})
    void testToStringWithDifferentLevels(int infoLevel, String expectedHex) {
        trans2QueryFSInfo = new Trans2QueryFSInformation(config, infoLevel);

        String result = trans2QueryFSInfo.toString();

        assertNotNull(result);
        assertTrue(result.contains("Trans2QueryFSInformation"));
        assertTrue(result.toLowerCase().contains(expectedHex.toLowerCase()));
    }

    @Test

		inputReaderData string
		inputMd5        string
		inputSHA256     string
		inputDataSize   int64
		// flag indicating whether the test should pass.
		shouldPass bool
		// expected error output.
		expectedMd5   string
		expectedError error
	}{
		// Test case  1-4.
		// Cases with invalid bucket name.
		{bucketName: ".test", objName: "obj", PartID: 1, expectedError: fmt.Errorf("%s", "Bucket name invalid: .test")},