// Initialize CharMappingFile
        charMappingFile = new CharMappingFile("test_id", testFile.getAbsolutePath(), new Date());
        charMappingFile.manager(dictionaryManager);
    }

    @Override
    protected void tearDown(TestInfo testInfo) throws Exception {
        if (testFile != null && testFile.exists()) {
            testFile.delete();
        }
        super.tearDown(testInfo);
    }

                }
            }

            @Override
            public void store(org.codelibs.fess.dict.DictionaryFile<?> file, File tempFile) {
                // Copy tempFile to testFile
                try {
                    java.nio.file.Files.copy(tempFile.toPath(), testFile.toPath(), java.nio.file.StandardCopyOption.REPLACE_EXISTING);
                } catch (IOException e) {
                    throw new RuntimeException(e);

                }
            }

            @Override
            public void store(DictionaryFile<?> file, File tempFile) {
                // Copy tempFile to testFile
                try {
                    java.nio.file.Files.copy(tempFile.toPath(), testFile.toPath(), java.nio.file.StandardCopyOption.REPLACE_EXISTING);
                } catch (IOException e) {
                    throw new RuntimeException(e);

        System.setProperty("fess.var.path", varDir.toString());
        final File testFile = new File(varDir.toFile(), "data/test.txt");
        testFile.getParentFile().mkdirs();
        testFile.createNewFile();

        // Should not throw
        action.validateFilePath(testFile.getAbsolutePath());
    }

    @Test
    public void test_validateFilePath_pathOutsideVarPath() {

    WritableByteChannel outChannel = Channels.newChannel(out);

    File testFile = createTempFile();
    byte[] dummyData = newPreFilledByteArray(chunkSize);
    try (FileOutputStream fos = new FileOutputStream(testFile)) {
      for (int i = 0; i < 500; i++) {
        fos.write(dummyData);
      }
    }
    try (ReadableByteChannel inChannel = new RandomAccessFile(testFile, "r").getChannel()) {
      ByteStreams.copy(inChannel, outChannel);
    }

    WritableByteChannel outChannel = Channels.newChannel(out);

    File testFile = createTempFile();
    byte[] dummyData = newPreFilledByteArray(chunkSize);
    try (FileOutputStream fos = new FileOutputStream(testFile)) {
      for (int i = 0; i < 500; i++) {
        fos.write(dummyData);
      }
    }
    try (ReadableByteChannel inChannel = new RandomAccessFile(testFile, "r").getChannel()) {
      ByteStreams.copy(inChannel, outChannel);
    }

    // Test FilePurgeVisitor
    @Test
    public void test_FilePurgeVisitor() throws IOException {
        // Create a test file
        File testFile = new File(tempDir, "_1/_2/test.png");
        testFile.getParentFile().mkdirs();
        testFile.createNewFile();
        testFile.setLastModified(System.currentTimeMillis() - 2000L);

        // Since FilePurgeVisitor is an inner class and we can't directly test it,

}

func TestFileReader(t *testing.T) {
	type (
		testRead struct { // Read(cnt) == (wantStr, wantErr)
			cnt     int
			wantStr string
			wantErr error
		}
		testWriteTo struct { // WriteTo(testFile{ops}) == (wantCnt, wantErr)
			ops     fileOps
			wantCnt int64
			wantErr error
		}
		testRemaining struct { // logicalRemaining() == wantLCnt, physicalRemaining() == wantPCnt
			wantLCnt int64

          for (Map.Entry<String, GistFile> entry : gist.files.entrySet()) {
            System.out.println(entry.getKey());
            System.out.println(entry.getValue().content);
          }
        }
      }

      static class Gist {
        Map<String, GistFile> files;
      }

      static class GistFile {
        String content;
      }
    ```

        tempFile = File.createTempFile("test", ".tmp", Curl.tmpDir);
        Files.write(tempFile.toPath(), "Hello, World!".getBytes());
        assertTrue(tempFile.exists());

        ContentCache cache = new ContentCache(tempFile);

        // Close should delete the file
        cache.close();

        assertFalse(tempFile.exists());
    }

    @Test