| <!DOCTYPE html> |
| <html> |
| <body> |
| |
| <script> |
| |
| function testSlice() { |
| var m = new cr.ui.ArrayDataModel([0, 1, 2]); |
| assertArrayEquals([0, 1, 2], m.slice()); |
| assertArrayEquals([1, 2], m.slice(1)); |
| assertArrayEquals([1], m.slice(1, 2)); |
| } |
| |
| function testPush() { |
| var m = new cr.ui.ArrayDataModel([0, 1, 2]); |
| |
| var count = 0; |
| m.addEventListener('splice', function(e) { |
| count++; |
| assertEquals(3, e.index); |
| assertArrayEquals([], e.removed); |
| assertArrayEquals([3, 4], e.added); |
| }); |
| |
| assertEquals(5, m.push(3, 4)); |
| var a = m.slice(); |
| assertArrayEquals([0, 1, 2, 3, 4], a); |
| |
| assertEquals(1, count, 'The splice event should only fire once'); |
| } |
| |
| function testSplice() { |
| function compare(array, args) { |
| var m = new cr.ui.ArrayDataModel(array.slice()); |
| var expected = array.slice(); |
| var result = expected.splice.apply(expected, args); |
| assertArrayEquals(result, m.splice.apply(m, args)); |
| assertArrayEquals(expected, m.slice()); |
| } |
| |
| compare([1, 2, 3], []); |
| compare([1, 2, 3], [0, 0]); |
| compare([1, 2, 3], [0, 1]); |
| compare([1, 2, 3], [1, 1]); |
| compare([1, 2, 3], [0, 3]); |
| compare([1, 2, 3], [0, 1, 5]); |
| compare([1, 2, 3], [0, 3, 1, 2, 3]); |
| compare([1, 2, 3], [5, 3, 1, 2, 3]); |
| } |
| |
| function testPermutation() { |
| function doTest(sourceArray, spliceArgs) { |
| var m = new cr.ui.ArrayDataModel(sourceArray.slice()); |
| var permutation; |
| m.addEventListener('permuted', function(event) { |
| permutation = event.permutation; |
| }); |
| m.splice.apply(m, spliceArgs); |
| var deleted = 0; |
| for (var i = 0; i < sourceArray.length; i++) { |
| if (permutation[i] == -1) |
| deleted++; |
| else |
| assertEquals(sourceArray[i], m.item(permutation[i])); |
| } |
| assertEquals(deleted, spliceArgs[1]); |
| } |
| |
| doTest([1, 2, 3], [0, 0]); |
| doTest([1, 2, 3], [0, 1]); |
| doTest([1, 2, 3], [1, 1]); |
| doTest([1, 2, 3], [0, 3]); |
| doTest([1, 2, 3], [0, 1, 5]); |
| doTest([1, 2, 3], [0, 3, 1, 2, 3]); |
| } |
| |
| function testUpdateIndexes() { |
| var m = new cr.ui.ArrayDataModel([1, 2, 3]); |
| var changedIndexes = []; |
| m.addEventListener('change', function(event) { |
| changedIndexes.push(event.index); |
| }); |
| m.updateIndexes([0, 1, 2]); |
| assertArrayEquals([0, 1, 2], changedIndexes); |
| } |
| |
| function testReplaceItem() { |
| var m = new cr.ui.ArrayDataModel([1, 2, 3]); |
| var permutation = null; |
| var changeIndex; |
| m.addEventListener('permuted', function(event) { |
| permutation = event.permutation; |
| }); |
| m.addEventListener('change', function(event) { |
| changeIndex = event.index; |
| }); |
| m.replaceItem(2, 4); |
| assertEquals(null, permutation); |
| assertEquals(1, changeIndex); |
| } |
| |
| </script> |
| |
| </body> |
| </html> |
