Store the async-await compiled pub code directly in the repo.

sdk/lib/_internal/pub_generated/test/version_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 version_test;
-
 import 'package:unittest/unittest.dart';
 import 'test_pub.dart';
 import '../lib/src/version.dart';
-
 main() {
   initConfig();
-
   final v114 = new Version.parse('1.1.4');
   final v123 = new Version.parse('1.2.3');
   final v124 = new Version.parse('1.2.4');
   final v130 = new Version.parse('1.3.0');
   final v140 = new Version.parse('1.4.0');
   final v200 = new Version.parse('2.0.0');
   final v201 = new Version.parse('2.0.1');
   final v234 = new Version.parse('2.3.4');
   final v250 = new Version.parse('2.5.0');
   final v300 = new Version.parse('3.0.0');
-
   group('Version', () {
     test('none', () {
       expect(Version.none.toString(), equals('0.0.0'));
     });
-
     group('constructor', () {
       test('throws on negative numbers', () {
         throwsIllegalArg(() => new Version(-1, 1, 1));
         throwsIllegalArg(() => new Version(1, -1, 1));
         throwsIllegalArg(() => new Version(1, 1, -1));
       });
     });
-
     group('comparison', () {
-      // A correctly sorted list of versions.
       var versions = [
-        '1.0.0-alpha',
-        '1.0.0-alpha.1',
-        '1.0.0-beta.2',
-        '1.0.0-beta.11',
-        '1.0.0-rc.1',
-        '1.0.0-rc.1+build.1',
-        '1.0.0',
-        '1.0.0+0.3.7',
-        '1.3.7+build',
-        '1.3.7+build.2.b8f12d7',
-        '1.3.7+build.11.e0f985a',
-        '2.0.0',
-        '2.1.0',
-        '2.2.0',
-        '2.11.0',
-        '2.11.1'
-      ];
-
+          '1.0.0-alpha',
+          '1.0.0-alpha.1',
+          '1.0.0-beta.2',
+          '1.0.0-beta.11',
+          '1.0.0-rc.1',
+          '1.0.0-rc.1+build.1',
+          '1.0.0',
+          '1.0.0+0.3.7',
+          '1.3.7+build',
+          '1.3.7+build.2.b8f12d7',
+          '1.3.7+build.11.e0f985a',
+          '2.0.0',
+          '2.1.0',
+          '2.2.0',
+          '2.11.0',
+          '2.11.1'];
       test('compareTo()', () {
-        // Ensure that every pair of versions compares in the order that it
-        // appears in the list.
         for (var i = 0; i < versions.length; i++) {
           for (var j = 0; j < versions.length; j++) {
             var a = new Version.parse(versions[i]);
             var b = new Version.parse(versions[j]);
             var expectation = i.compareTo(j);
             expect(a.compareTo(b), equals(expectation));
           }
         }
       });
-
       test('operators', () {
         for (var i = 0; i < versions.length; i++) {
           for (var j = 0; j < versions.length; j++) {
             var a = new Version.parse(versions[i]);
             var b = new Version.parse(versions[j]);
             expect(a < b, equals(i < j));
             expect(a > b, equals(i > j));
             expect(a <= b, equals(i <= j));
             expect(a >= b, equals(i >= j));
             expect(a == b, equals(i == j));
             expect(a != b, equals(i != j));
           }
         }
       });
-
       test('equality', () {
         expect(new Version.parse('01.2.3'), equals(new Version.parse('1.2.3')));
         expect(new Version.parse('1.02.3'), equals(new Version.parse('1.2.3')));
         expect(new Version.parse('1.2.03'), equals(new Version.parse('1.2.3')));
-        expect(new Version.parse('1.2.3-01'),
+        expect(
+            new Version.parse('1.2.3-01'),
             equals(new Version.parse('1.2.3-1')));
-        expect(new Version.parse('1.2.3+01'),
+        expect(
+            new Version.parse('1.2.3+01'),
             equals(new Version.parse('1.2.3+1')));
       });
     });
-
     test('allows()', () {
       expect(v123.allows(v123), isTrue);
       expect(v123.allows(v114), isFalse);
       expect(v123.allows(v124), isFalse);
     });
-
     test('intersect()', () {
-      // Intersecting the same version returns the version.
       expect(v123.intersect(v123), equals(v123));
-
-      // Intersecting a different version allows no versions.
       expect(v123.intersect(v114).isEmpty, isTrue);
-
-      // Intersecting a range returns the version if the range allows it.
