old_contents: import pytest
  
  from cartoframes.viz import Source
  from cartoframes.lib.context.api_context import APIContext
  from cartoframes.auth import Credentials
  
  from .utils import simple_dataframe
  
  
  def setup_mocks(mocker):
      mocker.patch.object(Source, 'get_geom_type', return_value='point')
      mocker.patch.object(Source, '_compute_query_bounds')
      mocker.patch.object(APIContext, 'get_schema', return_value='public')
  
  
  class TestSource(object):
      def test_is_source_defined(self):
          """Source"""
          assert Source is not None
  
      def test_source_get_credentials_username(self, mocker):
          """Source should return the correct credentials when username is provided"""
          setup_mocks(mocker)
          source = Source('faketable', credentials=Credentials(
              username='fakeuser', api_key='1234'))
  
          credentials = source.get_credentials()
  
          assert credentials['username'] == 'fakeuser'
          assert credentials['api_key'] == '1234'
          assert credentials['base_url'] == 'https://fakeuser.carto.com'
  
      def test_source_get_credentials_base_url(self, mocker):
          """Source should return the correct credentials when base_url is provided"""
          setup_mocks(mocker)
          source = Source('faketable', credentials=Credentials(
              base_url='https://fakeuser.carto.com'))
  
          credentials = source.get_credentials()
  
          assert credentials['username'] == 'user'
          assert credentials['api_key'] == 'default_public'
          assert credentials['base_url'] == 'https://fakeuser.carto.com'
  
      def test_source_no_credentials(self, mocker):
          """Source should raise an exception if there are no credentials"""
          with pytest.raises(AttributeError) as e:
              Source('faketable')
  
          assert str(e.value) == ('Credentials attribute is required. '
                                  'Please pass a `Credentials` instance or use '
                                  'the `set_default_credentials` function.')
  
      def test_source_not_change_dataframe(self, mocker):
          """Source should return the correct credentials when username is provided"""
          df = simple_dataframe()
          source = Source(df.copy())
  
          assert str(df) == str(source.dataset.dataframe)
  
new_contents: import pytest
  
  from cartoframes.viz import Source
  from cartoframes.lib.context.api_context import APIContext
  from cartoframes.auth import Credentials
  
  from .utils import simple_dataframe
  
  
  def setup_mocks(mocker):
      mocker.patch.object(Source, 'get_geom_type', return_value='point')
      mocker.patch.object(Source, '_compute_query_bounds')
      mocker.patch.object(APIContext, 'get_schema', return_value='public')
  
  
  class TestSource(object):
      def test_is_source_defined(self):
          """Source"""
          assert Source is not None
  
      def test_source_get_credentials_username(self, mocker):
          """Source should return the correct credentials when username is provided"""
          setup_mocks(mocker)
          source = Source('faketable', credentials=Credentials(
              username='fakeuser', api_key='1234'))
  
          credentials = source.get_credentials()
  
          assert credentials['username'] == 'fakeuser'
          assert credentials['api_key'] == '1234'
          assert credentials['base_url'] == 'https://fakeuser.carto.com'
  
      def test_source_get_credentials_base_url(self, mocker):
          """Source should return the correct credentials when base_url is provided"""
          setup_mocks(mocker)
          source = Source('faketable', credentials=Credentials(
              base_url='https://fakeuser.carto.com'))
  
          credentials = source.get_credentials()
  
          assert credentials['username'] == 'user'
          assert credentials['api_key'] == 'default_public'
          assert credentials['base_url'] == 'https://fakeuser.carto.com'
  
      def test_source_no_credentials(self):
          """Source should raise an exception if there are no credentials"""
          with pytest.raises(AttributeError) as e:
              Source('faketable')
  
          assert str(e.value) == ('Credentials attribute is required. '
                                  'Please pass a `Credentials` instance or use '
                                  'the `set_default_credentials` function.')
  
      def test_source_not_change_dataframe(self):
          """Source should return the correct credentials when username is provided"""
          df = simple_dataframe()
          source = Source(df.copy())
  
          assert str(df) == str(source.dataset.dataframe)
  
subject: Remove unused mocker param in tests