Adapt the existing incremental resolution implementation to the new model.

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 606 matching lines @@
     expect(entry.getValue(result1), 111);
     expect(entry.getValue(result2), 222);
     // set result1; result2 is intact
     entry.setValue(result1, 1111, TargetedResult.EMPTY_LIST);
     expect(entry.getState(result1), CacheState.VALID);
     expect(entry.getState(result2), CacheState.VALID);
     expect(entry.getValue(result1), 1111);
     expect(entry.getValue(result2), 222);
   }
 
+  test_setValueIncremental() {
+    AnalysisTarget target = new TestSource();
+    CacheEntry entry = new CacheEntry(target);
+    cache.put(entry);
+    ResultDescriptor result1 = new ResultDescriptor('result1', -1);
+    ResultDescriptor result2 = new ResultDescriptor('result2', -2);
+    ResultDescriptor result3 = new ResultDescriptor('result3', -3);
+    // set results, all of them are VALID
+    entry.setValue(result1, 111, TargetedResult.EMPTY_LIST);
+    entry.setValue(result2, 222, [new TargetedResult(target, result1)]);
+    entry.setValue(result3, 333, [new TargetedResult(target, result2)]);
+    expect(entry.getState(result1), CacheState.VALID);
+    expect(entry.getState(result2), CacheState.VALID);
+    expect(entry.getState(result3), CacheState.VALID);
+    expect(entry.getValue(result1), 111);
+    expect(entry.getValue(result2), 222);
+    expect(entry.getValue(result3), 333);
+    // replace result1, keep "dependedOn", invalidate result3
+    entry.setValueIncremental(result2, 2222);
+    expect(entry.getState(result1), CacheState.VALID);
+    expect(entry.getState(result2), CacheState.VALID);
+    expect(entry.getState(result3), CacheState.INVALID);
+    expect(entry.getValue(result1), 111);
+    expect(entry.getValue(result2), 2222);
+    expect(entry.getValue(result3), -3);
+    expect(entry.getResultData(result2).dependedOnResults,
+        unorderedEquals([new TargetedResult(target, result1)]));
+  }
+
   test_toString_empty() {
     AnalysisTarget target = new TestSource();
     CacheEntry entry = new CacheEntry(target);
     expect(entry.toString(), isNotNull);
   }
 
   test_toString_nonEmpty() {
     AnalysisTarget target = new TestSource();
     ResultDescriptor result = new ResultDescriptor('test', null);
     CacheEntry entry = new CacheEntry(target);
@@ skipping 285 matching lines @@
 
 class _InternalAnalysisContextMock extends TypedMock
     implements InternalAnalysisContext {
   noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
 }
 
 class _TestAnalysisTarget implements AnalysisTarget {
   @override
   Source get source => null;
 }