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/*
* Copyright 2018, OpenCensus Authors
*
* 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 io.opencensus.implcore.metrics;
import static com.google.common.truth.Truth.assertThat;
import io.opencensus.common.Timestamp;
import io.opencensus.common.ToDoubleFunction;
import io.opencensus.common.ToLongFunction;
import io.opencensus.metrics.LabelKey;
import io.opencensus.metrics.LabelValue;
import io.opencensus.metrics.export.Metric;
import io.opencensus.metrics.export.MetricDescriptor;
import io.opencensus.metrics.export.MetricDescriptor.Type;
import io.opencensus.metrics.export.Point;
import io.opencensus.metrics.export.TimeSeries;
import io.opencensus.metrics.export.Value;
import io.opencensus.testing.common.TestClock;
import java.util.Collections;
import java.util.LinkedHashMap;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Unit tests for {@link MetricRegistryImpl}. */
@RunWith(JUnit4.class)
public class MetricRegistryImplTest {
private static final String NAME = "name";
private static final String DESCRIPTION = "description";
private static final String UNIT = "1";
private static final LabelKey LABEL_KEY = LabelKey.create("key", "key description");
private static final LabelValue LABEL_VALUES = LabelValue.create("value");
private static final Timestamp TEST_TIME = Timestamp.create(1234, 123);
@Rule public ExpectedException thrown = ExpectedException.none();
private final TestClock testClock = TestClock.create(TEST_TIME);
private final MetricRegistryImpl metricRegistry = new MetricRegistryImpl(testClock);
private final LinkedHashMap<LabelKey, LabelValue> labels =
new LinkedHashMap<LabelKey, LabelValue>();
@Before
public void setUp() {
labels.put(LABEL_KEY, LABEL_VALUES);
}
@Test
public void addDoubleGauge_NullName() {
thrown.expect(NullPointerException.class);
metricRegistry.addDoubleGauge(
null,
DESCRIPTION,
UNIT,
labels,
null,
new ToDoubleFunction<Object>() {
@Override
public double applyAsDouble(Object value) {
return 5.0;
}
});
}
@Test
public void addDoubleGauge_NullDescription() {
thrown.expect(NullPointerException.class);
metricRegistry.addDoubleGauge(
NAME,
null,
UNIT,
labels,
null,
new ToDoubleFunction<Object>() {
@Override
public double applyAsDouble(Object value) {
return 5.0;
}
});
}
@Test
public void addDoubleGauge_NullUnit() {
thrown.expect(NullPointerException.class);
metricRegistry.addDoubleGauge(
NAME,
DESCRIPTION,
null,
labels,
null,
new ToDoubleFunction<Object>() {
@Override
public double applyAsDouble(Object value) {
return 5.0;
}
});
}
@Test
public void addDoubleGauge_NullLabels() {
thrown.expect(NullPointerException.class);
metricRegistry.addDoubleGauge(
NAME,
DESCRIPTION,
UNIT,
null,
null,
new ToDoubleFunction<Object>() {
@Override
public double applyAsDouble(Object value) {
return 5.0;
}
});
}
@Test
public void addDoubleGauge_NullFunction() {
thrown.expect(NullPointerException.class);
metricRegistry.addDoubleGauge(NAME, DESCRIPTION, UNIT, labels, null, null);
}
@Test
public void addDoubleGauge_GetMetrics() {
metricRegistry.addDoubleGauge(
NAME,
DESCRIPTION,
UNIT,
labels,
null,
new ToDoubleFunction<Object>() {
@Override
public double applyAsDouble(Object value) {
return 5.0;
}
});
assertThat(metricRegistry.getMetricProducer().getMetrics())
.containsExactly(
Metric.create(
MetricDescriptor.create(
NAME,
DESCRIPTION,
UNIT,
Type.GAUGE_DOUBLE,
