### Pydantic v1 parameters { #pydantic-v1-parameters }

If you need to use some of the FastAPI-specific tools for parameters like `Body`, `Query`, `Form`, etc. with Pydantic v1 models, you can import them from `fastapi.temp_pydantic_v1_params` while you finish the migration to Pydantic v2:

{* ../../docs_src/pydantic_v1_in_v2/tutorial004_an_py310.py hl[4,18] *}

        .forwardOutput()
        /*
        This is a workaround to use `--no-daemon` with TestKit.
        Without this, daemon may keep writing to project dir after the test finishes, resulting in errors like:

        org.junit.platform.commons.JUnitException: Failed to close extension context
	        at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)

            startNextTask()
          }
        }
      }
    }
  }

  /**
   * This blocking queue hooks into a fake clock rather than using regular JVM timing for functions
   * like [poll]. It is only usable within task faker tasks.
   */
  private inner class TaskFakerBlockingQueue<T>(
    val delegate: BlockingQueue<T>,
  ) : AbstractQueue<T>(),
    BlockingQueue<T> {

      .build()
    assertThat(original.interceptors.size).isEqualTo(0)
    assertThat(original.networkInterceptors.size).isEqualTo(0)
  }

  /**
   * When copying the client, stateful things like the connection pool are shared across all
   * clients.
   */
  @Test fun cloneSharesStatefulInstances() {
    val client = clientTestRule.newClient()

    // Values should be non-null.

  private @Nullable ThreadFactory backingThreadFactory = null;

  /**
   * Creates a new {@link ThreadFactory} builder.
   *
   * <p><b>Java 21+ users:</b> use {@link Thread#ofPlatform()} instead, translating other calls on
   * the builder as documented on each method (except for the rarely used {@link #setThreadFactory},
   * which does not have an equivalent).
   */
  public ThreadFactoryBuilder() {}

  /**

//     backup space is needed for incremental backups. Larger block sizes also mean less performance for random read restore
//     methods like Instant Restore, File Level Recovery, and Database/Application restores. Veeam recommends that vendors
//     optimize the storage system for the default value of 1MB minus compression object sizes. The setting simultaneously

	}

	req, err := http.NewRequest(http.MethodPost, target.args.Endpoint.String(), bytes.NewReader(data))
	if err != nil {
		return err
	}

	// Verify if the authToken already contains
	// <Key> <Token> like format, if this is
	// already present we can blindly use the
	// authToken as is instead of adding 'Bearer'
	tokens := strings.Fields(target.args.AuthToken)
	switch len(tokens) {
	case 2:

    assertThat(letters).containsExactly("a", "b", "c").inOrder();
  }

  @J2ktIncompatible // Kotlin Native's regex is based on Apache Harmony, like old Android
  @GwtIncompatible // java.util.regex.Pattern
  @AndroidIncompatible // Bug in older versions of Android we test against, since fixed.
  public void testPatternSplitLookBehind() {

import java.util.List;
import java.util.regex.Pattern;
import junit.framework.TestCase;
import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;

/**
 * Unit test for {@link Doubles}.
 *
 * @author Kevin Bourrillion
 */
@NullMarked
@GwtCompatible
public class DoublesTest extends TestCase {
  private static final double[] EMPTY = {};
  private static final double[] ARRAY1 = {1.0};

 * multiple threads.
 *
 * <p>Popular escapers are defined as constants in classes like {@link
 * com.google.common.html.HtmlEscapers} and {@link com.google.common.xml.XmlEscapers}. To create
 * your own escapers extend this class and implement the {@link #escape(char)} method.
 *
 * @author Sven Mawson
 * @since 15.0
 */
@GwtCompatible