1 files changed, 61 insertions, 0 deletions
diff --git a/InCallUI/tests/src/com/android/incallui/async/SingleProdThreadExecutor.java b/InCallUI/tests/src/com/android/incallui/async/SingleProdThreadExecutor.java
new file mode 100644
index 000000000..ee27862b3
--- /dev/null
+++ b/InCallUI/tests/src/com/android/incallui/async/SingleProdThreadExecutor.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * 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.android.incallui.async;
+
+import java.util.concurrent.Executors;
+
+import javax.annotation.concurrent.ThreadSafe;
+
+/**
+ * {@link PausableExecutor} for use in tests. It is intended to be used between one test thread
+ * and one prod thread.
+ */
+@ThreadSafe
+public final class SingleProdThreadExecutor implements PausableExecutor {
+
+    private int mMilestonesReached;
+    private int mMilestonesAcked;
+
+    @Override
+    public synchronized void milestone() {
+        ++mMilestonesReached;
+        notify();
+        while (mMilestonesReached > mMilestonesAcked) {
+            try {
+                wait();
+            } catch (InterruptedException e) {}
+        }
+    }
+
+    @Override
+    public synchronized void ackMilestoneForTesting() {
+        ++mMilestonesAcked;
+        notify();
+    }
+
+    @Override
+    public synchronized void awaitMilestoneForTesting() throws InterruptedException {
+        while (mMilestonesReached <= mMilestonesAcked) {
+            wait();
+        }
+    }
+
+    @Override
+    public synchronized void execute(Runnable command) {
+        Executors.newSingleThreadExecutor().execute(command);
+    }
+}