/*
* Copyright (c) 2008-2017, Hazelcast, Inc. 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.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.hazelcast.internal.metrics.impl;
import com.hazelcast.internal.metrics.DoubleGauge;
import com.hazelcast.internal.metrics.DoubleProbeFunction;
import com.hazelcast.internal.metrics.LongProbeFunction;
import com.hazelcast.internal.metrics.Probe;
import com.hazelcast.logging.Logger;
import com.hazelcast.test.HazelcastSerialClassRunner;
import com.hazelcast.test.annotation.QuickTest;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import static com.hazelcast.internal.metrics.ProbeLevel.INFO;
import static com.hazelcast.internal.metrics.ProbeLevel.MANDATORY;
import static org.junit.Assert.assertEquals;
@RunWith(HazelcastSerialClassRunner.class)
@Category(QuickTest.class)
public class DoubleGaugeImplTest {
private MetricsRegistryImpl metricsRegistry;
@Before
public void setup() {
metricsRegistry = new MetricsRegistryImpl(Logger.getLogger(MetricsRegistryImpl.class), INFO);
}
class SomeObject {
@Probe
long longField = 10;
@Probe
double doubleField = 10.8;
}
// ============ readDouble ===========================
@Test
public void whenNoProbeAvailable() {
DoubleGauge gauge = metricsRegistry.newDoubleGauge("foo");
double actual = gauge.read();
assertEquals(0, actual, 0.1);
}
@Test
public void whenProbeThrowsException() {
metricsRegistry.register(this, "foo", MANDATORY,
new DoubleProbeFunction() {
@Override
public double get(Object o) {
throw new RuntimeException();
}
});
DoubleGauge gauge = metricsRegistry.newDoubleGauge("foo");
double actual = gauge.read();
assertEquals(0, actual, 0.1);
}
@Test
public void whenDoubleProbe() {
metricsRegistry.register(this, "foo", MANDATORY,
new DoubleProbeFunction() {
@Override
public double get(Object o) {
return 10;
}
});
DoubleGauge gauge = metricsRegistry.newDoubleGauge("foo");
double actual = gauge.read();
assertEquals(10, actual, 0.1);
}
@Test
public void whenLongProbe() {
metricsRegistry.register(this, "foo", MANDATORY,
new LongProbeFunction() {
@Override
public long get(Object o) throws Exception {
return 10;
}
});
DoubleGauge gauge = metricsRegistry.newDoubleGauge("foo");
double actual = gauge.read();
assertEquals(10, actual, 0.1);
}
@Test
public void whenLongGaugeField() {
SomeObject someObject = new SomeObject();
metricsRegistry.scanAndRegister(someObject, "foo");
DoubleGauge gauge = metricsRegistry.newDoubleGauge("foo.longField");
assertEquals(someObject.longField, gauge.read(), 0.1);
}
@Test
public void whenDoubleGaugeField() {
SomeObject someObject = new SomeObject();
metricsRegistry.scanAndRegister(someObject, "foo");
DoubleGauge gauge = metricsRegistry.newDoubleGauge("foo.doubleField");
assertEquals(someObject.doubleField, gauge.read(), 0.1);
}
}