Run pub tests against older versions of barback.

third_party/pkg/barback-0.13.0/test/transformer_test.dart

Index: third_party/pkg/barback-0.13.0/test/transformer_test.dart
diff --git a/pkg/barback/test/transformer_test.dart b/third_party/pkg/barback-0.13.0/test/transformer_test.dart
similarity index 85%
copy from pkg/barback/test/transformer_test.dart
copy to third_party/pkg/barback-0.13.0/test/transformer_test.dart
index 5ff96c8253879480b6ca53aca41187e4fcbaccee..3eb83a16dab0b9e2fd97d1b64e10494dfd3352e0 100644
--- a/pkg/barback/test/transformer_test.dart
+++ b/third_party/pkg/barback-0.13.0/test/transformer_test.dart
@@ -7,7 +7,6 @@ library barback.test.transformer_test;
 import 'dart:async';
 
 import 'package:barback/barback.dart';
-import 'package:barback/src/utils.dart';
 import 'package:unittest/unittest.dart';
 
 import 'utils.dart';
@@ -18,20 +17,25 @@ main() {
   group("isPrimary", () {
     test("defaults to allowedExtensions", () {
       var transformer = new ExtensionTransformer(".txt .bin");
-      expect(transformer.isPrimary(new AssetId("pkg", "foo.txt")), isTrue);
+      expect(transformer.isPrimary(new AssetId("pkg", "foo.txt")),
+          completion(isTrue));
 
-      expect(transformer.isPrimary(new AssetId("pkg", "foo.bin")), isTrue);
+      expect(transformer.isPrimary(new AssetId("pkg", "foo.bin")),
+          completion(isTrue));
 
-      expect(transformer.isPrimary(new AssetId("pkg", "foo.nottxt")), isFalse);
+      expect(transformer.isPrimary(new AssetId("pkg", "foo.nottxt")),
+          completion(isFalse));
     });
 
     test("supports multi-level extensions with allowedExtensions", () {
       var transformer = new ExtensionTransformer(".dart.js");
-      expect(transformer.isPrimary(new AssetId("pkg", "foo.dart.js")), isTrue);
+      expect(transformer.isPrimary(new AssetId("pkg", "foo.dart.js")),
+          completion(isTrue));
 
-      expect(transformer.isPrimary(new AssetId("pkg", "foo.js")), isFalse);
-
-      expect(transformer.isPrimary(new AssetId("pkg", "foo.dart")), isFalse);
+      expect(transformer.isPrimary(new AssetId("pkg", "foo.js")),
+          completion(isFalse));
+      expect(transformer.isPrimary(new AssetId("pkg", "foo.dart")),
+          completion(isFalse));
     });
 
     test("throws an error for extensions without periods", () {
@@ -40,11 +44,14 @@ main() {
 
     test("allows all files if allowedExtensions is not overridden", () {
       var transformer = new MockTransformer();
-      expect(transformer.isPrimary(new AssetId("pkg", "foo.txt")), isTrue);
+      expect(transformer.isPrimary(new AssetId("pkg", "foo.txt")),
+          completion(isTrue));
 
-      expect(transformer.isPrimary(new AssetId("pkg", "foo.bin")), isTrue);
+      expect(transformer.isPrimary(new AssetId("pkg", "foo.bin")),
+          completion(isTrue));
 
-      expect(transformer.isPrimary(new AssetId("pkg", "anything")), isTrue);
+      expect(transformer.isPrimary(new AssetId("pkg", "anything")),
+          completion(isTrue));
     });
   });
 }