Report an error on Dart Source reading exception.

pkg/analyzer/test/generated/engine_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.
 
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.engine_test;
 
 import 'dart:async';
@@ skipping 1618 matching lines @@
     expect(
         _context.getResolvedCompilationUnit2(libSource, libSource),
         isNotNull,
         reason: "library resolved 3");
     expect(
         _context.getResolvedCompilationUnit2(partSource, libSource),
         isNotNull,
         reason: "part resolved 3");
   }
 
+  void test_performAnalysisTask_getContentException_dart() {
+    // add source that throw an exception on "get content"
+    Source source = new _Source_getContent_throwException('test.dart');
+    {
+      ChangeSet changeSet = new ChangeSet();
+      changeSet.addedSource(source);
+      _context.applyChanges(changeSet);
+    }
+    // prepare errors
+    _analyzeAll_assertFinished();
+    List<AnalysisError> errors = _context.getErrors(source).errors;
+    // validate errors
+    expect(errors, hasLength(1));
+    AnalysisError error = errors[0];
+    expect(error.source, same(source));
+    expect(error.errorCode, ScannerErrorCode.UNABLE_GET_CONTENT);
+  }
+
   void test_performAnalysisTask_importedLibraryAdd() {
     Source libASource =
         _addSource("/libA.dart", "library libA; import 'libB.dart';");
     _analyzeAll_assertFinished();
     expect(
         _context.getResolvedCompilationUnit2(libASource, libASource),
         isNotNull,
         reason: "libA resolved 1");
     expect(
         _hasAnalysisErrorWithErrorSeverity(_context.getErrors(libASource)),
@@ skipping 563 matching lines @@
     List<AnalysisError> errors = errorInfo.errors;
     for (AnalysisError analysisError in errors) {
       if (analysisError.errorCode.errorSeverity == ErrorSeverity.ERROR) {
         return true;
       }
     }
     return false;
   }
 }
 
-
 class AnalysisContextImplTest_Source_exists_true extends TestSource {
   @override
   bool exists() => true;
 }
 
 
 class AnalysisContextImplTest_Source_getModificationStamp_fromSource extends
     TestSource {
   int stamp;
   AnalysisContextImplTest_Source_getModificationStamp_fromSource(this.stamp);
@@ skipping 1749 matching lines @@
         new GenerateDartHintsTaskTestTV_perform(librarySource, partSource));
   }
 }
 
 
 class GenerateDartHintsTaskTestTV_accept extends TestTaskVisitor<bool> {
   @override
   bool visitGenerateDartHintsTask(GenerateDartHintsTask task) => true;
 }
 
+
 class GenerateDartHintsTaskTestTV_perform extends TestTaskVisitor<bool> {
   Source librarySource;
   Source partSource;
   GenerateDartHintsTaskTestTV_perform(this.librarySource, this.partSource);
   @override
   bool visitGenerateDartHintsTask(GenerateDartHintsTask task) {
     CaughtException exception = task.exception;
     if (exception != null) {
       throw exception;
     }
@@ skipping 106 matching lines @@
 
   void test_perform_valid() {
     Source source = new TestSource('/test.dart', 'class A {}');
     InternalAnalysisContext context = new AnalysisContextImpl();
     context.sourceFactory = new SourceFactory([new FileUriResolver()]);
     GetContentTask task = new GetContentTask(context, source);
     task.perform(new GetContentTaskTestTV_perform_valid(context, source));
   }
 }
 
-
 class GetContentTaskTestTV_accept extends TestTaskVisitor<bool> {
   @override
   bool visitGetContentTask(GetContentTask task) => true;
 }
 
+
 class GetContentTaskTestTV_perform_exception extends TestTaskVisitor<bool> {
   @override
   bool visitGetContentTask(GetContentTask task) {
     expect(task.exception, isNotNull);
     return true;
   }
 }
 
-
 class GetContentTaskTestTV_perform_valid extends TestTaskVisitor<bool> {
   InternalAnalysisContext context;
   Source source;
   GetContentTaskTestTV_perform_valid(this.context, this.source);
   @override
   bool visitGetContentTask(GetContentTask task) {
     CaughtException exception = task.exception;
     if (exception != null) {
       throw exception;
     }
@@ skipping 849 matching lines @@
     expect(visited, isTrue);
   }
 
   @override
   Object visitCompilationUnit(CompilationUnit node) {
     visited = true;
     return null;
   }
 }
 
+
 class LintGeneratorTest_Linter_Null_Visitor extends Linter {
   @override
   AstVisitor getVisitor() => null;
 }
 
-
 @reflectiveTest
 class ParseDartTaskTest extends EngineTestCase {
   void test_accept() {
     ParseDartTask task = new ParseDartTask(null, null, null, null);
     expect(task.accept(new ParseDartTaskTestTV_accept()), isTrue);
   }
 
   void test_getCompilationUnit() {
     ParseDartTask task = new ParseDartTask(null, null, null, null);
     expect(task.compilationUnit, isNull);
@@ skipping 2068 matching lines @@
 
 class _AnalysisContextImplTest_test_applyChanges_removeContainer implements
     SourceContainer {
   Source libB;
   _AnalysisContextImplTest_test_applyChanges_removeContainer(this.libB);
   @override
   bool contains(Source source) => source == libB;
 }
 
 
+class _Source_getContent_throwException extends NonExistingSource {
+  _Source_getContent_throwException(String name)
+      : super(name, UriKind.FILE_URI);
+
+  @override
+  TimestampedData<String> get contents {
+    throw 'Read error';
+  }
+}
+
+
 class _UniversalCachePartitionTest_test_setMaxCacheSize implements
     CacheRetentionPolicy {
   @override
   RetentionPriority getAstPriority(Source source, SourceEntry sourceEntry) =>
       RetentionPriority.LOW;
 }