Try to restore 'package:' URI reference to the file being moved.

pkg/analysis_server/test/services/refactoring/move_file_test.dart

Index: pkg/analysis_server/test/services/refactoring/move_file_test.dart
diff --git a/pkg/analysis_server/test/services/refactoring/move_file_test.dart b/pkg/analysis_server/test/services/refactoring/move_file_test.dart
index 9437e5d8b52673465c0a817b96991fb36e1473c8..0ff826b0ac78a0507ddc96bfe6f48987467286aa 100644
--- a/pkg/analysis_server/test/services/refactoring/move_file_test.dart
+++ b/pkg/analysis_server/test/services/refactoring/move_file_test.dart
@@ -8,9 +8,13 @@ import 'dart:async';
 
 import 'package:analysis_server/src/protocol.dart';
 import 'package:analysis_server/src/services/refactoring/refactoring.dart';
+import 'package:analyzer/file_system/file_system.dart';
+import 'package:analyzer/source/package_map_resolver.dart';
 import 'package:analyzer/src/generated/engine.dart';
+import 'package:analyzer/src/generated/source.dart';
 import 'package:unittest/unittest.dart';
 
+import '../../abstract_context.dart';
 import '../../reflective_tests.dart';
 import 'abstract_refactoring.dart';
 
@@ -98,6 +102,35 @@ import '22/new_name.dart';
     });
   }
 
+  test_importedLibrary_package() {
+    // configure packages
+    testFile = '/packages/my_pkg/aaa/test.dart';
+    File testFileRes = provider.newFile(testFile, '');
+    Map<String, List<Folder>> packageMap = {
+      'my_pkg': [provider.getResource('/packages/my_pkg')]
+    };
+    context.sourceFactory = new SourceFactory(
+        [
+            AbstractContextTest.SDK_RESOLVER,
+            resourceResolver,
+            new PackageMapUriResolver(provider, packageMap)]);
+    // do testing
+    String pathA = '/project/bin/a.dart';
+    addSource(pathA, '''
+import 'package:my_pkg/aaa/test.dart';
+''');
+    addTestSource('');
+    _performAnalysis();
+    // perform refactoring
+    _createRefactoring('/packages/my_pkg/bbb/ccc/new_name.dart');
+    return _assertSuccessfulRefactoring().then((_) {
+      assertFileChangeResult(pathA, '''
+import 'package:my_pkg/bbb/ccc/new_name.dart';
+''');
+      assertNoFileChange(testFile);
+    });
+  }
+
   test_importedLibrary_up() {
     String pathA = '/project/000/1111/a.dart';
     testFile = '/project/000/1111/22/test.dart';