/**
 * Unit test for {@link PatternFilenameFilter}.
 *
 * @author Chris Nokleberg
 */
@NullUnmarked
public class PatternFilenameFilterTest extends TestCase {

  public void testSyntaxException() {
    assertThrows(PatternSyntaxException.class, () -> new PatternFilenameFilter("("));
  }

  public void testAccept() {
    File dir = new File("foo");