public void putEdge_doesntAllowSelfLoops() {
    assume().that(graphIsMutable()).isTrue();
    assume().that(graph.allowsSelfLoops()).isFalse();

    IllegalArgumentException e =
        assertThrows(IllegalArgumentException.class, () -> putEdge(N1, N1));
    assertThat(e).hasMessageThat().contains(ERROR_SELF_LOOP);
  }

  @Test
  public void putEdge_allowsSelfLoops() {
    assume().that(graphIsMutable()).isTrue();

  public void putEdge_doesntAllowSelfLoops() {
    assume().that(graphIsMutable()).isTrue();
    assume().that(graph.allowsSelfLoops()).isFalse();

    IllegalArgumentException e =
        assertThrows(IllegalArgumentException.class, () -> putEdge(N1, N1));
    assertThat(e).hasMessageThat().contains(ERROR_SELF_LOOP);
  }

  @Test
  public void putEdge_allowsSelfLoops() {
    assume().that(graphIsMutable()).isTrue();

///

### Create the `Settings` object

Import `BaseSettings` from Pydantic and create a sub-class, very much like with a Pydantic model.

The same way as with Pydantic models, you declare class attributes with type annotations, and possibly default values.

You can use all the same validation features and tools you use for Pydantic models, like different data types and additional validations with `Field()`.

//// tab | Pydantic v2

    assertThat(e).hasMessageThat().contains(ERROR_REUSE_EDGE);
  }

  @Test
  public void addEdge_parallelSelfLoopEdge_notAllowed() {
    assume().that(graphIsMutable()).isTrue();
    assume().that(network.allowsSelfLoops()).isTrue();
    assume().that(network.allowsParallelEdges()).isFalse();

    addEdge(N1, N1, E11);
    IllegalArgumentException e =
        assertThrows(

      rem This piece of magic somehow checks that an argument is a number
      for /F "delims=0123456789" %%i in ("%~2") do (
        set var="%%i"
      )
      if defined var (
        rem Not a number, assume no argument given and default to 9999
        set JPDA_PORT=9999
      ) else (
        rem Port was given, shift arguments
        set JPDA_PORT=%~2
        shift
      )
    ) else (

	// healthcheck port, just like we used to. Otherwise, we can't assume it's local-node privileged traffic, and will capture and process it normally.
	//
	// All this is necessary because quite often apps use the same port for healthchecks as they do for reg. traffic, and
	// we cannot make assumptions there.

						return nil, setupType,
							config.ErrInvalidErasureEndpoints(nil).Msg(fmt.Sprintf("same path '%s' can not be served by different port on same address", endpoint.Path))
					}
					pathIPMap[endpoint.Path] = IPSet.Union(hostIPSet)
				} else {
					pathIPMap[endpoint.Path] = hostIPSet
				}
			}
		}

		// Check whether same path is used for more than 1 local endpoints.
		{

			// we ignore errors here as we don't want this event to be retried by the queue.
		} else {
			// If oldpod != ready && newpod != ready, but the ambient annotation was added,
			// then assume this event was generated by the CNI plugin labeling the pod on startup,
			// and skip the event.
			//
			// This isn't perfect (someone could manually annotate an unready pod,

        String testFifoPipe = getProperties().get(TestProperties.TEST_FIFO_PIPE);
        Assume.assumeNotNull(testFifoPipe);
        return "smb://" + getTestServer() + "/IPC$/" + testFifoPipe;
    }


    private String getTransactPipeUrl () {
        String testTransactPipe = getProperties().get(TestProperties.TEST_TRANSACT_PIPE);
        Assume.assumeNotNull(testTransactPipe);

import static org.junit.Assert.assertTrue;

import java.net.URI;
import java.net.URISyntaxException;
import java.util.Collection;
import java.util.Locale;
import java.util.Map;

import org.junit.Assume;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;
import org.slf4j.Logger;