assertEquals(0, response.writeParametersWireFormat(buffer, 0));
        assertEquals(0, response.writeDataWireFormat(buffer, 0));
    }

    @Test
    @DisplayName("All read methods should consistently return 0")
    void testAllReadMethodsReturnZero() {
        // Arrange
        byte[] buffer = new byte[100];

        // Act & Assert

            InputStream is = new ByteArrayInputStream("Hi".getBytes());
            byte[] buffer = new byte[10];

            Transport.readn(is, buffer, 0, 2); // Read all
            int bytesRead = Transport.readn(is, buffer, 0, 5); // Try to read more
            assertEquals(0, bytesRead);
        }
    }

    @Nested
    @DisplayName("Resource management tests")

# Advanced Middleware { #advanced-middleware }

In the main tutorial you read how to add [Custom Middleware](../tutorial/middleware.md) to your application.

And then you also read how to handle [CORS with the `CORSMiddleware`](../tutorial/cors.md).

In this section we'll see how to use other middlewares.

## Adding ASGI middlewares { #adding-asgi-middlewares }

    taskFaker.runTasks()
    assertThat(client.closed).isFalse()
    server.processNextFrame() // Read client closing, send server close.
    server.listener.assertClosing(1000, "Hello!")
    server.webSocket!!.finishReader()
    server.webSocket!!.close(1000, "Goodbye!")
    client.processNextFrame() // Read server closing, close connection.
    taskFaker.runTasks()
    client.listener.assertClosing(1000, "Goodbye!")

    /**
     * Read bytes from the input stream into a buffer
     *
     * @param in the input stream to read from
     * @param b the buffer to read into
     * @param off the offset in the buffer to start writing
     * @param len the number of bytes to read
     * @return number of bytes read
     * @throws IOException if an I/O error occurs
     */

        assertTrue(bytes >= 0);
    }

    @Test
    @DisplayName("Test read operations")
    void testReadOperations() {
        byte[] buffer = new byte[256];

        // Test parameter words read
        int paramResult = transaction.readParameterWordsWireFormat(buffer, 0);
        assertEquals(0, paramResult);

        // Test bytes read
        int bytesResult = transaction.readBytesWireFormat(buffer, 0);

      @Override
      public int read(CharBuffer cbuf) throws IOException {
        return reader.read(cbuf);
      }
    };
  }

  private static Reader getChunkedReader(String input, int chunk) {
    return new FilterReader(new StringReader(input)) {
      @Override
      public int read(char[] cbuf, int off, int len) throws IOException {
        return super.read(cbuf, off, min(chunk, len));
      }
    };

  var peek: String? = null

  while (true) {
    // Read a scheme name for this challenge if we don't have one already.
    if (peek == null) {
      skipCommasAndWhitespace()
      peek = readToken()
      if (peek == null) return
    }

    val schemeName = peek

    // Read a token68, a sequence of parameters, or nothing.
    val commaPrefixed = skipCommasAndWhitespace()

    * Hear when I make announcements or release new tools (although I use X (Twitter) more often 🤷‍♂).
* Read what I write (or follow me) on [**Dev.to**](https://dev.to/tiangolo) or [**Medium**](https://medium.com/@tiangolo).
    * Read other ideas, articles, and read about tools I have created.
    * Follow me to read when I publish something new.

## Tweet about **FastAPI** { #tweet-about-fastapi }

  public RandomAmountInputStream(InputStream in, Random random) {
    super(checkNotNull(in));
    this.random = checkNotNull(random);
  }

  @Override
  public int read(byte[] b, int off, int len) throws IOException {
    return super.read(b, off, random.nextInt(len) + 1);
  }