// The opposite order should fail (Policies.THROW).
    PotentialDeadlockException firstException = null;
    lockB.lock();
    PotentialDeadlockException expected =
        assertThrows(PotentialDeadlockException.class, () -> lockA.lock());
    checkMessage(expected, "LockB -> LockA", "LockA -> LockB");
    firstException = expected;
    // Second time should also fail, with a cached causal chain.

      // One more than maximum value
      UnsignedInts.decode("0xfffffffff");
      fail();
    } catch (NumberFormatException expected) {
    }

    try {
      UnsignedInts.decode("-5");
      fail();
    } catch (NumberFormatException expected) {
    }

    try {
      UnsignedInts.decode("-0x5");
      fail();
    } catch (NumberFormatException expected) {
    }

    try {

    try {
      iia.get(-1);
      fail();
    } catch (IndexOutOfBoundsException expected) {
    }
    try {
      iia.get(3);
      fail();
    } catch (IndexOutOfBoundsException expected) {
    }

    iia = iia.subArray(1, 2);
    try {
      iia.get(-1);
      fail();
    } catch (IndexOutOfBoundsException expected) {
    }
  }

      }
    }
  }

  public void testStaticOneArgMethodsThatShouldFail() throws Exception {
    for (String methodName : STATIC_ONE_ARG_METHODS_SHOULD_FAIL) {
      Method method = OneArg.class.getMethod(methodName, String.class);
      boolean foundProblem = false;
      try {
        new NullPointerTester().testMethodParameter(new OneArg(), method, 0);

        fail("Expected ArithmeticException");
      } catch (ArithmeticException expected) {
      }
    }
  }

  @GwtIncompatible // DoubleMath.roundToInt(double, RoundingMode)
  public void testRoundNaNToIntAlwaysFails() {
    for (RoundingMode mode : ALL_ROUNDING_MODES) {
      try {
        DoubleMath.roundToInt(Double.NaN, mode);
        fail("Expected ArithmeticException");

    try {
      ImmutableBiMap.of(null, 1);
      fail();
    } catch (NullPointerException expected) {
    }

    try {
      ImmutableBiMap.of("one", 1, null, 2);
      fail();
    } catch (NullPointerException expected) {
    }
  }

  public void testOfNullValue() {
    try {
      ImmutableBiMap.of("one", null);
      fail();
    } catch (NullPointerException expected) {
    }

  }

  /**
   * Just like fail(reason), but additionally recording (using threadRecordFailure) any
   * AssertionFailedError thrown, so that the current testcase will fail.
   */
  public void threadFail(String reason) {
    try {
      fail(reason);
    } catch (AssertionFailedError t) {
      threadRecordFailure(t);
      fail(reason);
    }
  }

  /**

      try {
        IntMath.ceilingPowerOfTwo(x);
        fail("Expected IllegalArgumentException");
      } catch (IllegalArgumentException expected) {
      }
    }
  }

  public void testFloorPowerOfTwoNegative() {
    for (int x : NEGATIVE_INTEGER_CANDIDATES) {
      try {
        IntMath.floorPowerOfTwo(x);
        fail("Expected IllegalArgumentException");
      } catch (IllegalArgumentException expected) {

      // One more than maximum value
      UnsignedLongs.decode("0xfffffffffffffffff");
      fail();
    } catch (NumberFormatException expected) {
    }

    try {
      UnsignedLongs.decode("-5");
      fail();
    } catch (NumberFormatException expected) {
    }

    try {
      UnsignedLongs.decode("-0x5");
      fail();
    } catch (NumberFormatException expected) {
    }

    try {

      assertInvariants(map);
      try {
        iterator.remove();
        fail("Expected IllegalStateException.");
      } catch (IllegalStateException expected) {
      }
    } else {
      iterator.next();
      try {
        iterator.remove();
        fail("Expected UnsupportedOperationException.");
      } catch (UnsupportedOperationException expected) {
      }
    }