dartfmt, only test dartfmt on dev (dart-lang/pubspec_parse#50)

Run tests on 2.2.0

pkgs/pubspec_parse/.travis.yml

diff --git a/pkgs/pubspec_parse/.travis.yml b/pkgs/pubspec_parse/.travis.yml
index 536ccee..ccb1caf 100644
--- a/pkgs/pubspec_parse/.travis.yml
+++ b/pkgs/pubspec_parse/.travis.yml
@@ -1,15 +1,18 @@
 language: dart
 
 dart:
+  - 2.2.0
   - dev
 
 dart_task:
   - test: -x presubmit-only
   - test: --run-skipped -t presubmit-only
-  - dartfmt
 
 matrix:
   include:
+    # Only validate formatting using the dev release
+    - dart: dev
+      dart_task: dartfmt
     - dart: dev
       dart_task:
         dartanalyzer: --fatal-infos --fatal-warnings .

pkgs/pubspec_parse/test/test_utils.dart

diff --git a/pkgs/pubspec_parse/test/test_utils.dart b/pkgs/pubspec_parse/test/test_utils.dart
index b61cdbd..00196bb 100644
--- a/pkgs/pubspec_parse/test/test_utils.dart
+++ b/pkgs/pubspec_parse/test/test_utils.dart
@@ -104,10 +104,10 @@
 }) =>
     expect(
       () => parse(
-            content,
-            lenient: lenient,
-            quietOnError: true,
-            skipTryPub: skipTryPub,
-          ),
+        content,
+        lenient: lenient,
+        quietOnError: true,
+        skipTryPub: skipTryPub,
+      ),
       _throwsParsedYamlException(expectedError),
     );