Add AnalysisCache.getState() and getValue().

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_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() {
+    ResultDescriptor result = new ResultDescriptor('result', -1);
+    AnalysisTarget target = new TestSource();
+    CacheEntry entry = new CacheEntry(target);
+    cache.put(entry);
+    entry.setValue(result, '', []);
+    expect(cache.getState(target, result), CacheState.VALID);
+  }
+
+  void test_getState_noEntry() {
+    ResultDescriptor result = new ResultDescriptor('result', -1);
+    AnalysisTarget target = new TestSource();
+    expect(cache.getState(target, result), CacheState.INVALID);
+  }
+
+  void test_getValue_hasEntry_valid() {
+    ResultDescriptor result = new ResultDescriptor('result', -1);
+    AnalysisTarget target = new TestSource();
+    CacheEntry entry = new CacheEntry(target);
+    cache.put(entry);
+    entry.setValue(result, 111, []);
+    expect(cache.getValue(target, result), 111);
+  }
+
+  void test_getValue_noEntry() {
+    ResultDescriptor result = new ResultDescriptor('result', -1);
+    AnalysisTarget target = new TestSource();
+    expect(cache.getValue(target, result), -1);
+  }
+
   void test_iterator() {
     AnalysisTarget target = new TestSource();
     CacheEntry entry = new CacheEntry(target);
     cache.put(entry);
     MapIterator<AnalysisTarget, CacheEntry> iterator = cache.iterator();
     expect(iterator.moveNext(), isTrue);
     expect(iterator.key, same(target));
     expect(iterator.value, same(entry));
     expect(iterator.moveNext(), isFalse);
   }
@@ skipping 761 matching lines @@
     UniversalCachePartition partition = new UniversalCachePartition(null);
     TestSource source = new TestSource();
     expect(partition.isResponsibleFor(source), isTrue);
   }
 }
 
 class _InternalAnalysisContextMock extends TypedMock
     implements InternalAnalysisContext {
   noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
 }