}

    @Test
    public void testIsInMemory_WithFile() throws IOException {
        // ## Arrange ##
        File tmpFile = File.createTempFile("cache-test-", ".tmp");
        tmpFile.deleteOnExit();
        ContentCache cache = new ContentCache(tmpFile);

        // ## Assert ##
        assertFalse(cache.isInMemory());
    }

    // --- getContentAsBytes() tests ---

    @Test

                    logger.debug("Deleted temp file: path={}", propFile.getAbsolutePath());
                }
                systemProperties.reload(propFile.getAbsolutePath());
                propFile.deleteOnExit();
            } catch (final Exception e) {
                logger.warn("Failed to create system properties file.", e);
            }
        }

        int totalCount = 0;
        int count = 1;

                    logger.debug("Deleted temp file: path={}", propFile.getAbsolutePath());
                }
                systemProperties.reload(propFile.getAbsolutePath());
                propFile.deleteOnExit();
            } catch (final Exception e) {
                logger.warn("Failed to create system properties file.", e);
            }
        }

        // ## Arrange ##
        String content = "File-based content test";
        java.io.File tmpFile = java.io.File.createTempFile("response-test-", ".tmp");
        tmpFile.deleteOnExit();
        java.nio.file.Files.write(tmpFile.toPath(), content.getBytes(java.nio.charset.StandardCharsets.UTF_8));

        CurlResponse response = new CurlResponse();
        response.setEncoding("UTF-8");

        final File propFile = File.createTempFile("project", ".properties");
        propFile.deleteOnExit();
        FileUtil.writeBytes(propFile.getAbsolutePath(), "fess.version=98.76.5".getBytes());
        final File desginJspRootFile = File.createTempFile("jsp", "");
        desginJspRootFile.delete();
        desginJspRootFile.deleteOnExit();
        systemHelper = new SystemHelper() {
            @Override

                    logger.debug("Deleted temp file: path={}", propFile.getAbsolutePath());
                }
                systemProperties.reload(propFile.getAbsolutePath());
                propFile.deleteOnExit();
            } catch (final Exception e) {
                logger.warn("Failed to create system properties file.", e);
            }
        }

        try {