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Side by Side Diff: packages/quiver_iterables/test/enumerate_test.dart

Issue 2119523002: Added full js & js_util packages (Closed) Base URL: git@github.com:dart-lang/observatory_pub_packages.git@master
Patch Set: Created 4 years, 5 months ago
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1 // Copyright 2013 Google Inc. All Rights Reserved. 1 // Copyright 2013 Google Inc. All Rights Reserved.
2 // 2 //
3 // Licensed under the Apache License, Version 2.0 (the "License"); 3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License. 4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at 5 // You may obtain a copy of the License at
6 // 6 //
7 // http://www.apache.org/licenses/LICENSE-2.0 7 // http://www.apache.org/licenses/LICENSE-2.0
8 // 8 //
9 // Unless required by applicable law or agreed to in writing, software 9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS, 10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and 12 // See the License for the specific language governing permissions and
13 // limitations under the License. 13 // limitations under the License.
14 14
15 library quiver.iterables.enumerate_test; 15 library quiver.iterables.enumerate_test;
16 16
17 import 'package:test/test.dart'; 17 import 'package:test/test.dart';
18 import 'package:quiver/iterables.dart'; 18 import 'package:quiver_iterables/iterables.dart';
19 19
20 main() { 20 main() {
21 group('enumerate', () { 21 group('enumerate', () {
22 test("should add indices to its argument", () { 22 test("should add indices to its argument", () {
23 var e = enumerate(['a', 'b', 'c']); 23 var e = enumerate(['a', 'b', 'c']);
24 expect(e.map((v) => v.index), [0, 1, 2]); 24 expect(e.map((v) => v.index), [0, 1, 2]);
25 expect(e.map((v) => v.value), ['a', 'b', 'c']); 25 expect(e.map((v) => v.value), ['a', 'b', 'c']);
26 }); 26 });
27 27
28 test("should return an empty iterable given an empty iterable", () { 28 test("should return an empty iterable given an empty iterable", () {
29 expect(enumerate([]), []); 29 expect(enumerate([]), []);
30 }); 30 });
31 31
32 test("should add indices to its argument", () { 32 test("should add indices to its argument", () {
33 var e = enumerate(['a', 'b', 'c']); 33 var e = enumerate(['a', 'b', 'c']);
34 expect(e.map((v) => v.index), [0, 1, 2]); 34 expect(e.map((v) => v.index), [0, 1, 2]);
35 expect(e.map((v) => v.index), [ 0, 1, 2 ], 35 expect(e.map((v) => v.index), [0, 1, 2],
36 reason: 'should enumerate to the same values a second time'); 36 reason: 'should enumerate to the same values a second time');
37 }); 37 });
38 38
39 test("first", () { 39 test("first", () {
40 var e = enumerate(['a', 'b', 'c']); 40 var e = enumerate(['a', 'b', 'c']);
41 expect(e.first.value, 'a'); 41 expect(e.first.value, 'a');
42 expect(e.first.index, 0); 42 expect(e.first.index, 0);
43 expect(e.first.value, 'a'); 43 expect(e.first.value, 'a');
44 }); 44 });
45 45
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77 var e1 = enumerate(list); 77 var e1 = enumerate(list);
78 var e2 = enumerate(list); 78 var e2 = enumerate(list);
79 for (int i = 0; i < 2; i++) { 79 for (int i = 0; i < 2; i++) {
80 expect(e1.elementAt(i), e2.elementAt(i)); 80 expect(e1.elementAt(i), e2.elementAt(i));
81 expect(e1.elementAt(i).hashCode, e1.elementAt(i).hashCode); 81 expect(e1.elementAt(i).hashCode, e1.elementAt(i).hashCode);
82 expect(identical(e1.elementAt(i), e2.elementAt(i)), isFalse); 82 expect(identical(e1.elementAt(i), e2.elementAt(i)), isFalse);
83 } 83 }
84 }); 84 });
85 }); 85 });
86 } 86 }
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