1 files changed, 141 insertions, 0 deletions
diff --git a/utils-test/src/test/java/org/onap/policy/common/utils/time/PseudoTimerTest.java b/utils-test/src/test/java/org/onap/policy/common/utils/time/PseudoTimerTest.java
new file mode 100644
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--- /dev/null
+++ b/utils-test/src/test/java/org/onap/policy/common/utils/time/PseudoTimerTest.java
@@ -0,0 +1,141 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2019 AT&T Intellectual Property. 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.common.utils.time;
+
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import java.util.Date;
+import java.util.TimerTask;
+import org.junit.Before;
+import org.junit.Test;
+
+public class PseudoTimerTest {
+    private static final long DELAY_MS = 1000L;
+    private static final long PERIOD_MS = 2000L;
+
+    private int count;
+    private TestTimeMulti currentTime;
+    private PseudoTimer timer;
+
+    /**
+     * Sets up objects, including {@link #timer}.
+     */
+    @Before
+    public void setUp() {
+        count = 0;
+        currentTime = new TestTimeMulti();
+        timer = new PseudoTimer(currentTime);
+    }
+
+    @Test
+    public void testCancel() {
+        // schedule two tasks
+        timer.scheduleAtFixedRate(new MyTask(), DELAY_MS, PERIOD_MS);
+        timer.schedule(new MyTask(), DELAY_MS);
+
+        assertFalse(currentTime.isEmpty());
+
+        // cancel the timer
+        timer.cancel();
+
+        // invoke it again to ensure no exception
+        timer.cancel();
+    }
+
+    @Test
+    public void testPurge() {
+        assertEquals(0, timer.purge());
+        assertEquals(0, timer.purge());
+    }
+
+    @Test
+    public void testScheduleTimerTaskLong() throws InterruptedException {
+        timer.schedule(new MyTask(), DELAY_MS);
+        assertFalse(currentTime.isEmpty());
+
+        // wait for the initial delay
+        currentTime.waitFor(DELAY_MS);
+        assertEquals(1, count);
+
+        assertTrue(currentTime.isEmpty());
+    }
+
+    @Test
+    public void testScheduleTimerTaskDate() {
+        assertThatThrownBy(() -> timer.schedule(new MyTask(), new Date()))
+                        .isInstanceOf(UnsupportedOperationException.class);
+    }
+
+    @Test
+    public void testScheduleTimerTaskLongLong() throws InterruptedException {
+        timer.schedule(new MyTask(), DELAY_MS, PERIOD_MS);
+        assertFalse(currentTime.isEmpty());
+
+        // wait for the initial delay plus a couple of additional periods
+        final long tbegin = System.currentTimeMillis();
+        currentTime.waitFor(DELAY_MS + PERIOD_MS * 2);
+        assertTrue(count >= 3);
+
+        assertFalse(currentTime.isEmpty());
+
+        // this thread should not have blocked while waiting
+        assertTrue(System.currentTimeMillis() < tbegin + 2000);
+    }
+
+    @Test
+    public void testScheduleTimerTaskDateLong() {
+        assertThatThrownBy(() -> timer.schedule(new MyTask(), new Date(), 1L))
+                        .isInstanceOf(UnsupportedOperationException.class);
+    }
+
+    @Test
+    public void testScheduleAtFixedRateTimerTaskLongLong() throws InterruptedException {
+        timer.scheduleAtFixedRate(new MyTask(), DELAY_MS, PERIOD_MS);
+        assertFalse(currentTime.isEmpty());
+
+        // wait for the initial delay plus a couple of additional periods
+        final long tbegin = System.currentTimeMillis();
+        currentTime.waitFor(DELAY_MS + PERIOD_MS * 2);
+        assertTrue(count >= 3);
+
+        assertFalse(currentTime.isEmpty());
+
+        // this thread should not have blocked while waiting
+        assertTrue(System.currentTimeMillis() < tbegin + 2000);
+    }
+
+    @Test
+    public void testScheduleAtFixedRateTimerTaskDateLong() {
+        assertThatThrownBy(() -> timer.scheduleAtFixedRate(new MyTask(), new Date(), 1L))
+                        .isInstanceOf(UnsupportedOperationException.class);
+    }
+
+    private class MyTask extends TimerTask {
+        @Override
+        public void run() {
+            ++count;
+        }
+
+    }
+}