Type check for-in statements.

pkg/analyzer/test/generated/resolver_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 analyzer.test.generated.resolver_test;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
@@ skipping 8353 matching lines @@
               errorCode == HintCode.UNUSED_CATCH_STACK ||
               errorCode == HintCode.UNUSED_LOCAL_VARIABLE)) {
         continue;
       }
       errorListener.onError(error);
     }
     errorListener.assertErrorsWithCodes(expectedErrorCodes);
   }
 
   /**
+   * Asserts that [code] has errors with the given error codes.
+   *
+   * Like [assertErrors], but takes a string of source code.
+   */
+  // TODO(rnystrom): Use this in more tests that have the same structure.
+  void assertErrorsInCode(String code, List<ErrorCode> errors) {
+    Source source = addSource(code);
+    computeLibrarySourceErrors(source);
+    assertErrors(source, errors);
+    verify([source]);
+  }
+
+  /**
    * Assert that no errors have been reported against the given source.
    *
    * @param source the source against which no errors should have been reported
    * @throws AnalysisException if the reported errors could not be computed
    * @throws AssertionFailedError if any errors have been reported
    */
   void assertNoErrors(Source source) {
     assertErrors(source);
   }
 
   /**
+   * Asserts that [code] has no errors or warnings.
+   */
+  // TODO(rnystrom): Use this in more tests that have the same structure.
+  void assertNoErrorsInCode(String code) {
+    Source source = addSource(code);
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  /**
    * Cache the source file content in the source factory but don't add the source to the analysis
    * context. The file path should be absolute.
    *
    * @param filePath the path of the file being cached
    * @param contents the contents to be returned by the content provider for the specified file
    * @return the source object representing the cached file
    */
   Source cacheSource(String filePath, String contents) {
     Source source = new FileBasedSource(FileUtilities2.createFile(filePath));
     analysisContext2.setContents(source, contents);
@@ skipping 9079 matching lines @@
 
   void _resolveTestUnit(String code) {
     testCode = code;
     testSource = addSource(testCode);
     LibraryElement library = resolve2(testSource);
     assertNoErrors(testSource);
     verify([testSource]);
     testUnit = resolveCompilationUnit(testSource, library);
   }
 }