Stage ES6 promises and weak collections

test/mjsunit/harmony/collections.js

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-// Flags: --harmony-collections --expose-gc --allow-natives-syntax
+// Flags: --harmony-collections --harmony-weak-collections
+// Flags: --expose-gc --allow-natives-syntax
 
 
-// Test valid getter and setter calls on Sets.
+// Test valid getter and setter calls on Sets and WeakSets
 function TestValidSetCalls(m) {
   assertDoesNotThrow(function () { m.add(new Object) });
   assertDoesNotThrow(function () { m.has(new Object) });
   assertDoesNotThrow(function () { m.delete(new Object) });
 }
 TestValidSetCalls(new Set);
 TestValidSetCalls(new WeakSet);
 
 
 // Test valid getter and setter calls on Maps and WeakMaps
@@ skipping 14 matching lines @@
   assertThrows(function () { m.get(null) }, TypeError);
   assertThrows(function () { m.set(null, 0) }, TypeError);
   assertThrows(function () { m.get(0) }, TypeError);
   assertThrows(function () { m.set(0, 0) }, TypeError);
   assertThrows(function () { m.get('a-key') }, TypeError);
   assertThrows(function () { m.set('a-key', 0) }, TypeError);
 }
 TestInvalidCalls(new WeakMap);
 
 
-// Test expected behavior for Sets
+// Test expected behavior for Sets and WeakSets
 function TestSet(set, key) {
   assertFalse(set.has(key));
   assertSame(undefined, set.add(key));
   assertTrue(set.has(key));
   assertTrue(set.delete(key));
   assertFalse(set.has(key));
   assertFalse(set.delete(key));
   assertFalse(set.has(key));
 }
 function TestSetBehavior(set) {
@@ skipping 422 matching lines @@
 (function TestMinusZeroMap() {
   var m = new Map();
   m.set(0, 'plus');
   m.set(-0, 'minus');
   assertEquals(1, m.size);
   assertTrue(m.has(0));
   assertTrue(m.has(-0));
   assertEquals('minus', m.get(0));
   assertEquals('minus', m.get(-0));
 })();