srids': [utm_zone_srid]}
      assert post_viewset_result.status_code == status.HTTP_200_OK
      assert post_viewset_result.data == expected_result
  
  
  def test_posting_invalid_data_returns_error(api_client, utm_zone_post_url, invalid_payload):
      post_viewset_result = api_client.post(utm_zone_post_url, invalid_payload, format='json')
      assert post_viewset_result.status_code == status.HTTP_400_BAD_REQUEST
  
  
  _valid_geoJSON = {
      "type": "Polygon",
      "coordinates": [
          [
              [100.0, 0.0], [101.0, 0.0], [101.0, 1.0], [100.0, 1.0], [100.0, 0.0]
          ]
      ]
  }
  
  
  @pytest.fixture(params=[
      dict(),
      dict(geom=''),
      dict(srid=None),
      dict(geom=None, srid=None),
      dict(geom='', srid=None),
      dict(geom=None, srid=''),
      dict(geom='', srid=4326),
      dict(geom=_valid_geoJSON, srid=''),
      dict(geom={key: value for key, value in _valid_geoJSON.items() if key != 'type'}, srid=4326),
      dict(geom={key: value for key, value in _valid_geoJSON.items() if key != 'coordinates'}, srid=4326),
  ])
  def invalid_payload(request):
      return request.param
  
  
  @pytest.fixture(params=[
      dict(geom=_valid_geoJSON, srid=4326)
  ])
  def payload(request):
      return request.param
  
  
  @pytest.fixture
  def api_client():
      return APIClient(enforce_csrf_checks=True)
  
  
  @pytest.fixture
  def utm_zone_post_url():
      return reverse('utm_zone_info:utm_zone_info-list')
  
subject: rename local variable for UTM zone mock SRID