add diagnostics
diff --git a/test/pub_cache_test.dart b/test/pub_cache_test.dart
index a56e2ca..ec96991 100644
--- a/test/pub_cache_test.dart
+++ b/test/pub_cache_test.dart
@@ -13,7 +13,10 @@
 void main() {
   // We need at least one activated application for our test suite.
   if (new PubCache().getGlobalApplications().isEmpty) {
-    Process.runSync('pub', ['global', 'activate', 'dart_coveralls']);
+    ProcessResult result = Process.runSync('pub', ['global', 'activate', 'dart_coveralls']);
+    print(result.exitCode);
+    print(result.stdout);
+    print(result.stderr);
   }
 
   defineTests();