Collections.unmodifiableList(Collections.singletonList(LABEL_KEY))),
Collections.singletonList(
TimeSeries.createWithOnePoint(
Collections.unmodifiableList(Collections.singletonList(LABEL_VALUES)),
Point.create(Value.doubleValue(5.0), TEST_TIME),
null))));
}
@Test
public void addLongGauge_NullName() {
thrown.expect(NullPointerException.class);
metricRegistry.addLongGauge(
null,
DESCRIPTION,
UNIT,
labels,
null,
new ToLongFunction<Object>() {
@Override
public long applyAsLong(Object value) {
return 7;
}
});
}
@Test
public void addLongGauge_NullDescription() {
thrown.expect(NullPointerException.class);
metricRegistry.addLongGauge(
NAME,
null,
UNIT,
labels,
null,
new ToLongFunction<Object>() {
@Override
public long applyAsLong(Object value) {
return 5;
}
});
}
@Test
public void addLongGauge_NullUnit() {
thrown.expect(NullPointerException.class);
metricRegistry.addLongGauge(
NAME,
DESCRIPTION,
null,
labels,
null,
new ToLongFunction<Object>() {
@Override
public long applyAsLong(Object value) {
return 5;
}
});
}
@Test
public void addLongGauge_NullLabels() {
thrown.expect(NullPointerException.class);
metricRegistry.addLongGauge(
NAME,
DESCRIPTION,
UNIT,
null,
null,
new ToLongFunction<Object>() {
@Override
public long applyAsLong(Object value) {
return 5;
}
});
}
@Test
public void addLongGauge_NullFunction() {
thrown.expect(NullPointerException.class);
metricRegistry.addLongGauge("name", DESCRIPTION, UNIT, labels, null, null);
}
@Test
public void addLongGauge_GetMetrics() {
metricRegistry.addLongGauge(
NAME,
DESCRIPTION,
UNIT,
labels,
null,
new ToLongFunction<Object>() {
@Override
public long applyAsLong(Object value) {
return 7;
}
});
assertThat(metricRegistry.getMetricProducer().getMetrics())
.containsExactly(
Metric.create(
MetricDescriptor.create(
NAME,
DESCRIPTION,
UNIT,
Type.GAUGE_INT64,
Collections.unmodifiableList(Collections.singletonList(LABEL_KEY))),
Collections.singletonList(
TimeSeries.createWithOnePoint(
Collections.unmodifiableList(Collections.singletonList(LABEL_VALUES)),
Point.create(Value.longValue(7), TEST_TIME),
null))));
}
@Test
public void multipleMetrics_GetMetrics() {
metricRegistry.addLongGauge(
NAME,
DESCRIPTION,
UNIT,
labels,
null,
new ToLongFunction<Object>() {
@Override
public long applyAsLong(Object value) {
return 7;
}
});
metricRegistry.addDoubleGauge(
NAME,
DESCRIPTION,
UNIT,
labels,
null,
new ToDoubleFunction<Object>() {
@Override
public double applyAsDouble(Object value) {
return 5.0;
}
});
assertThat(metricRegistry.getMetricProducer().getMetrics())
.containsExactly(
Metric.create(
MetricDescriptor.create(
NAME,
DESCRIPTION,
UNIT,
Type.GAUGE_INT64,
Collections.unmodifiableList(Collections.singletonList(LABEL_KEY))),
Collections.singletonList(
TimeSeries.createWithOnePoint(
Collections.unmodifiableList(Collections.singletonList(LABEL_VALUES)),
Point.create(Value.longValue(7), TEST_TIME),
null))),
Metric.create(
MetricDescriptor.create(
NAME,
DESCRIPTION,
UNIT,
Type.GAUGE_DOUBLE,
Collections.unmodifiableList(Collections.singletonList(LABEL_KEY))),
Collections.singletonList(
TimeSeries.createWithOnePoint(
Collections.unmodifiableList(Collections.singletonList(LABEL_VALUES)),
Point.create(Value.doubleValue(5.0), TEST_TIME),
null))));
}
@Test
public void empty_GetMetrics() {
assertThat(metricRegistry.getMetricProducer().getMetrics()).isEmpty();
}
}
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