* expectedOldValue} with {@code newValue} and returns true; otherwise, this method returns false.
   *
   * <p>If {@code expectedOldValue} is zero, this method will succeed if {@code (key, zero)} is
   * currently in the map, or if {@code key} is not in the map at all.
   */
  boolean replace(K key, long expectedOldValue, long newValue) {
    if (expectedOldValue == 0L) {

		switch c := sn[i]; {
		case c < '0' || c > '9':
			return time.Time{}, ErrHeader
		case i < len(nanoDigits):
			nanoDigits[i] = c
		}
	}
	nsecs, _ := strconv.ParseInt(string(nanoDigits[:]), 10, 64) // Must succeed after validation
	if len(ss) > 0 && ss[0] == '-' {
		return time.Unix(secs, -1*nsecs), nil // Negative correction
	}
	return time.Unix(secs, nsecs), nil
}

        updateItem2.setNewInputs(new String[] { "p", "q" });
        updateItem2.setNewOutput("r");

        // First update should succeed
        charMappingFile.update(updateItem1);

        // Second update should fail due to mismatch
        try {
            charMappingFile.update(updateItem2);
            fail("Should throw DictionaryException");

		t.Fatalf("Failed to construct get-config object request - %v", err)
	}

	rec := httptest.NewRecorder()
	adminTestBed.router.ServeHTTP(rec, req)
	if rec.Code != http.StatusOK {
		t.Errorf("Expected to succeed but failed with %d", rec.Code)
	}

	results := madmin.InfoMessage{}
	err = json.NewDecoder(rec.Body).Decode(&results)
	if err != nil {
		t.Fatalf("Failed to decode set config result json %v", err)
	}

		etag, err := DecryptETag(test.ObjectKey, test.ObjectInfo)
		if err != nil && !test.ShouldFail {
			t.Fatalf("Test %d: should succeed but failed: %v", i, err)
		}
		if err == nil && test.ShouldFail {
			t.Fatalf("Test %d: should fail but succeeded", i)
		}
		if err == nil {
			if etag != test.ETag {
				t.Fatalf("Test %d: ETag mismatch: got %s - want %s", i, etag, test.ETag)
			}
		}
	}

    return whenAllComplete(asList(future1, moreFutures));
  }

  /**
   * Starts specifying how to combine {@link ClosingFuture}s into a single pipeline, assuming they
   * all succeed. If any fail, the resulting pipeline will fail.
   *
   * @throws IllegalStateException if a {@code ClosingFuture} has already been derived from any of

        // The code returns true on line 281 when signatures DON'T match
        boolean result = verifyDigest.verify(data, 0, data.length, 0, mockRequest);

        // The verification should succeed (return false) since we're using the same key
        assertFalse(result);
    }

    @Test
    @DisplayName("Test verify method with unsigned response")
    void testVerifyWithUnsignedResponse() {

        executor.shutdown();

        // Then - Verify results
        assertEquals(threadCount * operationsPerThread, successCount.get(), "All encryption operations should succeed");
        assertEquals(threadCount * operationsPerThread, encrypted.size(), "Should have encrypted results for each message");

            // Encode to different buffers
            int result1 = request.encode(buffer1, 0);
            int result2 = request.encode(buffer2, 50);

            // Both should succeed independently
            assertTrue(result1 > 0);
            assertTrue(result2 > 0);

            // Verify headers in both buffers
            for (int i = 0; i < 8; i++) {

        .getInputStream()
      fail<Any>()
    } catch (expected: IOException) {
    }
    server
      .url("/b")
      .toUrl()
      .openConnection()
      .getInputStream() // Should succeed.
  }

  /**
   * Throttle the request body by sleeping 500ms after every 3 bytes. With a 6-byte request, this
   * should yield one sleep for a total delay of 500ms.
   */
  @Test
  fun throttleRequest() {