BasicCounterTest.java

/**
 * Copyright 2013 Netflix, Inc.
 * <p/>
 * 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
 * <p/>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p/>
 * 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 com.netflix.servo.monitor;

import com.netflix.servo.annotations.DataSourceType;
import com.netflix.servo.tag.Tag;
import org.testng.annotations.Test;

import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertNotEquals;

public class BasicCounterTest extends AbstractMonitorTest<BasicCounter> {

  public BasicCounter newInstance(String name) {
    return new BasicCounter(MonitorConfig.builder(name).build());
  }

  @Test
  public void testHasCounterTag() throws Exception {
    Tag type = newInstance("foo").getConfig().getTags().getTag(DataSourceType.KEY);
    assertEquals(type.getValue(), "COUNTER");
  }

  @Test
  public void testGetValue() throws Exception {
    BasicCounter c = newInstance("foo");
    assertEquals(c.getValue().longValue(), 0L);
    c.increment();
    assertEquals(c.getValue().longValue(), 1L);
    c.increment(13);
    assertEquals(c.getValue().longValue(), 14L);
  }

  @Test
  public void testEqualsCount() throws Exception {
    BasicCounter c1 = newInstance("foo");
    BasicCounter c2 = newInstance("foo");
    assertEquals(c1, c2);

    c1.increment();
    assertNotEquals(c1, c2);
    c2.increment();
    assertEquals(c1, c2);
  }
}