Update tests.

tests/html/typed_arrays_range_checks_test.dart

Index: tests/html/typed_arrays_range_checks_test.dart
diff --git a/tests/html/typed_arrays_range_checks_test.dart b/tests/html/typed_arrays_range_checks_test.dart
index 6995afac7243b0dd36478cbb25641289903be880..6cb83530458553b0a885745c3ea7caf860d699f0 100644
--- a/tests/html/typed_arrays_range_checks_test.dart
+++ b/tests/html/typed_arrays_range_checks_test.dart
@@ -18,18 +18,18 @@ main() {
   test('outOfRangeAccess_dynamic', () {
       var a = new Uint8List(1024);
 
-      expect(a[a.length], isNull);
-      expect(a[a.length + 1], isNull);
-      expect(a[a.length + 1024], isNull);
+      expect(() => a[a.length], throws);
+      expect(() => a[a.length + 1], throws);
+      expect(() => a[a.length + 1024], throws);
 
       // expect(a[-1], isNull);
       // expect(a[-2], isNull);
       // expect(a[-1024], isNull);
 
       // It's harder to test out of range setters, but let's do some minimum.
-      a[a.length] = 0xdeadbeaf;
-      a[a.length + 1] = 0xdeadbeaf;
-      a[a.length + 1024] = 0xdeadbeaf;
+      expect(() => a[a.length] = 0xdeadbeaf, throws);
+      expect(() => a[a.length + 1] = 0xdeadbeaf, throws);
+      expect(() => a[a.length + 1024] = 0xdeadbeaf, throws);
 
       // a[-1] = 0xdeadbeaf;
       // a[-2] = 0xdeadbeaf;
@@ -39,18 +39,18 @@ main() {
   test('outOfRange_typed', () {
       Uint8List a = new Uint8List(1024);
 
-      expect(a[a.length], isNull);
-      expect(a[a.length + 1], isNull);
-      expect(a[a.length + 1024], isNull);
+      expect(() => a[a.length], throws);
+      expect(() => a[a.length + 1], throws);
+      expect(() => a[a.length + 1024], throws);
 
       // expect(a[-1], isNull);
       // expect(a[-2], isNull);
       // expect(a[-1024], isNull);
 
       // It's harder to test out of range setters, but let's do some minimum.
-      a[a.length] = 0xdeadbeaf;
-      a[a.length + 1] = 0xdeadbeaf;
-      a[a.length + 1024] = 0xdeadbeaf;
+      expect(() => a[a.length] = 0xdeadbeaf, throws);
+      expect(() => a[a.length + 1] = 0xdeadbeaf, throws);
+      expect(() => a[a.length + 1024] = 0xdeadbeaf, throws);
 
       // a[-1] = 0xdeadbeaf;
       // a[-2] = 0xdeadbeaf;