pkg/matcher: refactor with unittest v0.12 work

test/operator_matchers_test.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library matcher.operator_matchers_test;
 
 import 'package:matcher/matcher.dart';
-import 'package:unittest/unittest.dart' show test, group;
+import 'package:unittest/unittest.dart'
+    show test, group, expect, throwsArgumentError;

[nweiz, 2015/02/17 23:17:42]

Don't use "show" unless we absolutely have to.

[kevmoo, 2015/02/18 00:33:40]

This is very explicit. Since unittest exports matcher, I want to be clear what
we're getting from the matcher package and what we're getting from unittest.

If I eleminate 'show', I could just remove the matcher import entirely and this
code still works

[nweiz, 2015/02/18 00:42:07]

There's no distinction between the test getting something "from matcher" or
"from unittest". It's the same member regardless.
I don't necessarily think this is a bad thing.

[kevmoo, 2015/02/18 00:49:50]

To put it another way: unittest could change what it exports at any time and it
shouldn't affect the code's ability to run. Let's agree to disagree. :-)

 
 import 'test_utils.dart';
 
 void main() {
-  initUtils();
-
   test('anyOf', () {
     // with a list
     shouldFail(
         0, anyOf([equals(1), equals(2)]), "Expected: (<1> or <2>) Actual: <0>");
     shouldPass(1, anyOf([equals(1), equals(2)]));
 
     // with individual items
     shouldFail(
         0, anyOf(equals(1), equals(2)), "Expected: (<1> or <2>) Actual: <0>");
     shouldPass(1, anyOf(equals(1), equals(2)));
@@ skipping 25 matching lines @@
         "Actual: <4> "
         "Which: is not a value less than <4>");
   });
 
   test('If the first argument is a List, the rest must be null', () {
     expect(() => allOf([], 5), throwsArgumentError);
     expect(
         () => anyOf([], null, null, null, null, null, 42), throwsArgumentError);
   });
 }