LibTest/math/MutableRectangle/operator_equality_A01_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)
 * A MutableRectangle is only equal to another MutableRectangle with the same coordinates.
 * @description checks that this operator uses value comparison rather than identity comparison.
 * @needsreview #16170
 * @author kaigorodov
 */
import "dart:math";
import "../../../Utils/expect.dart";

const List<num> values = const [
   0, -1, 1, 10, -10, 100, -100,
   -1.7976931348623157e308, -3.273390607896142E150, -4.503599627370497E15, -4.503599627370496E15,
   -4.5035996273704955E15, -4.294967296000001E9, -4.294967296E9, -4.2949672959999995E9, -6031769.5,
   -101.0, -100.00000000000001, -100.0, -99.99999999999999, -99.0, -10.0, -1.0000000000000002, -1.0,
   -.9999999999999999, -.7, -2.2250738585072014e-308, -4.9406564584124654e-324, .0, 4.9406564584124654e-324,
   2.2250738585072014e-308, .7, .9999999999999999, 1.0, 1.0000000000000002, 10.0, 99.0, 99.99999999999999,
   100.0, 100.00000000000001, 101.0, 6031769.5, 4.2949672959999995E9, 4.294967296E9, 4.294967296000001E9,
   4.5035996273704955E15, 4.503599627370496E15, 4.503599627370497E15, 3.273390607896142E150,
   1.7976931348623157e308
 ];
 
Random rand = new Random(6031769);

num randomVal() {
  int k = rand.nextInt(values.length);
  return values[k];
}

main() {
  for(int i = 0; i < 1000; i++) {
    num x = randomVal();
    num y = randomVal();
    num z = randomVal();
    num w = randomVal();
    MutableRectangle r1=new MutableRectangle(x, y, z, w);
    MutableRectangle r2=new MutableRectangle(x, y, z, w);
    Expect.isFalse(identical(r1,r2));
    Expect.isTrue(r1==r2, "x=$x, y=$y, z=$z, w=$w");
  }
}