State-carrying context API.

pkg/analyzer/test/src/context/context_test.dart

Index: pkg/analyzer/test/src/context/context_test.dart
diff --git a/pkg/analyzer/test/src/context/context_test.dart b/pkg/analyzer/test/src/context/context_test.dart
index 554bc0a544c6e88655e2925e93789702ebd3783c..12f6fa7873ffd4f9a54b2432b4f91814c04b9290 100644
--- a/pkg/analyzer/test/src/context/context_test.dart
+++ b/pkg/analyzer/test/src/context/context_test.dart
@@ -649,6 +649,15 @@ main() {}''');
     });
   }
 
+  void test_configurationData() {
+    var key = new ResultDescriptor('test_key', '');
+    var testData = ['test', 'data'];
+    context.setConfigurationData(key, testData);
+    expect(context.getConfigurationData(key), testData);
+    var unusedKey = new ResultDescriptor('unused_key', '');
+    expect(context.getConfigurationData(unusedKey), null);
+  }
+
   void test_dispose() {
     expect(context.isDisposed, isFalse);
     context.dispose();