public void assertEquals(Beam b1, Beam b2) {
String message = "\n" + b1.toString() + " \n" + b2.toString() + "\n";
assertEquals(message, b1.lines.size(), b2.lines.size());
for (int i = 0; i < b1.lines.size(); i++) {
assertEquals(message, b1.lines.get(i), b2.lines.get(i));
}
}
