### Question:
NodeUtils { public static final boolean isConstraintSatisfied(final IntsRef node, final int level, final int[] levelIndex, final int[][] constraints) { if (node.length != level) { return false; } final int offset = node.offset; final int[] ints = node.ints; int[] constraint; int value; for (int i = 0; i < levelIndex.length; i++) { constraint = constraints[i]; value = ints[offset + levelIndex[i] - 1]; if (value < constraint[0] || value > constraint[1]) { return false; } } return true; }  static final int compare(final IntsRef n1, final IntsRef n2); static final int compareAncestor(final IntsRef n1, final IntsRef n2); static final int compareAncestor(final int[] n1, final int n1Len,
                                          final int[] n2, final int n2Len); static final int[] growAndCopy(final int[] array, final int minSize); static final boolean isConstraintSatisfied(final IntsRef node,
                                                    final int level,
                                                    final int[] levelIndex,
                                                    final int[][] constraints); static final boolean isConstraintSatisfied(final IntsRef node,
                                                    final int level,
                                                    final int[] constraint); static final boolean isConstraintSatisfied(final IntsRef node,
                                                    final int level);  }### Answer:
@Test public void testIsConstraintSatisfied() { final int[] levelIndex = new int[] { 1,3 }; final int[][] constraints = new int[][] { new int[] { 1,8 }, new int[] { 5,5 }, }; IntsRef node = node(1,0,5); assertTrue(NodeUtils.isConstraintSatisfied(node, 3, levelIndex, constraints)); node = node(8,10,5); assertTrue(NodeUtils.isConstraintSatisfied(node, 3, levelIndex, constraints)); node = node(4,5,5,90); assertTrue(NodeUtils.isConstraintSatisfied(node, 4, levelIndex, constraints)); node = node(4); assertFalse(NodeUtils.isConstraintSatisfied(node, 3, levelIndex, constraints)); node = node(4,10); assertFalse(NodeUtils.isConstraintSatisfied(node, 3, levelIndex, constraints)); node = node(0,12,5); assertFalse(NodeUtils.isConstraintSatisfied(node, 3, levelIndex, constraints)); node = node(9,12,5); assertFalse(NodeUtils.isConstraintSatisfied(node, 3, levelIndex, constraints)); node = node(4,5,4); assertFalse(NodeUtils.isConstraintSatisfied(node, 3, levelIndex, constraints)); node = node(4,5,6); assertFalse(NodeUtils.isConstraintSatisfied(node, 3, levelIndex, constraints)); }
@Test public void testIsLevelConstraintSatisfied() { IntsRef node = node(1,5,1); assertTrue(NodeUtils.isConstraintSatisfied(node, 3)); node = node(1,5,1); assertFalse(NodeUtils.isConstraintSatisfied(node, 2)); node = node(1,1,0,0); assertFalse(NodeUtils.isConstraintSatisfied(node, 3)); }