michael@0: function testBug504520Harder() {
michael@0:     // test 1024 similar cases
michael@0:     var vals = [1/0, -1/0, 0, 0/0];
michael@0:     var ops = ["===", "!==", "==", "!=", "<", ">", "<=", ">="];
michael@0:     for each (var x in vals) {
michael@0:         for each (var y in vals) {
michael@0:             for each (var op in ops) {
michael@0:                 for each (var z in vals) {
michael@0:                     // Assume eval is correct. This depends on the global
michael@0:                     // Infinity property not having been reassigned.
michael@0:                     var xz = eval(x + op + z);
michael@0:                     var yz = eval(y + op + z);
michael@0: 
michael@0:                     var arr = [x, x, x, x, x, x, x, x, x, y];
michael@0:                     assertEq(arr.length > 9, true);
michael@0:                     var expected = [xz, xz, xz, xz, xz, xz, xz, xz, xz, yz];
michael@0: 
michael@0:                     // ?: looks superfluous but that's what we're testing here
michael@0:                     var fun = eval(
michael@0:                         '(function (arr, results) {\n' +
michael@0:                         '    for (let i = 0; i < arr.length; i++)\n' +
michael@0:                         '        results.push(arr[i]' + op + z + ' ? "true" : "false");\n' +
michael@0:                         '});\n');
michael@0:                     var actual = [];
michael@0:                     fun(arr, actual);
michael@0: 		    print(x, y, op, z);
michael@0:                     assertEq("" + actual, "" + expected);
michael@0:                 }
michael@0:             }
michael@0:         }
michael@0:     }
michael@0: }
michael@0: testBug504520Harder();