Support various range methods on NodeList.

client/tests/client/html/NodeTests.dart

Index: client/tests/client/html/NodeTests.dart
diff --git a/client/tests/client/html/NodeTests.dart b/client/tests/client/html/NodeTests.dart
index c5728507a459ace5f874951bc1adc108d9d8fce1..0389d83e2c4bc51953daa46f31f3e811a8c1563d 100644
--- a/client/tests/client/html/NodeTests.dart
+++ b/client/tests/client/html/NodeTests.dart
@@ -63,14 +63,13 @@ void testNode() {
       Expect.isTrue(node.nodes[2] is Comment);
     });
 
-    // TODO(nweiz): make this work
-    // test('[]=', () {
-    //   var node = makeNodeWithChildren();
-    //   node.nodes[1] = new Element.tag('hr');
-    //   Expect.isTrue(node.nodes[0] is Text);
-    //   Expect.isTrue(node.nodes[1] is HRElement);
-    //   Expect.isTrue(node.nodes[2] is Comment);
-    // });
+    test('[]=', () {
+      var node = makeNodeWithChildren();
+      node.nodes[1] = new Element.tag('hr');
+      Expect.isTrue(node.nodes[0] is Text);
+      Expect.isTrue(node.nodes[1] is HRElement);
+      Expect.isTrue(node.nodes[2] is Comment);
+    });
 
     test('add', () {
       var node = makeNode();
@@ -110,6 +109,156 @@ void testNode() {
       Expect.isTrue(node.nodes[5] is InputElement);
     });
 
+    group('setRange', () {
+      test('one node', () {
+        var node = makeNodeWithChildren();
+        node.nodes.setRange(1, 1, [new Element.tag('hr')]);
+        Expect.isTrue(node.nodes[0] is Text);
+        Expect.isTrue(node.nodes[1] is HRElement);
+        Expect.isTrue(node.nodes[2] is Comment);
+      });
+
+      test('several nodes', () {
+        var node = makeNodeWithChildren();
+        node.nodes.setRange(1, 2, [
+          new Element.tag('hr'), new Element.tag('img')]);
+        Expect.isTrue(node.nodes[0] is Text);
+        Expect.isTrue(node.nodes[1] is HRElement);
+        Expect.isTrue(node.nodes[2] is ImageElement);
+      });
+
+      test('fewer than all source nodes', () {
+        var node = makeNodeWithChildren();
+        node.nodes.setRange(1, 1, [
+          new Element.tag('hr'), new Element.tag('img')]);
+        Expect.isTrue(node.nodes[0] is Text);
+        Expect.isTrue(node.nodes[1] is HRElement);
+        Expect.isTrue(node.nodes[2] is Comment);
+      });
+
+      test('startFrom', () {
+        var node = makeNodeWithChildren();
+        node.nodes.setRange(1, 1, [
+          new Element.tag('hr'), new Element.tag('img')], 1);
+        Expect.isTrue(node.nodes[0] is Text);
+        Expect.isTrue(node.nodes[1] is ImageElement);
+        Expect.isTrue(node.nodes[2] is Comment);
+      });
+
+      test('negative length', () {
+        var node = makeNodeWithChildren();
+        Expect.throws(
+            () => node.nodes.setRange(1, -1, [new Element.tag('hr')]),
+            (e) => e is IllegalArgumentException);
+      });
+
+      test('off the end of dest', () {
+        var node = makeNodeWithChildren();
+        Expect.throws(() {
+          node.nodes.setRange(2, 2, [
+            new Element.tag('hr'), new Element.tag('img')]);
+        }, (e) => e is IndexOutOfRangeException);
+      });
+
+      test('off the beginning of dest', () {
+        var node = makeNodeWithChildren();
+        Expect.throws(
+            () => node.nodes.setRange(-1, 1, [new Element.tag('hr')]),
+            (e) => e is IndexOutOfRangeException);
+      });
+
+      test('off the end of source', () {
+        var node = makeNodeWithChildren();
+        Expect.throws(
+            () => node.nodes.setRange(1, 2, [new Element.tag('hr')]),
+            (e) => e is IndexOutOfRangeException);
+      });
+
+      test('off the beginning of source', () {
+        var node = makeNodeWithChildren();
+        Expect.throws(
+            () => node.nodes.setRange(1, 1, [new Element.tag('hr')], -1),
+            (e) => e is IndexOutOfRangeException);
+      });
+    });
+
+    group('removeRange', () {
+      test('one node', () {
+        var node = makeNodeWithChildren();
+        node.nodes.removeRange(1, 1);
+        Expect.equals(2, node.nodes.length);
+        Expect.isTrue(node.nodes[0] is Text);
+        Expect.isTrue(node.nodes[1] is Comment);
+      });
+
+      test('two nodes', () {
+        var node = makeNodeWithChildren();
+        node.nodes.removeRange(1, 2);
+        Expect.equals(1, node.nodes.length);
+        Expect.isTrue(node.nodes[0] is Text);
+      });
+
+      test('all nodes', () {
+        var node = makeNodeWithChildren();
+        node.nodes.removeRange(0, 3);
+        Expect.isTrue(node.nodes.isEmpty());
+      });
+
+      test('negative length', () {
+        var node = makeNodeWithChildren();
+        Expect.throws(
+            () => node.nodes.removeRange(2, -1),
+            (e) => e is IllegalArgumentException);
+      });
+
+      test('off the end', () {
+        var node = makeNodeWithChildren();
+        Expect.throws(
+            () => node.nodes.removeRange(2, 3),
+            (e) => e is IndexOutOfRangeException);
+      });
+
+      test('off the beginning', () {
+        var node = makeNodeWithChildren();
+        Expect.throws(
+            () => node.nodes.removeRange(-1, 1),
+            (e) => e is IndexOutOfRangeException);
+      });
+    });
+
+    group('getRange', () {
+      test('one node', () {
+        var range = makeNodeWithChildren().nodes.getRange(2, 1);
+        Expect.equals(1, range.length);
+        Expect.isTrue(range[0] is Comment);
+      });
+
+      test('two nodes', () {
+        var range = makeNodeWithChildren().nodes.getRange(1, 2);
+        Expect.equals(2, range.length);
+        Expect.isTrue(range[0] is BRElement);
+        Expect.isTrue(range[1] is Comment);
+      });
+
+      test('negative length', () {
+        Expect.throws(
+            () => makeNodeWithChildren().nodes.getRange(2, -1),
+            (e) => e is IllegalArgumentException);
+      });
+
+      test('off the end', () {
+        Expect.throws(
+            () => makeNodeWithChildren().nodes.getRange(2, 2),
+            (e) => e is IndexOutOfRangeException);
+      });
+
+      test('off the beginning', () {
+        Expect.throws(
+            () => makeNodeWithChildren().nodes.getRange(-1, 2),
+            (e) => e is IndexOutOfRangeException);
+      });
+    });
+
     test('indexOf', () {
       var node = makeNodeWithChildren();
       Expect.equals(0, node.nodes.indexOf(node.nodes[0]));