Quick Fix for an undefined class in is/as expressions.

pkg/analysis_server/test/services/correction/fix_test.dart

Index: pkg/analysis_server/test/services/correction/fix_test.dart
diff --git a/pkg/analysis_server/test/services/correction/fix_test.dart b/pkg/analysis_server/test/services/correction/fix_test.dart
index d833738ee50c86151c2ca5b77d185caccb841560..9e33386efc5f7405bc9a2f13ba4bc4b408374f2a 100644
--- a/pkg/analysis_server/test/services/correction/fix_test.dart
+++ b/pkg/analysis_server/test/services/correction/fix_test.dart
@@ -1846,6 +1846,21 @@ main() {
 ''');
   }
 
+  void test_importLibrarySdk_withType_AsExpression() {
+    _indexTestUnit('''
+main(p) {
+  p as Future;
+}
+''');
+    assertHasFix(FixKind.IMPORT_LIBRARY_SDK, '''
+import 'dart:async';
+
+main(p) {
+  p as Future;
+}
+''');
+  }
+
   void test_importLibrarySdk_withType_invocationTarget() {
     _indexTestUnit('''
 main() {
@@ -1861,6 +1876,21 @@ main() {
 ''');
   }
 
+  void test_importLibrarySdk_withType_IsExpression() {
+    _indexTestUnit('''
+main(p) {
+  p is Future;
+}
+''');
+    assertHasFix(FixKind.IMPORT_LIBRARY_SDK, '''
+import 'dart:async';
+
+main(p) {
+  p is Future;
+}
+''');
+  }
+
   void test_importLibrarySdk_withType_typeAnnotation() {
     _indexTestUnit('''
 main() {