Change equality comparison for FileBasedSource to use URI.

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';
 import 'dart:collection';
 
 import 'package:analyzer/src/cancelable_future.dart';
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/constant.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/html.dart' as ht;
 import 'package:analyzer/src/generated/java_core.dart';
 import 'package:analyzer/src/generated/java_engine.dart';
 import 'package:analyzer/src/generated/java_engine_io.dart';
+import 'package:analyzer/src/generated/java_io.dart';
 import 'package:analyzer/src/generated/parser.dart';
 import 'package:analyzer/src/generated/resolver.dart';
 import 'package:analyzer/src/generated/scanner.dart';
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/sdk_io.dart';
 import 'package:analyzer/src/generated/source_io.dart';
 import 'package:analyzer/src/generated/testing/ast_factory.dart';
 import 'package:analyzer/src/generated/testing/element_factory.dart';
 import 'package:analyzer/src/generated/utilities_collection.dart';
 import 'package:analyzer/src/services/lint.dart';
@@ skipping 57 matching lines @@
     TestSource source = new TestSource();
     DartEntry entry = new DartEntry();
     cache.put(source, entry);
     MapIterator<Source, SourceEntry> iterator = cache.iterator();
     expect(iterator.moveNext(), isTrue);
     expect(iterator.key, same(source));
     expect(iterator.value, same(entry));
     expect(iterator.moveNext(), isFalse);
   }
 
+  /**
+   * Verify that if multiple Source objects refer to the same file via
+   * different URIs, they are treated as separate entries in the cache.
+   */
+  void test_lookup_distinguishes_uris() {
+    CachePartition partition =
+        new UniversalCachePartition(null, 8, new DefaultRetentionPolicy());
+    AnalysisCache cache = new AnalysisCache(<CachePartition>[partition]);
+    JavaFile file = new JavaFile('baz.dart');
+    Source source1 = new FileBasedSource.con1(file);
+    Source source2 =
+        new FileBasedSource.con2(Uri.parse('package:foo/baz.dart'), file);
+    Source source3 =
+        new FileBasedSource.con2(Uri.parse('package:bar/baz.dart'), file);
+    DartEntry entry1 = new DartEntry();
+    DartEntry entry2 = new DartEntry();
+    DartEntry entry3 = new DartEntry();
+    cache.put(source1, entry1);
+    cache.put(source2, entry2);
+    cache.put(source3, entry3);
+    expect(cache.get(source1), same(entry1));
+    expect(cache.get(source2), same(entry2));
+    expect(cache.get(source3), same(entry3));
+  }
+
   void test_put_noFlush() {
     CachePartition partition =
         new UniversalCachePartition(null, 8, new DefaultRetentionPolicy());
     AnalysisCache cache = new AnalysisCache(<CachePartition>[partition]);
     TestSource source = new TestSource();
     DartEntry entry = new DartEntry();
     cache.put(source, entry);
     expect(cache.get(source), same(entry));
   }
 
@@ skipping 7050 matching lines @@
   bool exists() => true;
 }
 
 
 class _UniversalCachePartitionTest_test_setMaxCacheSize implements
     CacheRetentionPolicy {
   @override
   RetentionPriority getAstPriority(Source source, SourceEntry sourceEntry) =>
       RetentionPriority.LOW;
 }