old_contents: import pytest
  
  from pypeerassets.exceptions import UnsupportedNetwork
  from pypeerassets.networks import net_query
  
  
  def test_net_query():
      "Check that we can find NetworkParams for networks by name."
  
      # Use a network's long name
      net_params = net_query("peercoin")
      assert net_params.network_shortname == "ppc"
  
      # Use a network's short name
      net_params = net_query("tbtc")
      assert net_params.network_name == "bitcoin-testnet"
  
      # Try to find a network we don't know about.
      with pytest.raises(UnsupportedNetwork):
          net_query("not a network name we know")
  
new_contents: import pytest
  
  from pypeerassets.exceptions import UnsupportedNetwork
  from pypeerassets.networks import net_query
  
  
  def test_net_query():
      "Check that we can find NetworkParams for networks by name."
  
      # Use a network's long name
      net_params = net_query("peercoin")
      assert net_params.shortname == "ppc"
  
      # Use a network's short name
      net_params = net_query("tppc")
      assert net_params.name == "peercoin-testnet"
  
      # Try to find a network we don't know about.
      with pytest.raises(UnsupportedNetwork):
          net_query("not a network name we know of.")
  
subject: modify networks test.