-      expect(v123.intersect(new VersionRange(min: v114, max: v124)),
+      expect(
+          v123.intersect(new VersionRange(min: v114, max: v124)),
           equals(v123));
-
-      // Intersecting a range allows no versions if the range doesn't allow it.
-      expect(v114.intersect(new VersionRange(min: v123, max: v124)).isEmpty,
+      expect(
+          v114.intersect(new VersionRange(min: v123, max: v124)).isEmpty,
           isTrue);
     });
-
     test('isEmpty', () {
       expect(v123.isEmpty, isFalse);
     });
-
     test('nextMajor', () {
       expect(v123.nextMajor, equals(v200));
       expect(v114.nextMajor, equals(v200));
       expect(v200.nextMajor, equals(v300));
-
-      // Ignores pre-release if not on a major version.
       expect(new Version.parse('1.2.3-dev').nextMajor, equals(v200));
-
-      // Just removes it if on a major version.
       expect(new Version.parse('2.0.0-dev').nextMajor, equals(v200));
-
-      // Strips build suffix.
       expect(new Version.parse('1.2.3+patch').nextMajor, equals(v200));
     });
-
     test('nextMinor', () {
       expect(v123.nextMinor, equals(v130));
       expect(v130.nextMinor, equals(v140));
-
-      // Ignores pre-release if not on a minor version.
       expect(new Version.parse('1.2.3-dev').nextMinor, equals(v130));
-
-      // Just removes it if on a minor version.
       expect(new Version.parse('1.3.0-dev').nextMinor, equals(v130));
-
-      // Strips build suffix.
       expect(new Version.parse('1.2.3+patch').nextMinor, equals(v130));
     });
-
     test('nextPatch', () {
       expect(v123.nextPatch, equals(v124));
       expect(v200.nextPatch, equals(v201));
-
-      // Just removes pre-release version if present.
       expect(new Version.parse('1.2.4-dev').nextPatch, equals(v124));
-
-      // Strips build suffix.
       expect(new Version.parse('1.2.3+patch').nextPatch, equals(v124));
     });
-
     test('parse()', () {
       expect(new Version.parse('0.0.0'), equals(new Version(0, 0, 0)));
       expect(new Version.parse('12.34.56'), equals(new Version(12, 34, 56)));
-
-      expect(new Version.parse('1.2.3-alpha.1'), equals(
-          new Version(1, 2, 3, pre: 'alpha.1')));
-      expect(new Version.parse('1.2.3-x.7.z-92'), equals(
-          new Version(1, 2, 3, pre: 'x.7.z-92')));
-
-      expect(new Version.parse('1.2.3+build.1'), equals(
-          new Version(1, 2, 3, build: 'build.1')));
-      expect(new Version.parse('1.2.3+x.7.z-92'), equals(
-          new Version(1, 2, 3, build: 'x.7.z-92')));
-
-      expect(new Version.parse('1.0.0-rc-1+build-1'), equals(
-          new Version(1, 0, 0, pre: 'rc-1', build: 'build-1')));
-
+      expect(
+          new Version.parse('1.2.3-alpha.1'),
+          equals(new Version(1, 2, 3, pre: 'alpha.1')));
+      expect(
+          new Version.parse('1.2.3-x.7.z-92'),
+          equals(new Version(1, 2, 3, pre: 'x.7.z-92')));
+      expect(
+          new Version.parse('1.2.3+build.1'),
+          equals(new Version(1, 2, 3, build: 'build.1')));
+      expect(
+          new Version.parse('1.2.3+x.7.z-92'),
+          equals(new Version(1, 2, 3, build: 'x.7.z-92')));
+      expect(
+          new Version.parse('1.0.0-rc-1+build-1'),
+          equals(new Version(1, 0, 0, pre: 'rc-1', build: 'build-1')));
       expect(() => new Version.parse('1.0'), throwsFormatException);
       expect(() => new Version.parse('1.2.3.4'), throwsFormatException);
       expect(() => new Version.parse('1234'), throwsFormatException);
       expect(() => new Version.parse('-2.3.4'), throwsFormatException);
       expect(() => new Version.parse('1.3-pre'), throwsFormatException);
       expect(() => new Version.parse('1.3+build'), throwsFormatException);
       expect(() => new Version.parse('1.3+bu?!3ild'), throwsFormatException);
     });
-
     test('toString()', () {
       expect(new Version(0, 0, 0).toString(), equals('0.0.0'));
       expect(new Version(12, 34, 56).toString(), equals('12.34.56'));
-
-      expect(new Version(1, 2, 3, pre: 'alpha.1').toString(), equals(
-          '1.2.3-alpha.1'));
-      expect(new Version(1, 2, 3, pre: 'x.7.z-92').toString(), equals(
-          '1.2.3-x.7.z-92'));
-
-      expect(new Version(1, 2, 3, build: 'build.1').toString(), equals(
-          '1.2.3+build.1'));
-      expect(new Version(1, 2, 3, pre: 'pre', build: 'bui').toString(), equals(
-          '1.2.3-pre+bui'));
+      expect(
+          new Version(1, 2, 3, pre: 'alpha.1').toString(),
