Update charted to 0.4.8 and roll

packages/quiver_iterables/test/enumerate_test.dart

-// Copyright 2013 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-library quiver.iterables.enumerate_test;
-
-import 'package:test/test.dart';
-import 'package:quiver_iterables/iterables.dart';
-
-main() {
-  group('enumerate', () {
-    test("should add indices to its argument", () {
-      var e = enumerate(['a', 'b', 'c']);
-      expect(e.map((v) => v.index), [0, 1, 2]);
-      expect(e.map((v) => v.value), ['a', 'b', 'c']);
-    });
-
-    test("should return an empty iterable given an empty iterable", () {
-      expect(enumerate([]), []);
-    });
-
-    test("should add indices to its argument", () {
-      var e = enumerate(['a', 'b', 'c']);
-      expect(e.map((v) => v.index), [0, 1, 2]);
-      expect(e.map((v) => v.index), [0, 1, 2],
-          reason: 'should enumerate to the same values a second time');
-    });
-
-    test("first", () {
-      var e = enumerate(['a', 'b', 'c']);
-      expect(e.first.value, 'a');
-      expect(e.first.index, 0);
-      expect(e.first.value, 'a');
-    });
-
-    test("last", () {
-      var e = enumerate(['a', 'b', 'c']);
-      expect(e.last.value, 'c');
-      expect(e.last.index, 2);
-      expect(e.last.value, 'c');
-    });
-
-    test("single", () {
-      var e = enumerate(['a']);
-      expect(e.single.value, 'a');
-      expect(e.single.index, 0);
-      expect(e.single.value, 'a');
-
-      expect(() => enumerate([1, 2]).single, throws);
-    });
-
-    test("length", () {
-      expect(enumerate([7, 8, 9]).length, 3);
-    });
-
-    test("elementAt", () {
-      var list = ['a', 'b', 'c'];
-      var e = enumerate(list);
-      for (int i = 2; i >= 0; i--) {
-        expect(e.elementAt(i).value, list[i]);
-        expect(e.elementAt(i).index, i);
-      }
-    });
-
-    test("equals and hashcode", () {
-      var list = ['a', 'b', 'c'];
-      var e1 = enumerate(list);
-      var e2 = enumerate(list);
-      for (int i = 0; i < 2; i++) {
-        expect(e1.elementAt(i), e2.elementAt(i));
-        expect(e1.elementAt(i).hashCode, e1.elementAt(i).hashCode);
-        expect(identical(e1.elementAt(i), e2.elementAt(i)), isFalse);
-      }
-    });
-  });
-}