import junit.framework.AssertionFailedError;
import junit.framework.TestCase;

/**
 * Base class for JSR166 Junit TCK tests. Defines some constants, utility methods and classes, as
 * well as a simple framework for helping to make sure that assertions failing in generated threads
 * cause the associated test that generated them to itself fail (which JUnit does not otherwise
 * arrange). The rules for creating such tests are:
 *
 * <ol>

public final class Monitor {
  // TODO(user): Use raw LockSupport or AbstractQueuedSynchronizer instead of ReentrantLock.
  // TODO(user): "Port" jsr166 tests for ReentrantLock.
  //
  // TODO(user): Change API to make it impossible to use a Guard with the "wrong" monitor,
  //    by making the monitor implicit, and to eliminate other sources of IMSE.
  //    Imagine:
  //    guard.lock();

   *     class under test.
   */
  protected abstract Map<K, V> makeEmptyMap() throws UnsupportedOperationException;

  /**
   * Creates a new, non-empty instance of the class under test.
   *
   * @return a new, non-empty map instance.
   * @throws UnsupportedOperationException if it's not possible to make a non-empty instance of the
   *     class under test.

      }

      @Override
      public <T> T[] toArray(T[] a) {
        toArrayCalled = true;
        return super.toArray(a);
      }
    }

    // Test that toArray() is used to make a defensive copy in copyOf(), so concurrently modified
    // synchronized collections can be safely copied.
    TestArrayList<String> toCopy = new TestArrayList<>();
    ImmutableSortedMultiset<String> unused =

   * AnnotatedElement}, which {@code TypeVariable} began to extend only in Java 8. Those methods
   * refer only to types present in Java 7, so we could implement them in {@code TypeVariableImpl}
   * today. (We could probably then make {@code TypeVariableImpl} implement {@code AnnotatedElement}
   * so that we get partial compile-time checking.)
   *
   * <p>This workaround should be removed at a distant future time when we no longer support Java

   * generated using this are byte-wise identical to those created using the C++ version, but note
   * that this uses unsigned integers (see {@link com.google.common.primitives.UnsignedInts}).
   * Comparisons between the two should take this into account.
   *
   * <p>Fingerprint2011() is a form of Murmur2 on strings up to 32 bytes and a form of CityHash for
   * longer strings. It could have been one or the other throughout. The main advantage of the

    // parseable, but the spec doesn't seem to say which exception is thrown for an invalid radix.
    // In contrast to the JVM, Kotlin native throws an Illegal argument exception in this case
    // (which seems to make more sense).
    try {
      UnsignedInts.parseUnsignedInt("0", Character.MIN_RADIX - 1);
      fail();
    } catch (NumberFormatException expected) {
    } catch (IllegalArgumentException expected) {

    final String expected = "TestClass{field1=1, value1, field2=value2}";

    assertEquals(expected, helper.toString());
    // Call toString again
    assertEquals(expected, helper.toString());

    // Make sure the cached value is reset when we modify the helper at all
    final String expected2 = "TestClass{field1=1, value1, field2=value2, 2}";
    helper.addValue(2);
    assertEquals(expected2, helper.toString());
  }

    this.features = Helpers.copyToSet(features);
    this.expectedElements = Helpers.copyToList(expectedElements);
    this.knownOrder = knownOrder;
    this.startIndex = startIndex;
  }

  /**
   * I'd like to make this a parameter to the constructor, but I can't because the stimulus
   * instances refer to {@code this}.
   */
  protected abstract Iterable<? extends Stimulus<E, ? super I>> getStimulusValues();

  /**

  @J2ktIncompatible // serialization
  @GwtIncompatible // serialization
  Object writeReplace() {
    return super.writeReplace();
  }

  // This class is never actually serialized directly, but we have to make the
  // warning go away (and suppressing would suppress for all nested classes too)
  @J2ktIncompatible // serialization
  private static final long serialVersionUID = 0;