assertTrue(provider.isAvailable(), "Returned provider should be available");
    }

    @Test
    public void testCreateProviderTcp() {
        RdmaProvider provider = RdmaProviderFactory.createProvider("tcp");
        assertNotNull(provider, "TCP provider should always be available");
        assertTrue(provider.isAvailable(), "TCP provider should be available");

            return selectBestProvider();
        }

        switch (preference.toLowerCase()) {
        case "disni":
            RdmaProvider disniProvider = new DisniRdmaProvider();
            if (disniProvider.isAvailable()) {
                return disniProvider;
            }
            log.warn("DiSNI RDMA provider requested but not available");
            break;

        case "tcp":
            return new TcpRdmaProvider();

    return new DisniRdmaProvider().isAvailable() || 
           new JxioRdmaProvider().isAvailable();
}
```

## 7. Testing Strategy

### 7.1 Unit Tests
```java
@Test
public void testRdmaProviderSelection() {
    RdmaProvider provider = RdmaProviderFactory.createProvider("auto");
    assertNotNull(provider);
    assertTrue(provider.isAvailable());
}

@Test

        // Initialize without container
        emptyGenerator = new EmptyGenerator();

        // Test that isAvailable returns true for EmptyGenerator
        assertTrue(emptyGenerator.isAvailable());
        // Test cached availability
        assertTrue(emptyGenerator.isAvailable());
    }

    public void test_isTarget() {
        // Initialize without container
        emptyGenerator = new EmptyGenerator();

        // Test availability check
        assertTrue(thumbnailGenerator.isAvailable());
    }

    public void test_destroy() {
        // Test destroy method - should not throw exception
        thumbnailGenerator.destroy();
        // After destroy, generator should not be available
        assertFalse(thumbnailGenerator.isAvailable());
    }

    public void test_createTask_withValidParams() {

    /**
     * Creates a new TCP RDMA provider instance
     */
    public TcpRdmaProvider() {
        // Default constructor
    }

    @Override
    public boolean isAvailable() {
        return true; // TCP is always available
    }

    @Override
    public Set<RdmaCapability> getSupportedCapabilities() {
        // TCP fallback only supports send/receive

     */
    boolean isTarget(Map<String, Object> docMap);

    /**
     * Checks if this thumbnail generator is available for use.
     * @return True if available, false otherwise.
     */
    boolean isAvailable();

    /**
     * Destroys this thumbnail generator and releases any resources.
     */
    void destroy();

    /**
     * Creates a thumbnail generation task.

 */
public interface RdmaProvider {

    /**
     * Check if RDMA is available on this system
     *
     * @return true if RDMA can be used, false otherwise
     */
    boolean isAvailable();

    /**
     * Get supported RDMA capabilities
     *
     * @return set of capabilities supported by this provider
     */
    Set<RdmaCapability> getSupportedCapabilities();

    /**

    private Object endpointGroup; // RdmaActiveEndpointGroup<DisniRdmaEndpoint>
    private Object endpoint; // RdmaActiveEndpoint
    private boolean initialized = false;

    @Override
    public boolean isAvailable() {
        try {
            // Check if DiSNI is available on the classpath
            Class.forName("com.ibm.disni.RdmaActiveEndpointGroup");

            // Additional checks could include:

    private TcpRdmaProvider provider;

    @BeforeEach
    public void setUp() {
        provider = new TcpRdmaProvider();
    }

    @Test
    public void testIsAvailable() {
        assertTrue(provider.isAvailable(), "TCP provider should always be available");
    }

    @Test
    public void testGetSupportedCapabilities() {
        Set<RdmaCapability> capabilities = provider.getSupportedCapabilities();