when(mockAllocInfo.decode(any(byte[].class), anyInt(), anyInt())).thenReturn(42);

            // When
            int result = mockAllocInfo.decode(buffer, 10, 50);

            // Then
            assertEquals(42, result);
            verify(mockAllocInfo, times(1)).decode(buffer, 10, 50);
        }

        @Test

/**
 * Helper class for detecting and categorizing user agent types from HTTP requests.
 * This class analyzes the User-Agent header to determine which browser type is being used
 * and caches the result in the request attribute for performance optimization.
 *
 */
public class UserAgentHelper {

    /**
     * Default constructor for UserAgentHelper.
     */
    public UserAgentHelper() {

  }

  /**
   * Process the next protocol frame.
   *
   *  * If it is a control frame this will result in a single call to [FrameCallback].
   *  * If it is a message frame this will result in a single call to [FrameCallback.onReadMessage].
   *    If the message spans multiple frames, each interleaved control frame will result in a
   *    corresponding call to [FrameCallback].
   */
  @Throws(IOException::class)

<%@page pageEncoding="UTF-8" contentType="text/html; charset=UTF-8"%>
<%-- query did not match any document --%>
<div id="result" class="row">
	<div class="col-md-8 alert alert-info">
		<la:message key="labels.did_not_match" arg0="${displayQuery}" />
	</div>
	<div class="col-md-4"><%-- Side Content --%></div>

                super.close();
                counter[0]--;
              }
            };
          }
        };
    byte[] result = ByteSource.concat(checker, checker, checker).read();
    assertThat(result).hasLength(150);
  }

  private void joinHelper(Integer... spans) throws Exception {
    List<ByteSource> sources = new ArrayList<>();
    int start = 0;

                        if (file.exists()) {
                            results.add(file);
                        }
                    } catch (IOException e) {
                        log.debug("Error checking existence of: " + path, e);
                    }
                }
            }
        }
        
        return results;
    }
}
```

### 7.2 Hierarchical Cache Management
```java

                counter[0]--;
              }
            };
          }
        };
    Reader joinedReader = CharSource.concat(reader, reader, reader).openStream();
    String result = CharStreams.toString(joinedReader);
    assertEquals(testString.length() * 3, result.length());
  }

  public void testReady() throws Exception {
    CharSource source = newCharSource("a");
    Iterable<? extends CharSource> list = ImmutableList.of(source, source);

    ImmutableList<String> result = builder.build();

    /*
     * Maybe it rejects all elements, or maybe it adds "a" before failing.
     * Either way is fine with us.
     */
    if (result.isEmpty()) {
      return;
    }
    assertTrue(ImmutableList.of("a").equals(result));
    assertEquals(1, result.size());
  }

  public void testBuilderAddCollectionHandlesNulls() {

            byte[] buffer = new byte[1024];
            int result = request.readBytesWireFormat(buffer, 0);
            assertEquals(0, result);
        }

        @Test
        @DisplayName("Should return 0 regardless of buffer position")
        void testReadBytesWireFormatDifferentPosition() {
            byte[] buffer = new byte[1024];
            int result = request.readBytesWireFormat(buffer, 100);

        // Create custom result data
        ResultData customResult = new ResultData();
        customResult.setTransformerName("customName");
        transformer.setReturnedResultData(customResult);

        // Perform transform
        ResponseData responseData = new ResponseData();
        responseData.setUrl("http://example.com/test");

        ResultData result = transformer.transform(responseData);