+          equals('1.2.3-alpha.1'));
+      expect(
+          new Version(1, 2, 3, pre: 'x.7.z-92').toString(),
+          equals('1.2.3-x.7.z-92'));
+      expect(
+          new Version(1, 2, 3, build: 'build.1').toString(),
+          equals('1.2.3+build.1'));
+      expect(
+          new Version(1, 2, 3, pre: 'pre', build: 'bui').toString(),
+          equals('1.2.3-pre+bui'));
     });
   });
-
   group('VersionRange', () {
     group('constructor', () {
       test('takes a min and max', () {
         var range = new VersionRange(min: v123, max: v124);
         expect(range.isAny, isFalse);
         expect(range.min, equals(v123));
         expect(range.max, equals(v124));
       });
-
       test('allows omitting max', () {
         var range = new VersionRange(min: v123);
         expect(range.isAny, isFalse);
         expect(range.min, equals(v123));
         expect(range.max, isNull);
       });
-
       test('allows omitting min and max', () {
         var range = new VersionRange();
         expect(range.isAny, isTrue);
         expect(range.min, isNull);
         expect(range.max, isNull);
       });
-
       test('takes includeMin', () {
         var range = new VersionRange(min: v123, includeMin: true);
         expect(range.includeMin, isTrue);
       });
-
       test('includeMin defaults to false if omitted', () {
         var range = new VersionRange(min: v123);
         expect(range.includeMin, isFalse);
       });
-
       test('takes includeMax', () {
         var range = new VersionRange(max: v123, includeMax: true);
         expect(range.includeMax, isTrue);
       });
-
       test('includeMax defaults to false if omitted', () {
         var range = new VersionRange(max: v123);
         expect(range.includeMax, isFalse);
       });
-
       test('throws if min > max', () {
         throwsIllegalArg(() => new VersionRange(min: v124, max: v123));
       });
     });
-
     group('allows()', () {
       test('version must be greater than min', () {
         var range = new VersionRange(min: v123);
-
         expect(range.allows(new Version.parse('1.2.2')), isFalse);
         expect(range.allows(new Version.parse('1.2.3')), isFalse);
         expect(range.allows(new Version.parse('1.3.3')), isTrue);
         expect(range.allows(new Version.parse('2.3.3')), isTrue);
       });
-
       test('version must be min or greater if includeMin', () {
         var range = new VersionRange(min: v123, includeMin: true);
-
         expect(range.allows(new Version.parse('1.2.2')), isFalse);
         expect(range.allows(new Version.parse('1.2.3')), isTrue);
         expect(range.allows(new Version.parse('1.3.3')), isTrue);
         expect(range.allows(new Version.parse('2.3.3')), isTrue);
       });
-
       test('pre-release versions of inclusive min are excluded', () {
         var range = new VersionRange(min: v123, includeMin: true);
-
         expect(range.allows(new Version.parse('1.2.3-dev')), isFalse);
         expect(range.allows(new Version.parse('1.2.4-dev')), isTrue);
       });
-
       test('version must be less than max', () {
         var range = new VersionRange(max: v234);
-
         expect(range.allows(new Version.parse('2.3.3')), isTrue);
         expect(range.allows(new Version.parse('2.3.4')), isFalse);
         expect(range.allows(new Version.parse('2.4.3')), isFalse);
       });
-
       test('pre-release versions of non-pre-release max are excluded', () {
         var range = new VersionRange(max: v234);
-
         expect(range.allows(new Version.parse('2.3.3')), isTrue);
         expect(range.allows(new Version.parse('2.3.4-dev')), isFalse);
         expect(range.allows(new Version.parse('2.3.4')), isFalse);
       });
-
       test('pre-release versions of pre-release max are included', () {
         var range = new VersionRange(max: new Version.parse('2.3.4-dev.2'));
-
         expect(range.allows(new Version.parse('2.3.4-dev.1')), isTrue);
         expect(range.allows(new Version.parse('2.3.4-dev.2')), isFalse);
         expect(range.allows(new Version.parse('2.3.4-dev.3')), isFalse);
       });
-
       test('version must be max or less if includeMax', () {
         var range = new VersionRange(min: v123, max: v234, includeMax: true);
-
         expect(range.allows(new Version.parse('2.3.3')), isTrue);
         expect(range.allows(new Version.parse('2.3.4')), isTrue);
         expect(range.allows(new Version.parse('2.4.3')), isFalse);
-
-        // Pre-releases of the max are allowed.
