| /* |
| * 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.metrics; |
| |
| import io.opencensus.common.ToLongFunction; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| 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 DerivedLongGauge}. */ |
| // TODO(mayurkale): Add more tests, once DerivedLongGauge plugs-in into the registry. |
| @RunWith(JUnit4.class) |
| public class DerivedLongGaugeTest { |
| @Rule public ExpectedException thrown = ExpectedException.none(); |
| |
| private static final String NAME = "name"; |
| private static final String DESCRIPTION = "description"; |
| private static final String UNIT = "1"; |
| private static final List<LabelKey> LABEL_KEY = |
| Collections.singletonList(LabelKey.create("key", "key description")); |
| private static final List<LabelValue> LABEL_VALUES = |
| Collections.singletonList(LabelValue.create("value")); |
| private static final List<LabelValue> EMPTY_LABEL_VALUES = new ArrayList<LabelValue>(); |
| |
| private final DerivedLongGauge derivedLongGauge = |
| DerivedLongGauge.newNoopDerivedLongGauge(NAME, DESCRIPTION, UNIT, LABEL_KEY); |
| private static final ToLongFunction<Object> longFunction = |
| new ToLongFunction<Object>() { |
| @Override |
| public long applyAsLong(Object value) { |
| return 5; |
| } |
| }; |
| |
| @Test |
| public void noopCreateTimeSeries_WithNullLabelValues() { |
| thrown.expect(NullPointerException.class); |
| thrown.expectMessage("labelValues"); |
| derivedLongGauge.createTimeSeries(null, null, longFunction); |
| } |
| |
| @Test |
| public void noopCreateTimeSeries_WithNullElement() { |
| List<LabelValue> labelValues = Collections.singletonList(null); |
| thrown.expect(NullPointerException.class); |
| thrown.expectMessage("labelValue element should not be null."); |
| derivedLongGauge.createTimeSeries(labelValues, null, longFunction); |
| } |
| |
| @Test |
| public void noopCreateTimeSeries_WithInvalidLabelSize() { |
| thrown.expect(IllegalArgumentException.class); |
| thrown.expectMessage("Incorrect number of labels."); |
| derivedLongGauge.createTimeSeries(EMPTY_LABEL_VALUES, null, longFunction); |
| } |
| |
| @Test |
| public void createTimeSeries_WithNullFunction() { |
| thrown.expect(NullPointerException.class); |
| thrown.expectMessage("function"); |
| derivedLongGauge.createTimeSeries(LABEL_VALUES, null, null); |
| } |
| |
| @Test |
| public void noopRemoveTimeSeries_WithNullLabelValues() { |
| thrown.expect(NullPointerException.class); |
| thrown.expectMessage("labelValues"); |
| derivedLongGauge.removeTimeSeries(null); |
| } |
| } |