/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.beam.runners.core.metrics;
import static org.hamcrest.Matchers.equalTo;
import static org.junit.Assert.assertThat;
import org.apache.beam.sdk.metrics.MetricName;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/**
* Tests for {@link CounterCell}.
*/
@RunWith(JUnit4.class)
public class CounterCellTest {
private CounterCell cell = new CounterCell(MetricName.named("hello", "world"));
@Test
public void testDeltaAndCumulative() {
cell.inc(5);
cell.inc(7);
assertThat(cell.getCumulative(), equalTo(12L));
assertThat("getCumulative is idempotent", cell.getCumulative(), equalTo(12L));
assertThat(cell.getDirty().beforeCommit(), equalTo(true));
cell.getDirty().afterCommit();
assertThat(cell.getDirty().beforeCommit(), equalTo(false));
assertThat(cell.getCumulative(), equalTo(12L));
cell.inc(30);
assertThat(cell.getCumulative(), equalTo(42L));
assertThat(cell.getDirty().beforeCommit(), equalTo(true));
cell.getDirty().afterCommit();
assertThat(cell.getDirty().beforeCommit(), equalTo(false));
}
}