         expect(range.allows(new Version.parse('2.3.4-dev')), isTrue);
       });
-
       test('has no min if one was not set', () {
         var range = new VersionRange(max: v123);
-
         expect(range.allows(new Version.parse('0.0.0')), isTrue);
         expect(range.allows(new Version.parse('1.2.3')), isFalse);
       });
-
       test('has no max if one was not set', () {
         var range = new VersionRange(min: v123);
-
         expect(range.allows(new Version.parse('1.2.3')), isFalse);
         expect(range.allows(new Version.parse('1.3.3')), isTrue);
         expect(range.allows(new Version.parse('999.3.3')), isTrue);
       });
-
       test('allows any version if there is no min or max', () {
         var range = new VersionRange();
-
         expect(range.allows(new Version.parse('0.0.0')), isTrue);
         expect(range.allows(new Version.parse('999.99.9')), isTrue);
       });
     });
-
     group('intersect()', () {
       test('two overlapping ranges', () {
         var a = new VersionRange(min: v123, max: v250);
         var b = new VersionRange(min: v200, max: v300);
         var intersect = a.intersect(b);
         expect(intersect.min, equals(v200));
         expect(intersect.max, equals(v250));
         expect(intersect.includeMin, isFalse);
         expect(intersect.includeMax, isFalse);
       });
-
       test('a non-overlapping range allows no versions', () {
         var a = new VersionRange(min: v114, max: v124);
         var b = new VersionRange(min: v200, max: v250);
         expect(a.intersect(b).isEmpty, isTrue);
       });
-
       test('adjacent ranges allow no versions if exclusive', () {
         var a = new VersionRange(min: v114, max: v124, includeMax: false);
         var b = new VersionRange(min: v124, max: v200, includeMin: true);
         expect(a.intersect(b).isEmpty, isTrue);
       });
-
       test('adjacent ranges allow version if inclusive', () {
         var a = new VersionRange(min: v114, max: v124, includeMax: true);
         var b = new VersionRange(min: v124, max: v200, includeMin: true);
         expect(a.intersect(b), equals(v124));
       });
-
       test('with an open range', () {
         var open = new VersionRange();
         var a = new VersionRange(min: v114, max: v124);
         expect(open.intersect(open), equals(open));
         expect(a.intersect(open), equals(a));
       });
-
       test('returns the version if the range allows it', () {
-        expect(new VersionRange(min: v114, max: v124).intersect(v123),
+        expect(
+            new VersionRange(min: v114, max: v124).intersect(v123),
             equals(v123));
-        expect(new VersionRange(min: v123, max: v124).intersect(v114).isEmpty,
+        expect(
+            new VersionRange(min: v123, max: v124).intersect(v114).isEmpty,
             isTrue);
       });
     });
-
     test('isEmpty', () {
       expect(new VersionRange().isEmpty, isFalse);
       expect(new VersionRange(min: v123, max: v124).isEmpty, isFalse);
     });
   });
-
   group('VersionConstraint', () {
     test('any', () {
       expect(VersionConstraint.any.isAny, isTrue);
-      expect(VersionConstraint.any, allows([
-        new Version.parse('0.0.0-blah'),
-        new Version.parse('1.2.3'),
-        new Version.parse('12345.678.90')]));
+      expect(
+          VersionConstraint.any,
+          allows(
+              [
+                  new Version.parse('0.0.0-blah'),
+                  new Version.parse('1.2.3'),
+                  new Version.parse('12345.678.90')]));
     });
-
     test('empty', () {
       expect(VersionConstraint.empty.isEmpty, isTrue);
       expect(VersionConstraint.empty.isAny, isFalse);
-      expect(VersionConstraint.empty, doesNotAllow([
-        new Version.parse('0.0.0-blah'),
-        new Version.parse('1.2.3'),
-        new Version.parse('12345.678.90')]));
+      expect(
+          VersionConstraint.empty,
+          doesNotAllow(
+              [
+                  new Version.parse('0.0.0-blah'),
+                  new Version.parse('1.2.3'),
+                  new Version.parse('12345.678.90')]));
     });
-
     group('parse()', () {
       test('parses an exact version', () {
         var constraint = new VersionConstraint.parse('1.2.3-alpha');
         expect(constraint is Version, isTrue);
