Fresh drop of analyzer-experimental.

pkg/analyzer-experimental/lib/src/generated/java_junit.dart

 library java.junit;
 
 import 'package:unittest/unittest.dart' hide fail;
 import 'package:unittest/unittest.dart' as _ut show fail;
 
 
 class JUnitTestCase {
   void setUp() {}
   void tearDown() {}
   static void fail(String msg) {
@@ skipping 16 matching lines @@
   }
   static void assertNotNull(x) {
     expect(x, isNotNull);
   }
   static void assertEquals(expected, actual) {
     expect(actual, equals(expected));
   }
   static void assertEqualsMsg(String msg, expected, actual) {
     expect(actual, equalsMsg(msg, expected));
   }
+  static void assertSame(expected, actual) {
+    expect(actual, same(expected));
+  }
 }
 
 runJUnitTest(testInstance, Function testFunction) {
   testInstance.setUp();
   try {
     testFunction();
   } finally {
     testInstance.tearDown();
   }
 }
@@ skipping 53 matching lines @@
     return item == false;
   }
   Description describe(Description mismatchDescription) {
     return mismatchDescription.replace(msg);
   }
   Description describeMismatch(item, Description mismatchDescription,
                                MatchState matchState, bool verbose) {
     return mismatchDescription.replace(msg).add(" $item is not false");
   }
 }