/*
* Copyright 2014 NAVER Corp.
*
* 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 com.navercorp.pinpoint.profiler.sampler;
import com.navercorp.pinpoint.profiler.sampler.SamplingRateSampler;
import org.junit.Assert;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* @author emeroad
*/
public class SimpleSamplerTest {
private final Logger logger = LoggerFactory.getLogger(this.getClass());
@Test
public void test() {
SamplingRateSampler simpleSampler = new SamplingRateSampler(1);
assertChoice(simpleSampler);
assertChoice(simpleSampler);
assertChoice(simpleSampler);
assertChoice(simpleSampler);
SamplingRateSampler simpleSampler2 = new SamplingRateSampler(2);
assertChoice(simpleSampler2);
assertDrop(simpleSampler2);
assertChoice(simpleSampler2);
assertDrop(simpleSampler2);
}
@Test
public void mod() {
int i = 0 % 101;
logger.debug("{}", i);
int j = Math.abs(-102) % 101;
logger.debug("{}", j);
}
private void assertDrop(SamplingRateSampler simpleSampler) {
boolean sample = simpleSampler.isSampling();
Assert.assertFalse(sample);
}
private void assertChoice(SamplingRateSampler simpleSampler) {
boolean sample = simpleSampler.isSampling();
Assert.assertTrue(sample);
}
}