| /* |
| * Copyright 2019 The gRPC 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.grpc.services; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| |
| import io.grpc.Context; |
| import java.util.Map; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Tests for {@link CallMetricRecorder}. */ |
| @RunWith(JUnit4.class) |
| public class CallMetricRecorderTest { |
| |
| private final CallMetricRecorder recorder = new CallMetricRecorder(); |
| |
| @Test |
| public void dumpGivesEmptyResultWhenNoSavedMetricValues() { |
| assertThat(recorder.finalizeAndDump()).isEmpty(); |
| } |
| |
| @Test |
| public void dumpDumpsAllSavedMetricValues() { |
| recorder.recordCallMetric("cost1", 154353.423); |
| recorder.recordCallMetric("cost2", 0.1367); |
| recorder.recordCallMetric("cost3", 1437.34); |
| |
| Map<String, Double> dump = recorder.finalizeAndDump(); |
| assertThat(dump) |
| .containsExactly("cost1", 154353.423, "cost2", 0.1367, "cost3", 1437.34); |
| } |
| |
| @Test |
| public void noMetricsRecordedAfterSnapshot() { |
| Map<String, Double> initDump = recorder.finalizeAndDump(); |
| recorder.recordCallMetric("cost", 154353.423); |
| assertThat(recorder.finalizeAndDump()).isEqualTo(initDump); |
| } |
| |
| @Test |
| public void lastValueWinForMetricsWithSameName() { |
| recorder.recordCallMetric("cost1", 3412.5435); |
| recorder.recordCallMetric("cost2", 6441.341); |
| recorder.recordCallMetric("cost1", 6441.341); |
| recorder.recordCallMetric("cost1", 4654.67); |
| recorder.recordCallMetric("cost2", 75.83); |
| Map<String, Double> dump = recorder.finalizeAndDump(); |
| assertThat(dump) |
| .containsExactly("cost1", 4654.67, "cost2", 75.83); |
| } |
| |
| @Test |
| public void getCurrent_sameEnabledInstance() { |
| CallMetricRecorder recorder = new CallMetricRecorder(); |
| Context ctx = Context.ROOT.withValue(CallMetricRecorder.CONTEXT_KEY, recorder); |
| Context origCtx = ctx.attach(); |
| try { |
| assertThat(CallMetricRecorder.getCurrent()).isSameInstanceAs(recorder); |
| assertThat(recorder.isDisabled()).isFalse(); |
| } finally { |
| ctx.detach(origCtx); |
| } |
| } |
| |
| @Test |
| public void getCurrent_blankContext() { |
| Context blankCtx = Context.ROOT; |
| Context origCtx = blankCtx.attach(); |
| try { |
| assertThat(CallMetricRecorder.getCurrent().isDisabled()).isTrue(); |
| } finally { |
| blankCtx.detach(origCtx); |
| } |
| } |
| } |