propcheck: Making it Dart 2 and Dart 1 compatible

Author: Stargator

example/demolib.dart

@@ -5,7 +5,7 @@
 
 library demolib;
 
-import 'package:collection/equality.dart';
+import 'package:collection/collection.dart';
 
 bool listEquals(List xs, List ys) => const ListEquality().equals(xs, ys);
 List reverse(List xs) => xs.reversed.toList();

pubspec.yaml

@@ -8,5 +8,5 @@ environment:
 dependencies:
   enumerators: '>=0.6.0 <0.7.0'
 dev_dependencies:
-  collection: '>=0.9.3 <0.10.0'
-  unittest: '>=0.9.0 <1.0.0'
+  collection: '>=0.9.3 <1.15.0'
+  test: '>=0.9.0 <=1.3.0'

test/quickcheck_test.dart

@@ -23,7 +23,7 @@ void falseTriggersException() {
     return false;
   }
   expect(() => new QuickCheck(quiet: true).check(forall(c.ints, test)),
-         throwsA(new isInstanceOf<String>()));
+         throwsA(const TypeMatcher<String>()));
 }
 
 void quickCheckHonorsMaxSize() {

test/smallcheck_test.dart

@@ -22,7 +22,7 @@ void falseTriggersException() {
     return false;
   }
   expect(() => new SmallCheck(quiet: true).check(forall(c.ints, test)),
-         throwsA(new isInstanceOf<String>()));
+         throwsA(const TypeMatcher<String>()));
 }
 
 void smallCheckIsExhaustive() {