import org.junit.jupiter.api.Nested;
import org.junit.jupiter.api.Test;
import org.mockito.Mockito;

/**
 * Tests for {@link WinError} interface constants and static arrays.
 * The interface has no instance methods, so the tests focus on
 * value correctness and array integrity.  A tiny Mockito example
 * demonstrates that the interface can be mocked if another class
 * depends on it.
 */
public class WinErrorTest {

    @Nested

import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Nested;
import org.junit.jupiter.api.Test;

/**
 * Unit tests for {@link SmbFileFilter}. The filter interface is small; the
 * tests focus on the contract that implementations should honour and the
 * interaction with {@link SmbFile} instances. The tests make heavy use of
 * Mockito to guarantee that implementation classes do not inadvertently
 * bypass the filter logic.

import jcifs.internal.NotifyResponse;
import jcifs.internal.smb1.trans.nt.NtTransNotifyChange;
import jcifs.internal.smb2.notify.Smb2ChangeNotifyRequest;

/**
 * Tests for SmbWatchHandleImpl focusing on behavior and interactions.
 */
@ExtendWith(MockitoExtension.class)
class SmbWatchHandleImplTest {

    @Mock
    SmbFileHandleImpl handle;

    @Mock
    SmbTreeHandleImpl tree;

 * an expressive source hint for the model problem. Instead, the source hint is configured by the model builder before
 * it delegates to other components that potentially encounter problems. Then, the problem reporter can focus on
 * providing a simple error message, leaving the donkey work of creating a nice model problem to this component.
 *
 */
public interface ModelProblemCollector {

    ProblemCollector<ModelProblem> getProblemCollector();

import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;

import org.junit.jupiter.api.Test;

/**
 * Security-focused test cases for BufferCache to verify buffer overflow protection.
 */
public class BufferCacheSecurityTest {

    /**
     * Test that buffer allocation validates size to prevent overflow.
     */
    @Test

import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;

import jcifs.Configuration;

/**
 * Tests for {@link SmbComSetInformationResponse}.
 *
 * Tests focus on the wire format methods which all return 0,
 * and the toString method implementation.
 */
@ExtendWith(MockitoExtension.class)
@DisplayName("SmbComSetInformationResponse tests")

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.mockito.Mockito;

import jcifs.CIFSContext;
import jcifs.Configuration;
import jcifs.Credentials;

/**
 * Security-focused test cases for SmbSessionImpl to verify race condition fixes.
 */
public class SmbSessionImplSecurityTest {

    private CIFSContext mockContext;
    private SmbTransportImpl mockTransport;

## First Steps { #first-steps }

Let's see a very simple example. It will be so simple that it is not very useful, for now.

But this way we can focus on how the **Dependency Injection** system works.

### Create a dependency, or "dependable" { #create-a-dependency-or-dependable }

Let's first focus on the dependency.

It is just a function that can take all the same parameters that a *path operation function* can take:

    void close_doesNothing() throws Exception {
        // Arrange
        SmbPipeOutputStream out = newStream();
        // constructor already calls handle.getPipe(); clear interactions to focus on close()
        clearInvocations(handle);

        // Act
        out.close();

        // Assert
        verifyNoInteractions(handle);
    }

    @Nested

/**
 * Unit tests for {@link TransWaitNamedPipeResponse}.
 *
 * The implementation contains only trivial methods that return {@code 0}
 * or construct a string representation.  The tests focus on:
 *
 * <ul>
 *   <li>happy‑path behaviour</li>
 *   <li>boundary arguments (e.g., negative indices, large values)</li>
 *   <li>string representation containing the class name</li>
 *   <li>null buffer handling</li>