assertEquals(230, WinError.ERROR_BAD_PIPE, "ERROR_BAD_PIPE expected 230");
            assertEquals(6118, WinError.ERROR_NO_BROWSER_SERVERS_FOUND, "ERROR_NO_BROWSER_SERVERS_FOUND expected 6118");
        }
    }

    @Nested
    @DisplayName("Array content checks")
    class ArrayChecks {
        @Test
        void arraysHaveSameLength() {

    /** The service is not installed */
    int ERROR_SERVICE_NOT_INSTALLED = 2184;
    /** The list of servers for this workgroup is not currently available */
    int ERROR_NO_BROWSER_SERVERS_FOUND = 6118;

    /** Array of Windows error codes */
    int[] WINERR_CODES = { ERROR_SUCCESS, ERROR_ACCESS_DENIED, ERROR_REQ_NOT_ACCEP, ERROR_BAD_PIPE, ERROR_PIPE_BUSY, ERROR_NO_DATA,

    int ERROR_PIPE_NOT_CONNECTED = 233;
    /** More data is available */
    int ERROR_MORE_DATA = 234;
    /** The list of servers for this workgroup is not currently available */
    int ERROR_NO_BROWSER_SERVERS_FOUND = 6118;

    /** Array of Windows error codes */
    int[] WINERR_CODES = { ERROR_SUCCESS, ERROR_ACCESS_DENIED, ERROR_REQ_NOT_ACCEP, ERROR_BAD_PIPE, ERROR_PIPE_BUSY, ERROR_NO_DATA,

                () -> assertEquals(2184, WinError.ERROR_SERVICE_NOT_INSTALLED),
                () -> assertEquals(6118, WinError.ERROR_NO_BROWSER_SERVERS_FOUND));
    }

    @Test
    @DisplayName("Arrays: non-null, same length, and exact contents")
    void arrays_are_well_formed_and_match() {

        assertEquals(12, parsedStats.length); // 12 bytes total for stats
        // The stats array in NodeStatusResponse contains everything after names
        // MAC is at index 0-5, actual stats at 6-11
        byte[] expectedStats = new byte[12];
        System.arraycopy(testMac, 0, expectedStats, 0, 6); // MAC at beginning
        System.arraycopy(stats, 0, expectedStats, 6, 6); // Stats after MAC

- [CHANGELOG-1.22.md](./CHANGELOG-1.22.md)
- [CHANGELOG-1.21.md](./CHANGELOG-1.21.md)
- [CHANGELOG-1.20.md](./CHANGELOG-1.20.md)
- [CHANGELOG-1.19.md](./CHANGELOG-1.19.md)
- [CHANGELOG-1.18.md](./CHANGELOG-1.18.md)
- [CHANGELOG-1.17.md](./CHANGELOG-1.17.md)
- [CHANGELOG-1.16.md](./CHANGELOG-1.16.md)
- [CHANGELOG-1.15.md](./CHANGELOG-1.15.md)
- [CHANGELOG-1.14.md](./CHANGELOG-1.14.md)

					Signature: [4]byte{6, 1, 1, 1},
					Type:      ObjectType,
					Flags:     0,
				}},
			},
		},
		7: {
			versions: []xlMetaV2ShallowVersion{
				{header: xlMetaV2VersionHeader{
					VersionID: [16]byte{},
					ModTime:   baseTime.Add(90 * time.Minute).UnixNano(),
					Signature: [4]byte{6, 1, 1, 1},
					Type:      ObjectType,
					Flags:     0,
				}},

        D = FF(D, A, B, C, X[1], 7);
        C = FF(C, D, A, B, X[2], 11);
        B = FF(B, C, D, A, X[3], 19);
        A = FF(A, B, C, D, X[4], 3);
        D = FF(D, A, B, C, X[5], 7);
        C = FF(C, D, A, B, X[6], 11);
        B = FF(B, C, D, A, X[7], 19);
        A = FF(A, B, C, D, X[8], 3);
        D = FF(D, A, B, C, X[9], 7);
        C = FF(C, D, A, B, X[10], 11);
        B = FF(B, C, D, A, X[11], 19);

    assertEquals("123", Strings.lenientFormat("%s%s%s", 1, 2, 3));
    assertEquals("1%s%s", Strings.lenientFormat("%s%s%s", 1));
    assertEquals("5 + 6 = 11", Strings.lenientFormat("%s + 6 = 11", 5));
    assertEquals("5 + 6 = 11", Strings.lenientFormat("5 + %s = 11", 6));
    assertEquals("5 + 6 = 11", Strings.lenientFormat("5 + 6 = %s", 11));

If an exception occurs, the`Request` instance will still be in scope, so we can read and make use of the request body when handling the error:

{* ../../docs_src/custom_request_and_route/tutorial002.py hl[16:18] *}

## Custom `APIRoute` class in a router { #custom-apiroute-class-in-a-router }

You can also set the `route_class` parameter of an `APIRouter`:

{* ../../docs_src/custom_request_and_route/tutorial003.py hl[26] *}