}
  }

  @Test
  fun singlePart() {
    val expected =
      """
      |--123
      |
      |Hello, World!
      |--123--
      |
      """.trimMargin().replace("\n", "\r\n")
    val body =
      MultipartBody
        .Builder("123")
        .addPart("Hello, World!".toRequestBody(null))
        .build()
    assertThat(body.boundary).isEqualTo("123")

    serverWriter.writeMessageFrame(OPCODE_TEXT, "Hello".encodeUtf8())
    assertData("810548656c6c6f")
  }

  @Test fun serverCompressedTextMessage() {
    val serverWriter =
      WebSocketWriter(
        false,
        data,
        random,
        true,
        false,
        0L,
      )
    serverWriter.writeMessageFrame(OPCODE_TEXT, "Hello".encodeUtf8())
    assertData("c107f248cdc9c90700")
  }

    }

    public void test_encodeUrl_already_encoded() {
        assertEquals("hello", DocumentUtil.encodeUrl("hello"));
        assertEquals("hello-world", DocumentUtil.encodeUrl("hello-world"));
        assertEquals("hello_world", DocumentUtil.encodeUrl("hello_world"));
        assertEquals("hello.world", DocumentUtil.encodeUrl("hello.world"));
    }

    public void test_encodeUrl_empty_and_null() {

        ranges = data.ranges,
        mappings = data.mappings,
      )
  }

  @Test fun regularMappings() {
    assertThat("hello".map()).isEqualTo("hello")
    assertThat("hello-world".map()).isEqualTo("hello-world")
    assertThat("HELLO".map()).isEqualTo("hello")
    assertThat("Hello".map()).isEqualTo("hello")

    // These compound characters map their its components.
    assertThat("¼".map()).isEqualTo("1⁄4")

$ export MY_NAME="Wade Wilson"

// 然後，你可以在其他程式中使用它，例如
$ echo "Hello $MY_NAME"

Hello Wade Wilson
```

</div>

////

//// tab | Windows PowerShell

<div class="termy">

```console
// 建立一個名為 MY_NAME 的環境變數
$ $Env:MY_NAME = "Wade Wilson"

// 在其他程式中使用它，例如
$ echo "Hello $Env:MY_NAME"

Hello Wade Wilson
```

</div>

////

## 在 Python 中讀取環境變數

// Затем её можно использовать в других программах, например
$ echo "Hello $MY_NAME"

Hello Wade Wilson
```

</div>

////

//// tab | Windows PowerShell

<div class="termy">

```console
// Создайте переменную окружения MY_NAME
$ $Env:MY_NAME = "Wade Wilson"

// Используйте её с другими программами, например
$ echo "Hello $Env:MY_NAME"

Hello Wade Wilson
```

</div>

////

    )
    val response = client.newCall(request().build()).execute()
    val responseBody = response.body
    assertThat(responseBody.string(), "Expected response body to be valid")
      .isEqualTo("Hello, Hello, Hello")
    responseBody.close()
    networkLogs
      .assertLogEqual("--> GET $url http/1.1")
      .assertLogEqual("Host: $host")
      .assertLogEqual("Connection: Keep-Alive")

    public void tearDown() {
        if (tempFile != null && tempFile.exists()) {
            tempFile.delete();
        }
    }

    @Test
    public void testMemoryBasedCacheConstructor() {
        byte[] data = "Hello, World!".getBytes();
        ContentCache cache = new ContentCache(data);

        assertNotNull(cache);
    }

    @Test
    public void testFileBasedCacheConstructor() throws IOException {

    assertHash(679745764, murmur3_32().hashUnencodedChars("k"));
    assertHash(1510782915, murmur3_32().hashUnencodedChars("hell"));
    assertHash(-675079799, murmur3_32().hashUnencodedChars("hello"));
    assertHash(1935035788, murmur3_32().hashUnencodedChars("http://www.google.com/"));
    assertHash(
        -528633700, murmur3_32().hashUnencodedChars("The quick brown fox jumps over the lazy dog"));
  }

```txt
Hello, World from Flask!
```

Y si vas a <a href="http://localhost:8000/v2" class="external-link" target="_blank">http://localhost:8000/v2</a> verás el response de FastAPI:

```JSON
{
    "message": "Hello World"
}