)",                 "  if v.x == 0 and v.y == 0 and v.z == 0",                 "   testSuccess()",                 "endpackage"         );     }      @Test     public void vecs() {         testAssertOkLines(true,                 "package test",                 " native testSuccess()",                 " tuple vec(real x, real y, real z)",                 " function vec.plus(vec other) returns vec",                 "  return vec(this.x + other.x, this.y + other.y, this.z + other.z)",                 " init",                 "  let v = vec(0,0,0)