michael@0: // If an array is truncated to the left of an iterator it, it.next() returns { done: true }.
michael@0: 
michael@0: load(libdir + "asserts.js");
michael@0: load(libdir + "iteration.js");
michael@0: 
michael@0: var arr = [0, 1, 2];
michael@0: var it = arr[std_iterator]();
michael@0: var ki = arr.keys();
michael@0: var ei = arr.entries();
michael@0: 
michael@0: assertIteratorNext(it, 0);
michael@0: assertIteratorNext(it, 1);
michael@0: assertIteratorNext(ki, 0);
michael@0: assertIteratorNext(ki, 1);
michael@0: assertIteratorNext(ei, [0, 0]);
michael@0: assertIteratorNext(ei, [1, 1]);
michael@0: arr.length = 1;
michael@0: assertIteratorDone(it, undefined);
michael@0: assertIteratorDone(ki, undefined);
michael@0: assertIteratorDone(ei, undefined);