# Test Client - `TestClient`

You can use the `TestClient` class to test FastAPI applications without creating an actual HTTP and socket connection, just communicating directly with the FastAPI code.

Read more about it in the [FastAPI docs for Testing](https://fastapi.tiangolo.com/tutorial/testing/).

You can import it directly from `fastapi.testclient`:

```python
from fastapi.testclient import TestClient
```

## Features

- A pool in decommission still allows READ access to all its contents, newer WRITEs will automatically be scheduled to only pools not in decommission status.
- All versioned buckets maintain the same order for "versions" for each object after being decommissioned to the other pools.
- A pool interrupted during the decommission process, such as for a cluster restart, resumes from where it left off.

 * limitations under the License.
 */
package okhttp3.internal.http2

import java.io.IOException

/** Thrown when an HTTP/2 stream is canceled without damage to the socket that carries it. */
class StreamResetException(
  @JvmField val errorCode: ErrorCode,

 * ```
 *
 * If any other extension or parameter is specified, then [unknownValues] will be true. Such
 * responses should be refused as their web socket extensions will not be understood.
 *
 * Note that [java.util.zip.Deflater] is hardcoded to use 15 bits (32 KiB) for
 * `client_max_window_bits` and [java.util.zip.Inflater] is hardcoded to use 15 bits (32 KiB) for

- Azure File CSI migration is now GA. ([#113160](https://github.com/kubernetes/kubernetes/pull/113160), [@andyzhangx](https://github.com/andyzhangx))
- Changed `preemption_victims` metric bucket from `LinearBuckets` to `ExponentialBuckets`. ([#112939](https://github.com/kubernetes/kubernetes/pull/112939), [@lengrongfu](https://github.com/lengrongfu))

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  }

  @Test
  fun connection() {
    val connection =
      object : Connection {
        override fun route(): Route = TODO()

        override fun socket(): Socket = TODO()

        override fun handshake(): Handshake? = TODO()

        override fun protocol(): Protocol = TODO()
      }
  }

  @Test
  fun connectionPool() {

        if (len > 0xFFFF) {
            throw new IOException("write too large: " + len);
        }
        if (off < 4) {
            throw new IOException("NetBIOS socket output buffer requires 4 bytes available before off");
        }

        off -= 4;

        b[off + 0] = (byte) SessionServicePacket.SESSION_MESSAGE;
        b[off + 1] = (byte) 0x00;

	public fun <init> (Ljava/lang/String;Lokhttp3/Headers;Ljava/util/List;JLokio/Buffer;ILjava/net/Socket;)V
	public fun <init> (Ljava/lang/String;Lokhttp3/Headers;Ljava/util/List;JLokio/Buffer;ILjava/net/Socket;Ljava/io/IOException;)V
	public synthetic fun <init> (Ljava/lang/String;Lokhttp3/Headers;Ljava/util/List;JLokio/Buffer;ILjava/net/Socket;Ljava/io/IOException;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
	public final fun getBody ()Lokio/Buffer;

import okhttp3.HttpUrl
import okio.ByteString

/** An HTTP request that came into the mock web server. */
public class RecordedRequest(
  /**
   * The index of the socket connection that carried this request. If two recorded requests share a
   * connection index, they also shared a socket connection.
   */
  public val connectionIndex: Int,
  /**
   * The index of this exchange on its HTTP connection. A request is uniquely identified by the