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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.metrics.simple;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.concurrent.TimeUnit;
import static org.junit.jupiter.api.Assertions.assertEquals;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
/**
* Functional tests for counters.
*
* @author steinar
*/
public class CounterTest {
MetricReceiver receiver;
@BeforeEach
public void setUp() throws Exception {
receiver = new MetricReceiver.MockReceiver();
}
@AfterEach
public void tearDown() throws Exception {
receiver = null;
}
@Test
final void testAdd() {
final String metricName = "unitTestCounter";
Counter c = receiver.declareCounter(metricName);
c.add();
Bucket b = receiver.getSnapshot();
final Map<String, List<Entry<Point, UntypedMetric>>> valuesByMetricName = b.getValuesByMetricName();
assertEquals(1, valuesByMetricName.size());
List<Entry<Point, UntypedMetric>> x = valuesByMetricName.get(metricName);
assertEquals(1, x.size());
assertEquals(Point.emptyPoint(), x.get(0).getKey());
assertEquals(1L, x.get(0).getValue().getCount());
}
@Test
final void testAddLong() {
final String metricName = "unitTestCounter";
Counter c = receiver.declareCounter(metricName);
final long twoToThePowerOfFourtyeight = 65536L * 65536L * 65536L;
c.add(twoToThePowerOfFourtyeight);
Bucket b = receiver.getSnapshot();
final Map<String, List<Entry<Point, UntypedMetric>>> valuesByMetricName = b.getValuesByMetricName();
assertEquals(1, valuesByMetricName.size());
List<Entry<Point, UntypedMetric>> x = valuesByMetricName.get(metricName);
assertEquals(1, x.size());
assertEquals(Point.emptyPoint(), x.get(0).getKey());
assertEquals(twoToThePowerOfFourtyeight, x.get(0).getValue().getCount());
}
@Test
final void testAddPoint() {
final String metricName = "unitTestCounter";
Point p = receiver.pointBuilder().set("x", 2L).set("y", 3.0d).set("z", "5").build();
Counter c = receiver.declareCounter(metricName, p);
c.add();
Bucket b = receiver.getSnapshot();
final Map<String, List<Entry<Point, UntypedMetric>>> valuesByMetricName = b.getValuesByMetricName();
assertEquals(1, valuesByMetricName.size());
List<Entry<Point, UntypedMetric>> x = valuesByMetricName.get(metricName);
assertEquals(1, x.size());
assertEquals(p, x.get(0).getKey());
assertEquals(1, x.get(0).getValue().getCount());
}
@Test
final void testAddLongPoint() {
final String metricName = "unitTestCounter";
Point p = receiver.pointBuilder().set("x", 2L).set("y", 3.0d).set("z", "5").build();
Counter c = receiver.declareCounter(metricName, p);
final long twoToThePowerOfFourtyeight = 65536L * 65536L * 65536L;
c.add(twoToThePowerOfFourtyeight, c.builder().set("x", 7).set("_y", 11.0d).set("Z", "13").build());
Bucket b = receiver.getSnapshot();
final Map<String, List<Entry<Point, UntypedMetric>>> valuesByMetricName = b.getValuesByMetricName();
assertEquals(1, valuesByMetricName.size());
List<Entry<Point, UntypedMetric>> x = valuesByMetricName.get(metricName);
assertEquals(1, x.size());
Point actual = x.get(0).getKey();
assertEquals(5, actual.dimensionality());
List<String> dimensions = actual.dimensions();
List<Value> location = actual.location();
assertEquals(dimensions.size(), location.size());
Iterator<String> i0 = dimensions.iterator();
Iterator<Value> i1 = location.iterator();
Map<String, Value> asMap = new HashMap<>();
while (i0.hasNext() && i1.hasNext()) {
asMap.put(i0.next(), i1.next());
}
assertEquals(Value.of(7), asMap.get("x"));
assertEquals(Value.of(3.0d), asMap.get("y"));
assertEquals(Value.of("5"), asMap.get("z"));
assertEquals(Value.of(11.0d), asMap.get("_y"));
assertEquals(Value.of("13"), asMap.get("Z"));
assertEquals(twoToThePowerOfFourtyeight, x.get(0).getValue().getCount());
}
}
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