michael@0: /* test Set.prototype.forEach */
michael@0: 
michael@0: load(libdir + 'asserts.js');
michael@0: load(libdir + 'iteration.js');
michael@0: 
michael@0: // testing success conditions of Set.prototype.forEach
michael@0: 
michael@0: var testSet = new Set();
michael@0: 
michael@0: function callback(value, key, set) {
michael@0:     assertEq(value, key);
michael@0:     testSet.add(value);
michael@0:     assertEq(set.has(key), true);
michael@0: }
michael@0: 
michael@0: var initialSet = new Set(['a', 1, undefined]);
michael@0: initialSet.forEach(callback);
michael@0: 
michael@0: // test that both the Sets are equal and are in same order
michael@0: var iterator = initialSet[std_iterator]();
michael@0: var count = 0;
michael@0: for (var v of testSet) {
michael@0:     assertEq(initialSet.has(v), true);
michael@0:     assertIteratorNext(iterator, v);
michael@0:     count++;
michael@0: }
michael@0: 
michael@0: //check both the Sets we have are equal in size
michael@0: assertEq(initialSet.size, testSet.size);
michael@0: assertEq(initialSet.size, count);
michael@0: 
michael@0: var x = { abc: 'test'};
michael@0: function callback2(value, key, set) {
michael@0:     assertEq(x, this);
michael@0: }
michael@0: initialSet = new Set(['a']);
michael@0: initialSet.forEach(callback2, x);
michael@0: 
michael@0: // testing failure conditions of Set.prototype.forEach
michael@0: 
michael@0: var m = new Map([['a', 1], ['b', 2.3], ['c', undefined]]);
michael@0: assertThrowsInstanceOf(function() {
michael@0:     Set.prototype.forEach.call(m, callback);
michael@0: }, TypeError, "Set.prototype.forEach should raise TypeError if not a used on a Set");
michael@0: 
michael@0: var fn = 2;
michael@0: assertThrowsInstanceOf(function() {
michael@0:     initialSet.forEach(fn);
michael@0: }, TypeError, "Set.prototype.forEach should raise TypeError if callback is not a function");