1 files changed, 60 insertions, 0 deletions
diff --git a/framework/src/onos/utils/nio/src/test/java/org/onlab/nio/AbstractLoopTest.java b/framework/src/onos/utils/nio/src/test/java/org/onlab/nio/AbstractLoopTest.java
new file mode 100644
index 00000000..2b4a85cd
--- /dev/null
+++ b/framework/src/onos/utils/nio/src/test/java/org/onlab/nio/AbstractLoopTest.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2014 Open Networking Laboratory
+ *
+ * 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 org.onlab.nio;
+
+import org.junit.Before;
+
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.TimeUnit;
+
+import static java.util.concurrent.Executors.newSingleThreadExecutor;
+import static org.junit.Assert.fail;
+import static org.onlab.util.Tools.namedThreads;
+
+/**
+ * Base class for various NIO loop unit tests.
+ */
+public abstract class AbstractLoopTest {
+
+    protected static final long MAX_MS_WAIT = 1500;
+
+    /** Block on specified countdown latch. Return when countdown reaches
+     * zero, or fail the test if the {@value #MAX_MS_WAIT} ms timeout expires.
+     *
+     * @param latch the latch
+     * @param label an identifying label
+     */
+    protected void waitForLatch(CountDownLatch latch, String label) {
+        try {
+            boolean ok = latch.await(MAX_MS_WAIT, TimeUnit.MILLISECONDS);
+            if (!ok) {
+                fail("Latch await timeout! [" + label + "]");
+            }
+        } catch (InterruptedException e) {
+            System.out.println("Latch interrupt [" + label + "] : " + e);
+            fail("Unexpected interrupt");
+        }
+    }
+
+    protected ExecutorService exec;
+
+    @Before
+    public void setUp() {
+        exec = newSingleThreadExecutor(namedThreads("test"));
+    }
+
+}