limiter.acquire(1); // R0.00, since it's the first request

    limiter.acquire(1); // R0.00, from capacity
    limiter.acquire(3); // R0.00, from capacity
    limiter.acquire(1); // R0.00, concluding a burst of 5 permits

    limiter.acquire(); // R0.20, capacity exhausted
    assertEvents(
        "U1.00", "U1.00", "R0.00", "R0.00", "R0.00", "R0.00", // first request and burst
        "R0.20");
  }

But then you have to call "that method that converts the first letter to upper case".

Was it `upper`? Was it `uppercase`? `first_uppercase`? `capitalize`?

Then, you try with the old programmer's friend, editor autocompletion.

You type the first parameter of the function, `first_name`, then a dot (`.`) and then hit `Ctrl+Space` to trigger the completion.

    void requestSecurityMode() {
        // Not enforced, server does not require -> enabled only
        Smb2NegotiateResponse first = mock(Smb2NegotiateResponse.class);
        when(first.isSigningRequired()).thenReturn(false);
        assertEquals(Smb2Constants.SMB2_NEGOTIATE_SIGNING_ENABLED, transport.getRequestSecurityMode(first));

        // Enforced -> required+enabled

   *
   * <p><b>Note:</b> this method is now unnecessary and should be treated as deprecated; use the
   * equivalent {@link Character#compare} method instead.
   *
   * @param a the first {@code char} to compare
   * @param b the second {@code char} to compare
   * @return a negative value if {@code a} is less than {@code b}; a positive value if {@code a} is
   *     greater than {@code b}; or zero if they are equal

		return nil, false
	}
	return selected, true
}

// firstFound returns the first found and the number of set entries.
func (m metaCacheEntries) firstFound() (first *metaCacheEntry, n int) {
	for i, entry := range m {
		if entry.name != "" {
			n++
			if first == nil {
				first = &m[i]
			}
		}
	}
	return first, n
}

// names will return all names in order.

MockWebServer for JUnit 5
=========================

This module integrates mockwebserver3.MockWebServer with JUnit 5.

To use, first add this library as a test dependency:

```
testImplementation("com.squareup.okhttp3:mockwebserver3-junit5:5.1.0")
```

Annotate fields in test classes with `@StartStop`. The server will be started and shut down
automatically.

```
class MyTest {

  @StartStop

    serverReaderWithCompression.processNextFrame()
    callback.assertTextMessage("Hello")
  }

  @Test fun serverWithCompressionCompressedHelloTwoChunks() {
    data.write("418460b420bb92fced72".decodeHex()) // first 4 bytes of compressed 'Hello'
    data.write("80833851d9d4f156d9".decodeHex()) // last 3 bytes of compressed 'Hello'
    serverReaderWithCompression.processNextFrame()
    callback.assertTextMessage("Hello")
  }

        byte[] buffer = new byte[52];

        // When
        int encoded = transformHeader.encode(buffer, 0);

        // Then
        assertEquals(52, encoded);

        // Verify protocol ID (first 4 bytes) - 0xFD534D42 in little-endian
        assertEquals((byte) 0x42, buffer[0]);
        assertEquals((byte) 0x4D, buffer[1]);
        assertEquals((byte) 0x53, buffer[2]);
        assertEquals((byte) 0xFD, buffer[3]);

  // The replacement array (see ArrayBasedEscaperMap).
  private final char[][] replacements;
  // The number of elements in the replacement array.
  private final int replacementsLength;
  // The first character in the safe range.
  private final char safeMin;
  // The last character in the safe range.
  private final char safeMax;

  /**

Using it in your editor is what really shows you the benefits of FastAPI, seeing how little code you have to write, all the type checks, autocompletion, etc.

---

## Install FastAPI { #install-fastapi }

The first step is to install FastAPI.

Make sure you create a [virtual environment](../virtual-environments.md){.internal-link target=_blank}, activate it, and then **install FastAPI**:

<div class="termy">

```console