test for interpolation completions

pkg/analysis_server/test/services/completion/completion_test_util.dart

 // Copyright (c) 2014, 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.
 
 library test.services.completion.util;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/protocol.dart' as protocol show Element,
     ElementKind;
@@ skipping 2197 matching lines @@
     return computeFull((bool result) {
       expect(request.replacementOffset, completionOffset);
       expect(request.replacementLength, 0);
       assertSuggestInvocationGetter('length', 'int');
       assertNotSuggested('name');
       assertNotSuggested('Object');
       assertNotSuggested('==');
     });
   }
 
+  test_InterpolationExpression_prefix_selector2() {
+    // SimpleIdentifier  PrefixedIdentifier  InterpolationExpression
+    addTestSource('main() {String name; print("hello \$name.^");}');
+    computeFast();
+    return computeFull((bool result) {
+      assertNoSuggestions();
+    });
+  }
+
   test_InterpolationExpression_prefix_target() {
     // SimpleIdentifier  PrefixedIdentifier  InterpolationExpression
     addTestSource('main() {String name; print("hello \${nam^e.length}");}');
     computeFast();
     return computeFull((bool result) {
       assertSuggestLocalVariable('name', 'String');
       // top level results are partially filtered
       //assertSuggestImportedClass('Object');
       assertNotSuggested('length');
     });
@@ skipping 763 matching lines @@
       assertNotSuggested('bar2');
       assertNotSuggested('_B');
       assertSuggestLocalClass('Y');
       assertSuggestLocalClass('C');
       assertSuggestLocalVariable('f', null);
       assertNotSuggested('x');
       assertNotSuggested('e');
     });
   }
 }