1 files changed, 56 insertions, 0 deletions
diff --git a/src/java_tools/singlejar/javatests/com/google/devtools/build/singlejar/RecordingCallback.java b/src/java_tools/singlejar/javatests/com/google/devtools/build/singlejar/RecordingCallback.java
new file mode 100644
index 0000000000..a3f69ff434
--- /dev/null
+++ b/src/java_tools/singlejar/javatests/com/google/devtools/build/singlejar/RecordingCallback.java
@@ -0,0 +1,56 @@
+// Copyright 2015 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.singlejar;
+
+
+import com.google.devtools.build.singlejar.ZipEntryFilter.CustomMergeStrategy;
+import com.google.devtools.build.singlejar.ZipEntryFilter.StrategyCallback;
+
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+/**
+ * A helper implementation of {@link StrategyCallback} that records callback
+ * invocations as string.
+ */
+public final class RecordingCallback implements StrategyCallback {
+
+  public final List<String> calls = new ArrayList<>();
+  public final List<Date> dates = new ArrayList<>();
+
+  @Override
+  public void copy(Date date) {
+    calls.add("copy");
+    dates.add(date);
+  }
+
+  @Override
+  public void rename(String filename, Date date) {
+    calls.add("rename");
+    dates.add(date);
+  }
+
+  @Override
+  public void customMerge(Date date, CustomMergeStrategy strategy) {
+    calls.add("customMerge");
+    dates.add(date);
+  }
+
+  @Override
+  public void skip() {
+    calls.add("skip");
+  }
+}