}

  /**
   * Returns the {@link Method} instance for {@link #testPut_nullKeyUnsupported()} so that tests of
   * {@link java.util.TreeMap} can suppress it with {@code
   * FeatureSpecificTestSuiteBuilder.suppressing()} until <a
   * href="https://bugs.openjdk.org/browse/JDK-5045147">JDK-5045147</a> is fixed.
   */
  @J2ktIncompatible
  @GwtIncompatible // reflection
  public static Method getPutNullKeyUnsupportedMethod() {

  }

  @J2ktIncompatible
  @GwtIncompatible // reflection
  public static Method getSpliteratorNotImmutableCollectionAllowsAddMethod() {
    return getMethod(
        CollectionSpliteratorTester.class, "testSpliteratorNotImmutable_collectionAllowsAdd");
  }

  @J2ktIncompatible
  @GwtIncompatible // reflection
  public static Method getSpliteratorNotImmutableCollectionAllowsRemoveMethod() {
    return getMethod(

  }

  /**
   * Returns the {@link HashCode} based on the data written to this stream. The result is
   * unspecified if this method is called more than once on the same instance.
   */
  public HashCode hash() {
    return hasher.hash();
  }

  // Overriding close() because FilterOutputStream's close() method pre-JDK8 has bad behavior:
  // it silently ignores any exception thrown by flush(). Instead, just close the delegate stream.

@DisplayName("Credentials Interface Tests")
class CredentialsTest extends BaseTest {

    @Mock
    private Credentials mockCredentials;

    @Test
    @DisplayName("Should define interface methods")
    void testCredentialsInterface() {
        // Verify interface methods exist
        assertDoesNotThrow(() -> {
            mockCredentials.unwrap(Credentials.class);
            mockCredentials.getUserDomain();
            mockCredentials.isAnonymous();

import static java.lang.annotation.ElementType.ANNOTATION_TYPE;
import static java.lang.annotation.ElementType.CONSTRUCTOR;
import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.CLASS;

import com.google.common.annotations.GwtCompatible;
import java.lang.annotation.Retention;

import static java.lang.annotation.ElementType.ANNOTATION_TYPE;
import static java.lang.annotation.ElementType.CONSTRUCTOR;
import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.CLASS;

import com.google.common.annotations.GwtCompatible;
import java.lang.annotation.Retention;

- ✅ Null input stream validation

---

### 4. AbstractExtractorTest.java
**Purpose**: Test the base AbstractExtractor functionality.

**Key Test Areas**:
- `validateInputStream()` method behavior
- Exception types and messages
- Stream consumption (should not consume)
- Consistency across multiple calls

**Test Count**: 11 tests

**Key Scenarios**:
- ✅ Validates non-null streams

@DisplayName("CIFSContext Tests")
class CIFSContextTest extends BaseTest {

    @Mock
    private CIFSContext mockContext;

    @Test
    @DisplayName("Should define interface methods")
    void testCIFSContextInterface() {
        // Verify interface methods exist
        assertDoesNotThrow(() -> {
            mockContext.get("smb://server/share");
            mockContext.getPipe("smb://server/share/pipe", 0);
            mockContext.close();

 */
@DisplayName("Decodable Interface Tests")
class DecodableTest extends BaseTest {

    @Mock
    private Decodable mockDecodable;

    @Test
    @DisplayName("Should define decode method")
    void testDecodeMethod() throws SMBProtocolDecodingException {
        // Given
        byte[] buffer = new byte[10];
        int bufferIndex = 0;
        int len = 10;

    @Mock
    private SamrPolicyHandle policyHandle;

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
    }

    /**
     * Test method for
     * {@link jcifs.dcerpc.msrpc.MsrpcSamrConnect4#MsrpcSamrConnect4(java.lang.String, int, jcifs.dcerpc.msrpc.SamrPolicyHandle)}.
     */
    @Test
    void testMsrpcSamrConnect4() {
        // Given