// is smaller.
          buf = new byte[skip];
        }
        if ((skipped = in.read(buf, 0, skip)) == -1) {
          // Reached EOF
          break;
        }
      }

      totalSkipped += skipped;
    }

    return totalSkipped;
  }

  /**
   * Attempts to skip up to {@code n} bytes from the given input stream, but not more than {@code

  }

  /** Stream that will skip a maximum number of bytes at a time. */
  private static class SlowSkipper extends FilterInputStream {
    private final long max;

    SlowSkipper(InputStream in, long max) {
      super(in);
      this.max = max;
    }

    @Override
    public long skip(long n) throws IOException {
      return super.skip(Math.min(max, n));
    }
  }

            CollectionFeature.ALLOWS_NULL_VALUES,
            CollectionFeature.KNOWN_ORDER,
            CollectionFeature.RESTRICTS_ELEMENTS,
            CollectionSize.ANY)
        // don't skip collection tests since checkedQueue() is not tested by TestsForListsInJavaUtil
        .suppressing(suppressForCheckedQueue())
        .createTestSuite();
  }

  public Test testsForArrayDeque() {

    tester.testConstructors(PatternFilenameFilter.class, Visibility.PACKAGE);
    tester.testStaticMethods(PatternFilenameFilter.class, Visibility.PACKAGE); // currently none

    // The reason that we skip this method is discussed in a comment on the method.
    tester.ignore(PatternFilenameFilter.class.getMethod("accept", File.class, String.class));
    tester.testInstanceMethods(new PatternFilenameFilter(".*"), Visibility.PACKAGE);

    assertEquals(bytes.length, source.size());
    assertTrue(source.wasStreamOpened() && source.wasStreamClosed());

    // test that we can get the size even if skip() isn't supported
    assertEquals(bytes.length, new TestByteSource(bytes, SKIP_THROWS).size());

    // test that we can get the size even if available() always returns zero
    assertEquals(bytes.length, new TestByteSource(bytes, AVAILABLE_ALWAYS_ZERO).size());

    return new QueueTestSuiteBuilder<E>().usingGenerator(generator);
  }

  private boolean runCollectionTests = true;

  /**
   * Specify whether to skip the general collection tests. Call this method when testing a
   * collection that's both a queue and a list, to avoid running the common collection tests twice.
   * By default, collection tests do run.
   */

           * well be a JDK bug.
           */
          || info.getName().contains("TypeTokenTest")
      /*
       * Luckily, we don't care about analyzing tests at all. We'd skip them all if we could do so
       * trivially, but it's enough to skip these ones.
       */
      ) {
        continue;
      }
      Class<?> clazz = info.load();
      try {
        Method unused = clazz.getDeclaredMethod("writeReplace");

           * well be a JDK bug.
           */
          || info.getName().contains("TypeTokenTest")
      /*
       * Luckily, we don't care about analyzing tests at all. We'd skip them all if we could do so
       * trivially, but it's enough to skip these ones.
       */
      ) {
        continue;
      }
      Class<?> clazz = info.load();
      try {
        Method unused = clazz.getDeclaredMethod("writeReplace");

    CharSource source = newCharSource("a");
    Iterable<CharSource> list = ImmutableList.of(source, source);
    Reader joinedReader = CharSource.concat(list).openStream();

    assertEquals(0, joinedReader.skip(0));
    assertEquals('a', joinedReader.read());
  }

 */

package com.google.common.io;

/**
 * Options controlling the behavior of sources/sinks/streams for testing.
 *
 * @author Colin Decker
 */
public enum TestOption {
  OPEN_THROWS,
  SKIP_THROWS,
  READ_THROWS,
  WRITE_THROWS,
  CLOSE_THROWS,
  AVAILABLE_ALWAYS_ZERO