suggest keywords in if expression

pkg/analysis_server/test/services/completion/keyword_contributor_test.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.dart.keyword;
 
 import 'package:analysis_server/src/protocol.dart';
 import 'package:analysis_server/src/services/completion/dart_completion_manager.dart';
 import 'package:analysis_server/src/services/completion/keyword_contributor.dart';
 import 'package:analyzer/src/generated/scanner.dart';
@@ skipping 628 matching lines @@
     expect(computeFast(), isTrue);
     assertSuggestKeywords(STMT_START_OUTSIDE_CLASS);
   }
 
   test_function_body_inUnit_async() {
     addTestSource('main() async {^}');
     expect(computeFast(), isTrue);
     assertSuggestKeywords(STMT_START_OUTSIDE_CLASS, pseudoKeywords: ['await']);
   }
 
+  test_if_expression_in_class() {
+    addTestSource('class A {foo() {if (^) }}');
+    expect(computeFast(), isTrue);
+    assertSuggestKeywords(EXPRESSION_START_INSTANCE);
+  }
+
+  test_if_expression_in_class2() {
+    addTestSource('class A {foo() {if (n^) }}');
+    expect(computeFast(), isTrue);
+    assertSuggestKeywords(EXPRESSION_START_INSTANCE);
+  }
+
+  test_if_expression_in_function() {
+    addTestSource('foo() {if (^) }');
+    expect(computeFast(), isTrue);
+    assertSuggestKeywords(EXPRESSION_START_NO_INSTANCE);
+  }
+
+  test_if_expression_in_function2() {
+    addTestSource('foo() {if (n^) }');
+    expect(computeFast(), isTrue);
+    assertSuggestKeywords(EXPRESSION_START_NO_INSTANCE);
+  }
+
   test_if_in_class() {
     addTestSource('class A {foo() {if (true) ^}}');
     expect(computeFast(), isTrue);
     assertSuggestKeywords(STMT_START_IN_CLASS);
   }
 
   test_if_in_class2() {
     addTestSource('class A {foo() {if (true) ^;}}');
     expect(computeFast(), isTrue);
     assertSuggestKeywords(STMT_START_IN_CLASS);
@@ skipping 445 matching lines @@
         (c) => msg.writeln('  $c, ${other.contains(c) ? '' : '<<<<<<<<<<<'}'));
   }
 
   bool _equalSets(Iterable<String> iter1, Iterable<String> iter2) {
     if (iter1.length != iter2.length) return false;
     if (iter1.any((c) => !iter2.contains(c))) return false;
     if (iter2.any((c) => !iter1.contains(c))) return false;
     return true;
   }
 }