Add JsArray

tests/html/js_test.dart

Index: tests/html/js_test.dart
diff --git a/tests/html/js_test.dart b/tests/html/js_test.dart
index c7d53f312e8f83eaaeddcb38dd5ab77bc3ad0c62..23f03cd6809a9ba6e19e5f1344dde320a8579fd3 100644
--- a/tests/html/js_test.dart
+++ b/tests/html/js_test.dart
@@ -450,6 +450,137 @@ main() {
 */
   });
 
+  group('JsArray', () {
+
+    test('new JsArray()', () {
+      var array = new JsArray();
+      var arrayType = context['Array'];
+      expect(array.instanceof(arrayType), true);
+      expect(array, []);
+      // basic check that it behaves like a List
+      array.addAll([1, 2, 3]);
+      expect(array, [1, 2, 3]);
+    });
+
+    test('new JsArray.from()', () {
+      var array = new JsArray.from([1, 2, 3]);
+      var arrayType = context['Array'];
+      expect(array.instanceof(arrayType), true);
+      expect(array, [1, 2, 3]);
+    });
+
+    test('get Array from JS', () {
+      context['a'] = [1, 2, 3];
+      var a = context['a'];
+      expect(a is JsArray, true);
+      expect(a, [1, 2, 3]);
+      context.deleteProperty('a');
+    });
+
+    test('[]', () {
+      var array = new JsArray.from([1, 2]);
+      expect(array[0], 1);
+      expect(array[1], 2);
+      expect(() => array[-1], throwsA(isRangeError));
+      expect(() => array[2], throwsA(isRangeError));
+    });
+
+   test('[]=', () {
+      var array = new JsArray.from([1, 2]);
+      array[0] = 'd';
+      array[1] = 'e';
+      expect(array, ['d', 'e']);
+      expect(() => array[-1] = 3, throwsA(isRangeError));
+      expect(() => array[2] = 3, throwsA(isRangeError));
+    });
+
+    test('length', () {
+      var array = new JsArray.from([1, 2, 3]);
+      expect(array.length, 3);
+      array.add(4);
+      expect(array.length, 4);
+      array.length = 2;
+      expect(array, [1, 2]);
+      array.length = 3;
+      expect(array, [1, 2, null]);
+    });
+ 
+     test('add', () {
+      var array = new JsArray();
+      array.add('a');
+      expect(array, ['a']);
+      array.add('b');
+      expect(array, ['a', 'b']);
+    });
+
+    test('addAll', () {
+      var array = new JsArray();
+      array.addAll(['a', 'b']);
+      expect(array, ['a', 'b']);
+      // make sure addAll can handle Iterables
+      array.addAll(new Set.from(['c']));
+      expect(array, ['a', 'b', 'c']);
+    });
+
+    test('insert', () {
+      var array = new JsArray.from([]);
+      array.insert(0, 'b');
+      expect(array, ['b']);
+      array.insert(0, 'a');
+      expect(array, ['a', 'b']);
+      array.insert(2, 'c');
+      expect(array, ['a', 'b', 'c']);
+      expect(() => array.insert(4, 'e'), throwsA(isRangeError));
+      expect(() => array.insert(-1, 'e'), throwsA(isRangeError));
+    });
+
+    test('removeAt', () {
+      var array = new JsArray.from(['a', 'b', 'c']);
+      expect(array.removeAt(1), 'b');
+      expect(array, ['a', 'c']);
+      expect(() => array.removeAt(2), throwsA(isRangeError));
+      expect(() => array.removeAt(-1), throwsA(isRangeError));
+    });
+
+    test('removeLast', () {
+      var array = new JsArray.from(['a', 'b', 'c']);
+      expect(array.removeLast(), 'c');
+      expect(array, ['a', 'b']);
+      array.length = 0;
+      expect(() => array.removeLast(), throwsA(isRangeError));
+    });
+
+    test('removeRange', () {
+      var array = new JsArray.from(['a', 'b', 'c', 'd']);
+      array.removeRange(1, 3);
+      expect(array, ['a', 'd']);
+      expect(() => array.removeRange(-1, 2), throwsA(isRangeError));
+      expect(() => array.removeRange(0, 3), throwsA(isRangeError));
+      expect(() => array.removeRange(2, 1), throwsA(isRangeError));
+    });
+
+    test('setRange', () {
+      var array = new JsArray.from(['a', 'b', 'c', 'd']);
+      array.setRange(1, 3, ['e', 'f']);
+      expect(array, ['a', 'e', 'f', 'd']);
+      array.setRange(3, 4, ['g', 'h', 'i'], 1);
+      expect(array, ['a', 'e', 'f', 'h']);
+    });
+
+    test('sort', () {
+      var array = new JsArray.from(['c', 'a', 'b']);
+      array.sort();
+      expect(array, ['a', 'b', 'c']);
+    });
+
+    test('sort with a Comparator', () {
+      var array = new JsArray.from(['c', 'a', 'b']);
+      array.sort((a, b) => -(a.compareTo(b)));
+      expect(array, ['c', 'b', 'a']);
+    });
+
+  });
+
   group('JsObject.fromBrowserObject()', () {
 
     test('Nodes are proxied', () {