Spelling a

pkg/testing/lib/src/chain.dart

Index: pkg/testing/lib/src/chain.dart
diff --git a/pkg/testing/lib/src/chain.dart b/pkg/testing/lib/src/chain.dart
index 6496a81b3762acdee089e73e239b9aaf2cac20b4..d51fdb27302ebeba96023adc4ec0adbad2c895a2 100644
--- a/pkg/testing/lib/src/chain.dart
+++ b/pkg/testing/lib/src/chain.dart
@@ -149,7 +149,7 @@ abstract class ChainContext {
       /// If `step.isAsync` is true, the corresponding step is said to be
       /// asynchronous.
       ///
-      /// If a step is asynchrouns the future returned from this function will
+      /// If a step is asynchronous the future returned from this function will
       /// complete after the first asynchronous step is scheduled.  This
       /// allows us to start processing the next test while an external process
       /// completes as steps can be interleaved. To ensure all steps are