Optimize AnalysisContext.getSourcesWithFullName().

pkg/analyzer/test/src/context/cache_test.dart

 // Copyright (c) 2015, 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.src.task.driver_test;
 
 import 'package:analyzer/src/context/cache.dart';
 import 'package:analyzer/src/generated/engine.dart'
     show
         AnalysisContext,
@@ skipping 49 matching lines @@
   void test_get() {
     AnalysisTarget target = new TestSource();
     expect(cache.get(target), isNull);
   }
 
   void test_getContextFor() {
     AnalysisTarget target = new TestSource();
     expect(cache.getContextFor(target), context);
   }
 
+  void test_getSourcesWithFullName() {
+    String filePath = '/foo/lib/file.dart';
+    // no sources
+    expect(cache.getSourcesWithFullName(filePath), isEmpty);
+    // add source1
+    TestSourceWithUri source1 =
+        new TestSourceWithUri(filePath, Uri.parse('file://$filePath'));
+    cache.put(new CacheEntry(source1));
+    expect(cache.getSourcesWithFullName(filePath), unorderedEquals([source1]));
+    // add source2
+    TestSourceWithUri source2 =
+        new TestSourceWithUri(filePath, Uri.parse('package:foo/file.dart'));
+    cache.put(new CacheEntry(source2));
+    expect(cache.getSourcesWithFullName(filePath),
+        unorderedEquals([source1, source2]));
+    // remove source1
+    cache.remove(source1);
+    expect(cache.getSourcesWithFullName(filePath), unorderedEquals([source2]));
+    // remove source2
+    cache.remove(source2);
+    expect(cache.getSourcesWithFullName(filePath), isEmpty);
+    // ignored
+    cache.remove(source1);
+    cache.remove(source2);
+    expect(cache.getSourcesWithFullName(filePath), isEmpty);
+  }
+
   void test_getState_hasEntry_flushed() {
     ResultDescriptor result = new ResultDescriptor('result', -1);
     AnalysisTarget target = new TestSource();
     CacheEntry entry = new CacheEntry(target);
     cache.put(entry);
     entry.setState(result, CacheState.FLUSHED);
     expect(cache.getState(target, result), CacheState.FLUSHED);
   }
 
   void test_getState_hasEntry_valid() {
@@ skipping 815 matching lines @@
 
 class _InternalAnalysisContextMock extends TypedMock
     implements InternalAnalysisContext {
   noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
 }
 
 class _TestAnalysisTarget implements AnalysisTarget {
   @override
   Source get source => null;
 }