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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.implcore.metrics.Gauge.DoubleGauge;
import io.opencensus.implcore.metrics.Gauge.LongGauge;
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.List;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Unit tests for {@link Gauge}. */
@RunWith(JUnit4.class)
public class GaugeTest {
private static final String NAME = "name";
private static final String DESCRIPTION = "description";
private static final String UNIT = "1";
private static final List<LabelKey> LABEL_KEYS =
Collections.unmodifiableList(
Collections.singletonList(LabelKey.create("key", "key description")));
private static final List<LabelValue> LABEL_VALUES =
Collections.unmodifiableList(Collections.singletonList(LabelValue.create("value")));
private static final Object OBJ = new Object();
private static final Timestamp TEST_TIME = Timestamp.create(1234, 123);
private final Gauge longGauge =
new LongGauge<Object>(
NAME,
DESCRIPTION,
UNIT,
LABEL_KEYS,
LABEL_VALUES,
OBJ,
new ToLongFunction<Object>() {
@Override
public long applyAsLong(Object value) {
return value.hashCode();
}
});
private final Gauge doubleGauge =
new DoubleGauge<Object>(
NAME,
DESCRIPTION,
UNIT,
LABEL_KEYS,
LABEL_VALUES,
OBJ,
new ToDoubleFunction<Object>() {
@Override
public double applyAsDouble(Object value) {
return value.hashCode();
}
});
private final TestClock testClock = TestClock.create(TEST_TIME);
@Test
public void longGauge_GetMetric() {
assertThat(longGauge.getMetric(testClock))
.isEqualTo(
Metric.create(
MetricDescriptor.create(NAME, DESCRIPTION, UNIT, Type.GAUGE_INT64, LABEL_KEYS),
Collections.singletonList(
TimeSeries.create(
LABEL_VALUES,
Collections.singletonList(
Point.create(Value.longValue(OBJ.hashCode()), TEST_TIME)),
null))));
}
@Test
public void doubleGauge_GetMetric() {
assertThat(doubleGauge.getMetric(testClock))
.isEqualTo(
Metric.create(
MetricDescriptor.create(NAME, DESCRIPTION, UNIT, Type.GAUGE_DOUBLE, LABEL_KEYS),
Collections.singletonList(
TimeSeries.create(
LABEL_VALUES,
Collections.singletonList(
Point.create(Value.doubleValue(OBJ.hashCode()), TEST_TIME)),
null))));
}
}
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