         expect(constraint, equals(new Version(1, 2, 3, pre: 'alpha')));
       });
-
       test('parses "any"', () {
         var constraint = new VersionConstraint.parse('any');
         expect(constraint is VersionConstraint, isTrue);
-        expect(constraint, allows([
-            new Version.parse('0.0.0'),
-            new Version.parse('1.2.3'),
-            new Version.parse('12345.678.90')]));
+        expect(
+            constraint,
+            allows(
+                [
+                    new Version.parse('0.0.0'),
+                    new Version.parse('1.2.3'),
+                    new Version.parse('12345.678.90')]));
       });
-
       test('parses a ">" minimum version', () {
-        expect(new VersionConstraint.parse('>1.2.3'), allows([
-            new Version.parse('1.2.3+foo'),
-            new Version.parse('1.2.4')]));
-        expect(new VersionConstraint.parse('>1.2.3'), doesNotAllow([
-            new Version.parse('1.2.1'),
-            new Version.parse('1.2.3-build'),
-            new Version.parse('1.2.3')]));
+        expect(
+            new VersionConstraint.parse('>1.2.3'),
+            allows([new Version.parse('1.2.3+foo'), new Version.parse('1.2.4')]));
+        expect(
+            new VersionConstraint.parse('>1.2.3'),
+            doesNotAllow(
+                [
+                    new Version.parse('1.2.1'),
+                    new Version.parse('1.2.3-build'),
+                    new Version.parse('1.2.3')]));
       });
-
       test('parses a ">=" minimum version', () {
-        expect(new VersionConstraint.parse('>=1.2.3'), allows([
-            new Version.parse('1.2.3'),
-            new Version.parse('1.2.3+foo'),
-            new Version.parse('1.2.4')]));
-        expect(new VersionConstraint.parse('>=1.2.3'), doesNotAllow([
-            new Version.parse('1.2.1'),
-            new Version.parse('1.2.3-build')]));
+        expect(
+            new VersionConstraint.parse('>=1.2.3'),
+            allows(
+                [
+                    new Version.parse('1.2.3'),
+                    new Version.parse('1.2.3+foo'),
+                    new Version.parse('1.2.4')]));
+        expect(
+            new VersionConstraint.parse('>=1.2.3'),
+            doesNotAllow([new Version.parse('1.2.1'), new Version.parse('1.2.3-build')]));
       });
-
       test('parses a "<" maximum version', () {
-        expect(new VersionConstraint.parse('<1.2.3'), allows([
-            new Version.parse('1.2.1'),
-            new Version.parse('1.2.2+foo')]));
-        expect(new VersionConstraint.parse('<1.2.3'), doesNotAllow([
-            new Version.parse('1.2.3'),
-            new Version.parse('1.2.3+foo'),
-            new Version.parse('1.2.4')]));
+        expect(
+            new VersionConstraint.parse('<1.2.3'),
+            allows([new Version.parse('1.2.1'), new Version.parse('1.2.2+foo')]));
+        expect(
+            new VersionConstraint.parse('<1.2.3'),
+            doesNotAllow(
+                [
+                    new Version.parse('1.2.3'),
+                    new Version.parse('1.2.3+foo'),
+                    new Version.parse('1.2.4')]));
       });
-
       test('parses a "<=" maximum version', () {
-        expect(new VersionConstraint.parse('<=1.2.3'), allows([
-            new Version.parse('1.2.1'),
-            new Version.parse('1.2.3-build'),
-            new Version.parse('1.2.3')]));
-        expect(new VersionConstraint.parse('<=1.2.3'), doesNotAllow([
-            new Version.parse('1.2.3+foo'),
-            new Version.parse('1.2.4')]));
+        expect(
+            new VersionConstraint.parse('<=1.2.3'),
+            allows(
+                [
+                    new Version.parse('1.2.1'),
+                    new Version.parse('1.2.3-build'),
+                    new Version.parse('1.2.3')]));
+        expect(
+            new VersionConstraint.parse('<=1.2.3'),
+            doesNotAllow([new Version.parse('1.2.3+foo'), new Version.parse('1.2.4')]));
       });
-
       test('parses a series of space-separated constraints', () {
         var constraint = new VersionConstraint.parse('>1.0.0 >=1.2.3 <1.3.0');
-        expect(constraint, allows([
-            new Version.parse('1.2.3'),
-            new Version.parse('1.2.5')]));
