- [Server Binaries](#server-binaries-6)
    - [Node Binaries](#node-binaries-6)
  - [Changelog since v1.12.3](#changelog-since-v1123)
    - [Action Required](#action-required)
    - [Other notable changes](#other-notable-changes-6)
- [v1.12.3](#v1123)
  - [Downloads for v1.12.3](#downloads-for-v1123)
    - [Client Binaries](#client-binaries-7)
    - [Server Binaries](#server-binaries-7)

        .testEquals();
  }

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester
  public void testForMapWithDefaultSerializable() {
    checkCanReserialize(Functions.forMap(ImmutableMap.of(1, 2), 3));
  }

  public void testForMapWithDefault_null() {
    ImmutableMap<String, Integer> map = ImmutableMap.of("One", 1);
    Function<String, @Nullable Integer> function = Functions.forMap(map, null);

        }
    }

    @Test
    @DisplayName("readn should handle partial reads")
    void testReadnPartial() throws IOException {
        byte[] buffer = new byte[10];
        byte[] data = { 1, 2, 3 };
        ByteArrayInputStream bais = new ByteArrayInputStream(data);

        int bytesRead = SessionServicePacket.readn(bais, buffer, 0, 5);

        assertEquals(3, bytesRead); // Only 3 bytes available
    }

    }

    /**
     * @throws Exception
     */
    @Test
    public void testToHex() throws Exception {
        assertEquals("010203", StringUtil.toHex(new byte[] { 1, 2, 3 }));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testToHex2() throws Exception {
        assertEquals("0001", StringUtil.toHex(1));
    }

    /**

        void testMinimumBufferSize() {
            // Given
            byte[] minBuffer = new byte[EXPECTED_SIZE];
            SrvCopychunk chunk = new SrvCopychunk(1, 2, 3);

            // When
            int bytesWritten = chunk.encode(minBuffer, 0);

            // Then
            assertEquals(EXPECTED_SIZE, bytesWritten);

	var wr = NewWriter(writerWithReadFromError{})
	if _, err := wr.ReadFrom(strings.NewReader("test2")); err == nil {
		t.Fatal("expected ReadFrom returns error, got nil")
	}
	if _, err := wr.Write([]byte("123")); err == nil {
		t.Fatal("expected Write returns error, got nil")
	}
}

type writeErrorOnlyWriter struct{}

func (w writeErrorOnlyWriter) Write(p []byte) (n int, err error) {

  }

  /**
   * Returns a string containing the supplied {@code int} values separated by {@code separator}. For
   * example, {@code join("-", 1, 2, 3)} returns the string {@code "1-2-3"}.
   *
   * @param separator the text that should appear between consecutive values in the resulting string
   *     (but not at the start or end)

    SetMultimap<String, Integer> multimap = create();
    multimap.putAll("bar", asList(3, 1, 2));
    multimap.putAll("foo", asList(2, 3, 1, -1, 4));
    assertThat(multimap.toString()).isEqualTo("{bar=[1, 2, 3], foo=[-1, 1, 2, 3, 4]}");
  }

  public void testOrderedGet() {
    TreeMultimap<String, Integer> multimap = createPopulate();
    assertThat(multimap.get("foo")).containsExactly(1, 3, 7).inOrder();

            // Act
            int decodedSize = context.decode(buffer, 0, buffer.length);

            // Assert
            assertEquals(8, decodedSize);
            assertArrayEquals(new int[] { 1, 2, 3 }, context.getCiphers());
        }

        @Test
        @DisplayName("Should handle empty cipher array in decode")
        void testDecodeEmptyCipherArray() throws SMBProtocolDecodingException {

## `yield` を使った `StreamingResponse` { #a-streamingresponse-with-yield }

path operation 関数で `response_class=StreamingResponse` を宣言すると、`yield` を使ってデータをチャンクごとに順次送信できます。

{* ../../docs_src/stream_data/tutorial001_py310.py ln[1:23] hl[20,23] *}

FastAPI は各データチャンクをそのまま `StreamingResponse` に渡し、JSON などに変換しようとはしません。

### 非 async な path operation 関数 { #non-async-path-operation-functions }

`async` なしの通常の `def` 関数でも同様に `yield` を使えます。