michael@0: // Clearing an empty Map has no effect.
michael@0: 
michael@0: var m = Map();
michael@0: for (var i = 0; i < 2; i++) {
michael@0:     m.clear();
michael@0:     assertEq(m.size, 0);
michael@0:     assertEq(m.has(undefined), false);
michael@0: }