// 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() {

    }

    @Test
    void testStreamReading() throws IOException {
        // Test stream reading functionality
        Path testFile = tempDir.resolve("test.txt");
        String content = "test content";
        Files.writeString(testFile, content);

        Source source = Sources.fromPath(testFile);
        try (InputStream inputStream = source.openStream()) {
            String readContent = new String(inputStream.readAllBytes());

		},
		{
			" \t\n Hello, Gophers \n\t\r\n",
			false,
			"Hello, Gophers",
		},
	}

	for _, testCase := range testCases {
		t.Run("", func(t *testing.T) {
			tmpfile, err := os.CreateTemp(t.TempDir(), "testfile")
			if err != nil {
				t.Error(err)
			}
			tmpfile.WriteString(testCase.content)
			tmpfile.Sync()
			tmpfile.Close()

			value, err := readFromSecret(tmpfile.Name())

    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);
    }

```go
s3Client, err := minio.New("localhost:9000", "YOUR-ACCESSKEYID", "YOUR-SECRETACCESSKEY", true)
if err != nil {
 log.Fatalln(err)
}

object, err := os.Open("my-testfile")
if err != nil {
 log.Fatalln(err)
}
defer object.Close()
objectStat, err := object.Stat()
if err != nil {
 log.Fatalln(err)
}

    // 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,