1 files changed, 14 insertions, 3 deletions

diff --git a/utils-test/src/test/java/org/onap/policy/common/utils/time/TestTimeMultiTest.java b/utils-test/src/test/java/org/onap/policy/common/utils/time/TestTimeMultiTest.java
index 311e276d..f17235a2 100644
--- a/utils-test/src/test/java/org/onap/policy/common/utils/time/TestTimeMultiTest.java
+++ b/utils-test/src/test/java/org/onap/policy/common/utils/time/TestTimeMultiTest.java
@@ -2,14 +2,14 @@
  * ============LICENSE_START=======================================================
  * Common Utils-Test
  * ================================================================================
- * Copyright (C) 2018 AT&T Intellectual Property. All rights reserved.
+ * Copyright (C) 2018-2019 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.
@@ -20,6 +20,7 @@
 
 package org.onap.policy.common.utils.time;
 
+import static org.assertj.core.api.Assertions.assertThatIllegalStateException;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
 
@@ -72,6 +73,9 @@ public class TestTimeMultiTest {
         }
 
         assertTrue(ttm.getMillis() >= tbeg + NTIMES * MIN_SLEEP_MS);
+
+        // something in the queue, but no threads remain -> exception
+        assertThatIllegalStateException().isThrownBy(() -> ttm.threadCompleted());
     }
 
     private class MyThread extends Thread {
@@ -95,6 +99,13 @@ public class TestTimeMultiTest {
         public void run() {
             try {
                 for (int x = 0; x < NTIMES; ++x) {
+                    // negative sleep should have no effect
+                    texpected = ttm.getMillis();
+                    ttm.sleep(-1);
+                    if ((tactual = ttm.getMillis()) != texpected) {
+                        break;
+                    }
+
                     texpected = ttm.getMillis() + sleepMs;
                     ttm.sleep(sleepMs);