Switch 'analyzer' to 'package:test' and test_reflective_loader ^0.1.0.

pkg/analyzer/test/src/summary/api_signature_test.dart

Index: pkg/analyzer/test/src/summary/api_signature_test.dart
diff --git a/pkg/analyzer/test/src/summary/api_signature_test.dart b/pkg/analyzer/test/src/summary/api_signature_test.dart
index a8c3459ce7f2ac0da3b22fb67a63685752dd6ef6..eb8700b05ee7e944378e120dffae6fba629a71e2 100644
--- a/pkg/analyzer/test/src/summary/api_signature_test.dart
+++ b/pkg/analyzer/test/src/summary/api_signature_test.dart
@@ -8,12 +8,13 @@ import 'package:analyzer/src/summary/api_signature.dart';
 import 'package:analyzer/src/summary/format.dart';
 import 'package:convert/convert.dart';
 import 'package:crypto/crypto.dart';
+import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
-import 'package:unittest/unittest.dart';
 
 main() {
-  groupSep = ' | ';
-  defineReflectiveTests(ApiSignatureTest);
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ApiSignatureTest);
+  });
 }
 
 @reflectiveTest