### Question:
Range implements Serializable { public static Range withLength(final int start, final int length) throws IllegalArgumentException { if (length < 0) { throw new IllegalArgumentException("length must not be negative"); } return new Range(start, start + length); } private  Range(final int start, final int end); static Range withOnly(final int integer); static Range between(final int start, final int end); static Range withLength(final int start, final int length); int getStart(); int getEnd(); int length(); boolean isEmpty(); boolean intersects(final Range other); boolean contains(final int integer); boolean isSubsetOf(final Range other); Range[] partitionWith(final Range other); Range offsetBy(final int offset); @Override String toString(); @Override int hashCode(); @Override boolean equals(final Object obj); boolean startsBefore(final Range other); boolean endsBefore(final Range other); boolean endsAfter(final Range other); boolean startsAfter(final Range other); Range[] splitAt(final int integer); Range[] splitAtFromStart(final int length); Range combineWith(Range other); Range expand(int startDelta, int endDelta); Range restrictTo(Range bounds);  }### Answer:
@Test(expected = IllegalArgumentException.class) public void negativeLengthTest() { Range.withLength(10, -1); }