void testUnlockFlag() {
            assertEquals(0x4, Smb2Lock.SMB2_LOCKFLAG_UNLOCK);
        }

        @Test
        @DisplayName("Should have correct fail immediately flag value")
        void testFailImmediatelyFlag() {
            assertEquals(0x10, Smb2Lock.SMB2_LOCKFLAG_FAIL_IMMEDIATELY);
        }

        @Test
        @DisplayName("Should allow flag combinations")

  // Views

  /**
   * Returns the set of distinct elements contained in this multiset. The element set is backed by
   * the same data as the multiset, so any change to either is immediately reflected in the other.
   * The order of the elements in the element set is unspecified.
   *
   * <p>If the element set supports any removal operations, these necessarily cause <b>all</b>

	if flag == syscall.O_RDONLY {
		// https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-lockfileex
		//lint:ignore SA4016 Reasons
		lockType = lockFileFailImmediately // Set this to enable shared lock and fail immediately.
	}
	return lockedOpenFile(path, flag, perm, lockType)
}

// LockedOpenFile - initializes a new lock and protects
// the file from concurrent access.

        // Make the cache entry expired
        DirectoryCacheEntry entry = directoryLeaseManager.getCacheEntry(directoryPath);
        entry.setMaxAge(1); // 1ms to expire immediately
        try {
            Thread.sleep(10);
        } catch (InterruptedException e) {
            // Ignore
        }

        // When lease is lost, cache entry should be removed

        assertSame(parent, it.getParent());
        verify(tree, times(1)).acquire();
    }

    @Test
    @DisplayName("Constructor with open() returning null closes immediately and hasNext=false")
    void constructorOpenNullCloses() throws Exception {
        // Arrange
        stubAcquireReturnsSelf();
        List<FileEntry[]> pages = List.of(new FileEntry[][] { new FileEntry[] {} });

   * For example, the cache may evict an entry because it hasn't been used recently or very often.
   *
   * <p>If {@code maximumSize} is zero, elements will be evicted immediately after being loaded into
   * cache. This can be useful in testing, or to disable caching temporarily.
   *
   * <p>This feature cannot be used in conjunction with {@link #maximumWeight}.
   *

        // Verify disconnect was called on retry
        verify(c, atLeastOnce()).disconnect(eq(true));
    }

    @Test
    @DisplayName("send honors NO_RETRY and propagates error immediately")
    void send_noRetry_param() throws Exception {
        SmbTreeConnection c = newConn();
        SmbTreeImpl tree = mock(SmbTreeImpl.class);
        when(tree.acquire(false)).thenReturn(tree);

    // Should we pepper more of these calls throughout the above? Where?
    CacheTesting.checkValidState(cache);
  }

  /**
   * Tests that when a single entry exceeds the segment's max weight, the new entry is immediately
   * evicted and nothing else.
   */
  public void testEviction_maxWeight_entryTooBig() {
    CountingRemovalListener<Integer, Integer> removalListener = countingRemovalListener();

    }

    @Test
    @DisplayName("Null resourceLoc is accepted but may cause issues later")
    void constructorNullResourceLoc() {
        // Null resourceLoc doesn't throw NPE immediately - it's stored and may cause issues when used
        // This test documents the current behavior
        SmbTreeConnection freshConnection = mock(SmbTreeConnection.class);

		// return error only for context timedout.
		if errors.Is(ctx.Err(), context.DeadlineExceeded) {
			return ctx.Err()
		}
		return nil
	default:
		// log channel is full, do not wait and return
		// an error immediately to the caller
		atomic.AddInt64(&h.totalMessages, 1)
		atomic.AddInt64(&h.failedMessages, 1)
		return errors.New("log buffer full")
	}
	return nil
}