RuntimeException exception3 = new ArithmeticException("exception from stream 3");
    Stream<String> stream1 = Stream.of("foo", "bar").onClose(doThrow(exception1));
    Stream<String> stream2 = Stream.of("baz", "buh").onClose(doThrow(exception2));
    Stream<String> stream3 = Stream.of("quux").onClose(doThrow(exception3));
    RuntimeException exception = null;
    try (Stream<String> concatenated = Streams.concat(stream1, stream2, stream3)) {

    } catch (NullPointerException e) {
    }
    try {
      result.next();
      fail("no exception thrown");
    } catch (NullPointerException e) {
    }
    // There is no way to get "through" to the 3.  Buh-bye
  }

  public void testConcatVarArgsContainingNull() {
    try {
      Iterators.concat(iterateOver(1, 2), null, iterateOver(3), iterateOver(4), iterateOver(5));
      fail("no exception thrown");

    } catch (NullPointerException e) {
    }
    try {
      result.next();
      fail("no exception thrown");
    } catch (NullPointerException e) {
    }
    // There is no way to get "through" to the 3.  Buh-bye
  }

  public void testConcatVarArgsContainingNull() {
    try {
      Iterators.concat(iterateOver(1, 2), null, iterateOver(3), iterateOver(4), iterateOver(5));
      fail("no exception thrown");