fix(facades): fix splice semantics; add test

modules/angular2/src/facade/collection.dart

@@ -154,7 +154,8 @@ class ListWrapper {
   static List slice(List l, int from, int to) {
     return l.sublist(from, to);
   }
-  static List splice(List l, int from, int to) {
+  static List splice(List l, int from, int length) {
+    var to = from + length;
     var sub = l.sublist(from, to);
     l.removeRange(from, to);
     return sub;

modules/angular2/src/facade/collection.es6

@@ -193,8 +193,8 @@ export class ListWrapper {
   static slice(l:List, from:int, to:int):List {
     return l.slice(from, to);
   }
-  static splice(l:List, from:int, to:int):List {
-    return l.splice(from, to);
+  static splice(l:List, from:int, length:int):List {
+    return l.splice(from, length);
   }
   static sort(l:List, compareFn:Function) {
     l.sort(compareFn);

modules/angular2/src/facade/collection.ts

@@ -168,6 +168,9 @@ export class ListWrapper {
     return true;
   }
   static slice<T>(l: List<T>, from: int, to: int): List<T> { return l.slice(from, to); }
+  static splice<T>(l:List<T>, from:int, length:int):List<T> {
+    return l.splice(from, length);
+  }
   static sort<T>(l: List<T>, compareFn: (a: T, b: T) => number) { l.sort(compareFn); }
 }
 

modules/angular2/test/facade/collection_spec.js

@@ -0,0 +1,16 @@
+import {describe, it, expect, beforeEach, ddescribe, iit, xit}
+  from 'angular2/test_lib';
+
+import {List, ListWrapper} from 'angular2/src/facade/collection';
+
+export function main() {
+  describe('ListWrapper', () => {
+    describe('splice', () => {
+      it('should remove sublist of given length and return it',  () => {
+        var list = [1, 2, 3, 4, 5, 6];
+        expect(ListWrapper.splice(list, 1, 3)).toEqual([2, 3, 4]);
+        expect(list).toEqual([1, 5, 6]);
+      });
+    });
+ });
+}

modules/angular2_material/src/components/switcher/switch.js

@@ -65,7 +65,7 @@ export class MdSwitch {
   }
 
   onKeydown(event: KeyboardEvent) {
-    if (event.keyCode == KEY_SPACE) {
+    if (event.keyCode === KEY_SPACE) {
       event.preventDefault();
       this.toggle(event);
     }