byte[] data4 = { 0x00, 0x11, 0x22, 0x33, 0x44 };
        assertEquals("00", Hexdump.toHexString(data4, 1, 2)); // Bug: ignores srcIndex, reads from 0
        assertEquals("0011", Hexdump.toHexString(data4, 1, 4)); // Bug: ignores srcIndex, reads from 0
        assertEquals("0011", Hexdump.toHexString(data4, 2, 4)); // Bug: ignores srcIndex, reads from 0
    }

    @Test

        // Test basic patterns that should be valid
        String[] potentiallyValidCrons = { "0 0 * * * ?", // Every hour
                "0 */15 * * * ?", // Every 15 minutes
                "0 0 12 * * ?", // Daily at noon
                "0 15 10 ? * MON-FRI" // Weekdays at 10:15
        };

        // Test each pattern and see what actually works
        for (String cron : potentiallyValidCrons) {

        assertEquals(5120, stats.getBytesTransferred(), "Should have transferred 5KB total");
        assertEquals(1, stats.getOperationErrors(), "Should have 1 error");
        assertEquals(0.25, stats.getErrorRate(), 0.001, "Error rate should be 25% (1 error out of 4 successful operations)");

        // Verify latency calculations
        assertTrue(stats.getAverageReadLatencyMicros() > 0, "Read latency should be positive");

            double percentUsed = ((fileFsSizeInfo.getCapacity() - fileFsSizeInfo.getFree()) * 100.0) / fileFsSizeInfo.getCapacity();

            // Then
            assertEquals(25.0, percentFree, 0.001);
            assertEquals(75.0, percentUsed, 0.001);
        }
    }

            // When - calculate percentage free
            double percentFree = (allocInfo.getFree() * 100.0) / allocInfo.getCapacity();

            // Then
            assertEquals(25.0, percentFree, 0.001);
        }

        @Test
        @DisplayName("Should support available space check pattern")
        void shouldSupportAvailableSpaceCheckPattern() {
            // Given

                    ((fileFsFullSizeInfo.getCapacity() - fileFsFullSizeInfo.getFree()) * 100.0) / fileFsFullSizeInfo.getCapacity();

            // Then
            assertEquals(25.0, percentFree, 0.001);
            assertEquals(75.0, percentUsed, 0.001);
        }

        @Test
        @DisplayName("Should differentiate between caller available and actual free units")

            uuid.time_low = 0x12345678;
            uuid.time_mid = (short) 0x9ABC;
            uuid.time_hi_and_version = (short) 0xDEF0;
            uuid.clock_seq_hi_and_reserved = (byte) 0x11;
            uuid.clock_seq_low = (byte) 0x22;
            uuid.node = new byte[] { (byte) 0xAA, (byte) 0xBB, (byte) 0xCC, (byte) 0xDD, (byte) 0xEE, (byte) 0xFF };

                "xxx:aaa");

        byte[] customData = new byte[8];
        customData[0] = 0x01;
        customData[1] = 0x02;

        byte[] machineId = new byte[32];
        machineId[0] = 0x10;
        machineId[1] = 0x11;
        machineId[2] = 0x12;

        AvSingleHost avSingleHost = new AvSingleHost(customData, machineId);

        assertNotNull(avSingleHost);
        byte[] value = avSingleHost.getRaw();

/*
 * Copyright (C) 2011 The Guava Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,