svoid test_structure_multiDimensionalIntArrays() {
  int[] a = new { 3, 10, -5 };
  
  assertEqualsVerbose("intarray{3, 10, -5}", struct(a));
  assertEqualsVerbose(ll(3, 10, -5), toList(restruct(a)));
  
  int[] b = new { 4 };
  int[][] c = { a, b };
  
  assertEqualsVerbose("intarray/2{intarray{3, 10, -5}, intarray{4}}", struct(c));
  int[][] c2 = restruct(c); // check the actual type
  assertEqualsVerbose(ll(ll(3, 10, -5), ll(4)), lmap toList(toList(c2)));
  
  // test 3rd dimension
  int[][][] d = { c };
  
  assertEqualsVerbose("intarray/3{intarray/2{intarray{3, 10, -5}, intarray{4}}}", struct(d));
  int[][][] d2 = restruct(d); // check the actual type
  assertEqualsVerbose(ll(ll(ll(3, 10, -5), ll(4))),
    lmap(l -> lmap toList(l), d2));
}

Began life as a copy of #1024875