improve suggestions in for statement

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 864 matching lines @@
     addSource('/testA.dart', 'class A { }');
     addTestSource('''
       import "/testA.dart";
       class C {var ^}''');
     computeFast();
     return computeFull(true).then((_) {
       assertNoSuggestions();
     });
   }
 
+  test_ForEachStatement_body_typed() {
+    // Block  ForEachStatement
+    addTestSource('main(args) {for (int foo in bar) {^}}');
+    computeFast();
+    return computeFull(true).then((_) {
+      assertSuggestLocalVariable('foo', 'int');
+      assertSuggestImportedClass('Object');
+    });
+  }
+
+  test_ForEachStatement_body_untyped() {
+    // Block  ForEachStatement
+    addTestSource('main(args) {for (foo in bar) {^}}');
+    computeFast();
+    return computeFull(true).then((_) {
+      assertSuggestLocalVariable('foo', null);
+      assertSuggestImportedClass('Object');
+    });
+  }
+
+  test_ForStatement_body() {
+    // Block  ForStatement
+    addTestSource('main(args) {for (int i; i < 10; ++i) {^}}');
+    computeFast();
+    return computeFull(true).then((_) {
+      assertSuggestLocalVariable('i', 'int');
+      assertSuggestImportedClass('Object');
+    });
+  }
+
+  test_ForStatement_condition() {
+    // SimpleIdentifier  ForStatement
+    addTestSource('main() {for (int index = 0; i^)}');
+    computeFast();
+    return computeFull(true).then((_) {
+      assertSuggestLocalVariable('index', 'int');
+    });
+  }
+
+  test_ForStatement_initializer() {
+    // SimpleIdentifier  ForStatement
+    addTestSource('main() {List a; for (^)}');
+    computeFast();
+    return computeFull(true).then((_) {
+      assertSuggestLocalVariable('a', 'List');
+      assertSuggestImportedClass('Object');
+      assertSuggestImportedClass('int');
+    });
+  }
+
+  test_ForStatement_updaters() {
+    // SimpleIdentifier  ForStatement
+    addTestSource('main() {for (int index = 0; index < 10; i^)}');
+    computeFast();
+    return computeFull(true).then((_) {
+      assertSuggestLocalVariable('index', 'int');
+    });
+  }
+
+  test_ForStatement_updaters_prefix_expression() {
+    // SimpleIdentifier  PrefixExpression  ForStatement
+    addTestSource('main() {for (int index = 0; index < 10; ++i^)}');
+    computeFast();
+    return computeFull(true).then((_) {
+      assertSuggestLocalVariable('index', 'int');
+    });
+  }
+
   test_ImportDirective_dart() {
     // SimpleStringLiteral  ImportDirective
     addTestSource('''
       import "dart^";
       main() {}''');
     computeFast();
     return computeFull(true).then((_) {
       assertNoSuggestions();
     });
   }
@@ skipping 269 matching lines @@
     addTestSource('''
       import "/testB.dart";
       class Y {Y.c(); Y._d(); z() {}}
       main() {var ^}''');
     computeFast();
     return computeFull(true).then((_) {
       assertNoSuggestions();
     });
   }
 }