1 files changed, 68 insertions, 0 deletions
diff --git a/src/test/java/com/google/devtools/build/skyframe/TrackingInvalidationReceiver.java b/src/test/java/com/google/devtools/build/skyframe/TrackingInvalidationReceiver.java
new file mode 100644
index 0000000000..e93098d702
--- /dev/null
+++ b/src/test/java/com/google/devtools/build/skyframe/TrackingInvalidationReceiver.java
@@ -0,0 +1,68 @@
+// Copyright 2014 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package com.google.devtools.build.skyframe;
+
+import com.google.common.base.Preconditions;
+import com.google.common.collect.Sets;
+
+import java.util.Set;
+
+/**
+ * A testing utility to keep track of evaluation.
+ */
+public class TrackingInvalidationReceiver implements EvaluationProgressReceiver {
+  public final Set<SkyValue> dirty = Sets.newConcurrentHashSet();
+  public final Set<SkyValue> deleted = Sets.newConcurrentHashSet();
+  public final Set<SkyKey> enqueued = Sets.newConcurrentHashSet();
+  public final Set<SkyKey> evaluated = Sets.newConcurrentHashSet();
+
+  @Override
+  public void invalidated(SkyValue value, InvalidationState state) {
+    switch (state) {
+      case DELETED:
+        dirty.remove(value);
+        deleted.add(value);
+        break;
+      case DIRTY:
+        dirty.add(value);
+        Preconditions.checkState(!deleted.contains(value));
+        break;
+      default:
+        throw new IllegalStateException();
+    }
+  }
+
+  @Override
+  public void enqueueing(SkyKey skyKey) {
+    enqueued.add(skyKey);
+  }
+
+  @Override
+  public void evaluated(SkyKey skyKey, SkyValue value, EvaluationState state) {
+    evaluated.add(skyKey);
+    switch (state) {
+      default:
+        dirty.remove(value);
+        deleted.remove(value);
+        break;
+    }
+  }
+
+  public void clear() {
+    dirty.clear();
+    deleted.clear();
+    enqueued.clear();
+    evaluated.clear();
+  }
+}