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packages/initialize/test/deferred_library_test.dart

+// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+@initializeTracker
+library initialize.deferred_library_test;
+
+import 'foo.dart' deferred as foo;
+import 'package:initialize/src/initialize_tracker.dart';
+import 'package:initialize/initialize.dart';
+import 'package:unittest/unittest.dart';
+import 'package:unittest/compact_vm_config.dart';
+
+main() {
+  useCompactVMConfiguration();
+
+  test('annotations can be loaded lazily', () {
+    // Initialize everything not in deferred imports.
+    return run().then((_) {
+      expect(InitializeTracker.seen.length, 1);
+
+      // Now load the foo library and re-run initializers.
+      return foo.loadLibrary().then((_) => run()).then((_) {
+        expect(InitializeTracker.seen.length, 5);
+      });
+    });
+  });
+}