| /* |
| * Copyright 2015-present 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.util; |
| |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Ignore; |
| import org.junit.Test; |
| |
| import static junit.framework.TestCase.fail; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| /** |
| * Unit tests for the sliding window counter. |
| */ |
| |
| @Ignore("Disable these for now because of intermittent load related failures on Jenkins runs.") |
| public class SlidingWindowCounterTest { |
| |
| private SlidingWindowCounter counter; |
| |
| @Before |
| public void setUp() { |
| counter = new SlidingWindowCounter(2); |
| } |
| |
| @After |
| public void tearDown() { |
| counter.destroy(); |
| } |
| |
| @Test |
| public void testIncrementCount() { |
| assertEquals(0, counter.get(1)); |
| assertEquals(0, counter.get(2)); |
| counter.incrementCount(); |
| assertEquals(1, counter.get(1)); |
| assertEquals(1, counter.get(2)); |
| counter.incrementCount(2); |
| assertEquals(3, counter.get(2)); |
| } |
| |
| @Test |
| public void testSlide() { |
| counter.incrementCount(); |
| counter.advanceHead(); |
| assertEquals(0, counter.get(1)); |
| assertEquals(1, counter.get(2)); |
| counter.incrementCount(2); |
| assertEquals(2, counter.get(1)); |
| assertEquals(3, counter.get(2)); |
| } |
| |
| @Test |
| public void testWrap() { |
| counter.incrementCount(); |
| counter.advanceHead(); |
| counter.incrementCount(2); |
| counter.advanceHead(); |
| assertEquals(0, counter.get(1)); |
| assertEquals(2, counter.get(2)); |
| counter.advanceHead(); |
| assertEquals(0, counter.get(1)); |
| assertEquals(0, counter.get(2)); |
| |
| } |
| |
| @Test |
| public void testCornerCases() { |
| try { |
| counter.get(3); |
| fail("Exception should have been thrown"); |
| } catch (IllegalArgumentException e) { |
| assertTrue(true); |
| } |
| |
| try { |
| new SlidingWindowCounter(0); |
| fail("Exception should have been thrown"); |
| } catch (IllegalArgumentException e) { |
| assertTrue(true); |
| } |
| |
| try { |
| new SlidingWindowCounter(-1); |
| fail("Exception should have been thrown"); |
| } catch (IllegalArgumentException e) { |
| assertTrue(true); |
| } |
| } |
| } |