-        expect(constraint, doesNotAllow([
-            new Version.parse('1.2.3-pre'),
-            new Version.parse('1.3.0'),
-            new Version.parse('3.4.5')]));
+        expect(
+            constraint,
+            allows([new Version.parse('1.2.3'), new Version.parse('1.2.5')]));
+        expect(
+            constraint,
+            doesNotAllow(
+                [
+                    new Version.parse('1.2.3-pre'),
+                    new Version.parse('1.3.0'),
+                    new Version.parse('3.4.5')]));
       });
-
       test('ignores whitespace around operators', () {
         var constraint = new VersionConstraint.parse(' >1.0.0>=1.2.3 < 1.3.0');
-        expect(constraint, allows([
-            new Version.parse('1.2.3'),
-            new Version.parse('1.2.5')]));
-        expect(constraint, doesNotAllow([
-            new Version.parse('1.2.3-pre'),
-            new Version.parse('1.3.0'),
-            new Version.parse('3.4.5')]));
+        expect(
+            constraint,
+            allows([new Version.parse('1.2.3'), new Version.parse('1.2.5')]));
+        expect(
+            constraint,
+            doesNotAllow(
+                [
+                    new Version.parse('1.2.3-pre'),
+                    new Version.parse('1.3.0'),
+                    new Version.parse('3.4.5')]));
       });
-
       test('does not allow "any" to be mixed with other constraints', () {
-        expect(() => new VersionConstraint.parse('any 1.0.0'),
+        expect(
+            () => new VersionConstraint.parse('any 1.0.0'),
             throwsFormatException);
       });
-
       test('throws FormatException on a bad string', () {
         var bad = [
-           "", "   ",               // Empty string.
-           "foo",                   // Bad text.
-           ">foo",                  // Bad text after operator.
-           "1.0.0 foo", "1.0.0foo", // Bad text after version.
-           "anything",              // Bad text after "any".
-           "<>1.0.0",               // Multiple operators.
-           "1.0.0<"                 // Trailing operator.
-        ];
-
+            "",
+            "   ",
+            "foo",
+            ">foo",
+            "1.0.0 foo",
+            "1.0.0foo",
+            "anything",
+            "<>1.0.0",
+            "1.0.0<"];
         for (var text in bad) {
-          expect(() => new VersionConstraint.parse(text),
+          expect(
+              () => new VersionConstraint.parse(text),
               throwsFormatException);
         }
       });
     });
   });
 }
-
 class VersionConstraintMatcher implements Matcher {
   final List<Version> _expected;
   final bool _allow;
-
   VersionConstraintMatcher(this._expected, this._allow);
-
-  bool matches(item, Map matchState) => (item is VersionConstraint) &&
-      _expected.every((version) => item.allows(version) == _allow);
-
+  bool matches(item, Map matchState) =>
+      (item is VersionConstraint) &&
+          _expected.every((version) => item.allows(version) == _allow);
   Description describe(Description description) =>
       description.add(' ${_allow ? "allows" : "does not allow"} versions');
-
   Description describeMismatch(item, Description mismatchDescription,
       Map matchState, bool verbose) {
     if (item is! VersionConstraint) {
       mismatchDescription.add('was not a VersionConstraint');
       return mismatchDescription;
     }
-
     bool first = true;
     for (var version in _expected) {
       if (item.allows(version) != _allow) {
         if (first) {
           if (_allow) {
             mismatchDescription.addDescriptionOf(item).add('did not allow ');
           } else {
             mismatchDescription.addDescriptionOf(item).add('allowed ');
           }
         } else {
           mismatchDescription.add(' and ');
         }
         first = false;
-
         mismatchDescription.add(version.toString());
       }
     }
-
     return mismatchDescription;
   }
 }
-
 Matcher allows(List<Version> versions) =>
     new VersionConstraintMatcher(versions, true);
-
 Matcher doesNotAllow(List<Version> versions) =>
     new VersionConstraintMatcher(versions, false);
-
 throwsIllegalArg(function) {
   expect(function, throwsA((e) => e is ArgumentError));
 }