LibTest/math/Rectangle/operator_equality_A04_t01.dart

/*
 * Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 * for details. All rights reserved. Use of this source code is governed by a
 * BSD-style license that can be found in the LICENSE file.
 */
/**
 * @assertion bool operator ==(other)
 * The equality operator.
 * It must by symmetric: for all objects o1 and o2, o1 == o2 and o2 == o1
 * must either both be true, or both be false.
 * @description checks that the equality operator is symmetric.
 * @needsreview #16170
 * @author kaigorodov
 */
import "dart:math";
import "../../../Utils/expect.dart";

const List<num> values = const [
   0, -1, 1, 10, -10,
   0.0, -1.0, 1.0, 10.0, -10.0,
   double.INFINITY, double.MAX_FINITE, double.MIN_POSITIVE, -double.MAX_FINITE,
   -double.MIN_POSITIVE, double.NAN, double.NEGATIVE_INFINITY
 ];
 
main() {
  for (int i = 0; i < values.length; i++) {
    for (int j = 0; j < values.length; j++) {
      for (int k = 0; k < values.length; k++) {
        for (int l = 0; l < values.length; l++) {
          Rectangle r1=new Rectangle(values[i], values[j], values[k], values[l]);
          Rectangle r2=new Rectangle(values[k], values[l], values[i], values[j]);
    	  var res1 = (r1==r2);
    	  var res2 = (r2==r1);
    	  var res= (res1==res2);
    	  Expect.isTrue(res);
    	  Expect.isNotNull(res);
        }
      }
    }
  }
}