content: import pytest
  from unittest.mock import (
      Mock,
      patch,
  )
  
  from requests import (
      Session,
  )
  from requests.adapters import (
      HTTPAdapter,
  )
  
  from web3 import (
      Web3,
      __version__ as web3py_version,
  )
  from web3.eth import (
      Eth,
  )
  from web3.exceptions import (
      ProviderConnectionError,
      Web3RPCError,
  )
  from web3.geth import (
      Geth,
      GethAdmin,
      GethTxPool,
  )
  from web3.middleware import (
      AttributeDictMiddleware,
      BufferedGasEstimateMiddleware,
      ENSNameToAddressMiddleware,
      GasPriceStrategyMiddleware,
      ValidationMiddleware,
  )
  from web3.net import (
      Net,
  )
  from web3.providers import (
      HTTPProvider,
  )
  
  URI = "http://mynode.local:8545"
  
  
  def test_no_args():
      provider = HTTPProvider()
      w3 = Web3(provider)
      assert w3.manager.provider == provider
      assert not w3.manager.provider.is_async
      assert not w3.is_connected()
      with pytest.raises(ProviderConnectionError):
          w3.is_connected(show_traceback=True)
  
  
  def test_init_kwargs():
      provider = HTTPProvider(endpoint_uri=URI, request_kwargs={"timeout": 60})
      w3 = Web3(provider)
      assert w3.manager.provider == provider
  
  
  def test_web3_with_http_provider_has_default_middleware_and_modules() -> None:
      adapter = HTTPAdapter(pool_connections=20, pool_maxsize=20)
      session = Session()
      session.mount("http://", adapter)
      session.mount("https://", adapter)
  
      provider = HTTPProvider(endpoint_uri=URI, session=session)
      w3 = Web3(provider)
  
      # assert default modules
      assert isinstance(w3.eth, Eth)
      assert isinstance(w3.net, Net)
      assert isinstance(w3.geth, Geth)
      assert isinstance(w3.geth.admin, GethAdmin)
      assert isinstance(w3.geth.txpool, GethTxPool)
  
      # assert default middleware
  
      # the following length check should fail and will need to be added to once more
      # middleware are added to the defaults
      assert len(w3.middleware_onion.middleware) == 5
  
      assert w3.middleware_onion.get("gas_price_strategy") == GasPriceStrategyMiddleware
      assert w3.middleware_onion.get("ens_name_to_address") == ENSNameToAddressMiddleware
      assert w3.middleware_onion.get("attrdict") == AttributeDictMiddleware
      assert w3.middleware_onion.get("validation") == ValidationMiddleware
      assert w3.middleware_onion.get("gas_estimate") == BufferedGasEstimateMiddleware
  
  
  def test_user_provided_session():
      adapter = HTTPAdapter(pool_connections=20, pool_maxsize=20)
      session = Session()
      session.mount("http://", adapter)
      session.mount("https://", adapter)
  
      provider = HTTPProvider(endpoint_uri=URI, session=session)
      session = provider._request_session_manager.cache_and_return_session(URI)
      w3 = Web3(provider)
      assert w3.manager.provider == provider
  
      adapter = session.get_adapter(URI)
      assert isinstance(adapter, HTTPAdapter)
      assert adapter._pool_connections == 20
      assert adapter._pool_maxsize == 20
  
  
  @pytest.mark.parametrize("provider", (HTTPProvider(), HTTPProvider))
  def test_get_request_headers(provider):
      headers = provider.get_request_headers()
      assert len(headers) == 2
      assert headers["Content-Type"] == "application/json"
      assert (
          headers["User-Agent"] == f"web3.py/{web3py_version}/"
          f"{HTTPProvider.__module__}.{HTTPProvider.__qualname__}"
      )
  
  
  @patch(
      "web3._utils.http_session_manager.HTTPSessionManager.make_post_request",
      new_callable=Mock,
  )
  def test_http_empty_batch_response(mock_post):
      mock_post.return_value = (
          b'{"jsonrpc":"2.0","id":null,"error":{"code":-32600,"message":"empty batch"}}'
      )
      w3 = Web3(HTTPProvider())
      with w3.batch_requests() as batch:
          assert w3.provider._is_batching
          with pytest.raises(Web3RPCError, match="empty batch"):
              batch.execute()
  
      # assert that even though there was an error, we have reset the batching state
      assert not w3.provider._is_batching
  