text: import aiohttp.web
  import pytest
  
  from kopf.clients.fetching import read_crd, CRD_CRD
  
  
  async def test_when_present(
          resp_mocker, aresponses, hostname, resource):
  
      get_mock = resp_mocker(return_value=aiohttp.web.json_response({'a': 'b'}))
      aresponses.add(hostname, CRD_CRD.get_url(name=resource.name), 'get', get_mock)
  
      crd = await read_crd(resource=resource)
      assert crd == {'a': 'b'}
  
      assert get_mock.called
      assert get_mock.call_count == 1
  
  
  @pytest.mark.parametrize('status', [403, 404])
  async def test_when_absent_with_no_default(
          resp_mocker, aresponses, hostname, resource, status):
  
      get_mock = resp_mocker(return_value=aresponses.Response(status=status, reason="boo!"))
      aresponses.add(hostname, CRD_CRD.get_url(name=resource.name), 'get', get_mock)
  
      with pytest.raises(aiohttp.ClientResponseError) as e:
          await read_crd(resource=resource)
      assert e.value.status == status
  
  
  @pytest.mark.parametrize('default', [None, object()], ids=['none', 'object'])
  @pytest.mark.parametrize('status', [403, 404])
  async def test_when_absent_with_default(
          resp_mocker, aresponses, hostname, resource, default, status):
  
      get_mock = resp_mocker(return_value=aresponses.Response(status=status, reason="boo!"))
      aresponses.add(hostname, CRD_CRD.get_url(name=resource.name), 'get', get_mock)
  
      crd = await read_crd(resource=resource, default=default)
      assert crd is default
  
  
  @pytest.mark.parametrize('status', [400, 401, 500, 666])
  async def test_raises_api_error_despite_default(
          resp_mocker, aresponses, hostname, resource, status):
  
      get_mock = resp_mocker(return_value=aresponses.Response(status=status, reason="boo!"))
      aresponses.add(hostname, CRD_CRD.get_url(name=resource.name), 'get', get_mock)
  
      with pytest.raises(aiohttp.ClientResponseError) as e:
          await read_crd(resource=resource, default=object())
      assert e.value.status == status
  