from fastapi.testclient import TestClient


class Session:
    def __init__(self) -> None:
        self.data = ["foo", "bar", "baz"]
        self.open = True

    def __iter__(self) -> Generator[str, None, None]:
        for item in self.data:
            if self.open:
                yield item
            else:
                raise ValueError("Session closed")


@contextmanager

     *
     * @see jcifs.SmbPipeHandle#isStale()
     */
    @Override
    public boolean isStale() {
        return !this.open || this.handle != null && !this.handle.isValid();
    }

    @Override
    public synchronized SmbFileHandleImpl ensureOpen() throws CIFSException {
        if (!this.open) {
            throw new SmbException("Pipe handle already closed");
        }

        if (!isOpen()) {

// This implementation doesn't support all the open
// flags and shouldn't be considered as replacement
// for os.OpenFile().
func LockedOpenFile(path string, flag int, perm os.FileMode) (*LockedFile, error) {
	return lockedOpenFile(path, flag, perm, syscall.F_SETLKW)
}

// Open - Call os.OpenFile
func Open(path string, flag int, perm os.FileMode) (*os.File, error) {

// the file from concurrent access across mount points.
// This implementation doesn't support all the open
// flags and shouldn't be considered as replacement
// for os.OpenFile().
func LockedOpenFile(path string, flag int, perm os.FileMode) (*LockedFile, error) {
	return lockedOpenFile(path, flag, perm, 0)
}

// Open - Call os.OpenFile
func Open(path string, flag int, perm os.FileMode) (*os.File, error) {
	return os.OpenFile(path, flag, perm)

 * endpoint) or <i>closed</i> (includes the endpoint) on that side. With three possibilities on each
 * side, this yields nine basic types of ranges, enumerated below. (Notation: a square bracket
 * ({@code [ ]}) indicates that the range is closed on that side; a parenthesis ({@code ( )}) means

    void close() throws CIFSException;

    /**
     * Tests whether this file descriptor is open and valid.
     *
     * @return whether the FD is open and valid
     */
    boolean isOpen();

    /**
     * Tests whether this file descriptor was previously open but has become invalid.
     *
     * @return whether the FD was previously open but became invalid
     */
    boolean isStale();

    /**

    assertTrue(rangeSet.intersects(Range.open(5, 8)));
    assertFalse(rangeSet.intersects(Range.closed(3, 4)));
    assertTrue(rangeSet.intersects(Range.greaterThan(5)));
    assertFalse(rangeSet.intersects(Range.greaterThan(8)));

    assertTrue(rangeSet.encloses(Range.closed(1, 2)));
    assertTrue(rangeSet.encloses(Range.open(5, 8)));
    assertFalse(rangeSet.encloses(Range.closed(1, 8)));

        if (len <= 0) {
            return 0;
        }
        final long start = fp;

        // ensure file is open
        if (!file.isOpen()) {
            file.open(openFlags, 0, SmbFile.ATTR_NORMAL, options);
        }

        int r, n;
        final SmbComReadAndXResponse response = new SmbComReadAndXResponse(b, off);
        do {

 * ("open"). If a range is unbounded on a side, it is neither open nor closed on that side; the
 * bound simply does not exist.
 *
 * @since 10.0
 */
@GwtCompatible
public enum BoundType {
  /** The endpoint value <i>is not</i> considered part of the set ("exclusive"). */
  OPEN(false),
  CLOSED(true);

  final boolean inclusive;

    @Throws(IOException::class)
    private fun invalidLengths(strings: List<String>): Nothing = throw IOException("unexpected journal line: $strings")

    /**
     * Returns a snapshot of this entry. This opens all streams eagerly to guarantee that we see a
     * single published snapshot. If we opened streams lazily then the streams could come from
     * different edits.
     */
    internal fun snapshot(): Snapshot? {