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/*
* Copyright 2017, 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.stats;
import static com.google.common.truth.Truth.assertThat;
import io.opencensus.common.Duration;
import io.opencensus.common.Timestamp;
import io.opencensus.stats.Aggregation.Sum;
import io.opencensus.stats.Measure.MeasureDouble;
import io.opencensus.stats.View.AggregationWindow.Cumulative;
import io.opencensus.stats.View.AggregationWindow.Interval;
import io.opencensus.stats.View.Name;
import io.opencensus.stats.ViewData.AggregationWindowData.CumulativeData;
import io.opencensus.stats.ViewData.AggregationWindowData.IntervalData;
import io.opencensus.tags.TagKey;
import java.util.Arrays;
import java.util.Set;
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 NoopStats#newNoopViewManager}. */
@RunWith(JUnit4.class)
public final class NoopViewManagerTest {
private static final MeasureDouble MEASURE =
Measure.MeasureDouble.create("my measure", "description", "s");
private static final TagKey KEY = TagKey.create("KEY");
private static final Name VIEW_NAME = Name.create("my view");
private static final String VIEW_DESCRIPTION = "view description";
private static final Sum AGGREGATION = Sum.create();
private static final Cumulative CUMULATIVE = Cumulative.create();
private static final Duration TEN_SECONDS = Duration.create(10, 0);
private static final Interval INTERVAL = Interval.create(TEN_SECONDS);
@Rule public final ExpectedException thrown = ExpectedException.none();
@Test
public void noopViewManager_RegisterView_DisallowRegisteringDifferentViewWithSameName() {
final View view1 =
View.create(
VIEW_NAME, "description 1", MEASURE, AGGREGATION, Arrays.asList(KEY), CUMULATIVE);
final View view2 =
View.create(
VIEW_NAME, "description 2", MEASURE, AGGREGATION, Arrays.asList(KEY), CUMULATIVE);
ViewManager viewManager = NoopStats.newNoopViewManager();
viewManager.registerView(view1);
try {
thrown.expect(IllegalArgumentException.class);
thrown.expectMessage("A different view with the same name already exists.");
viewManager.registerView(view2);
} finally {
assertThat(viewManager.getView(VIEW_NAME).getView()).isEqualTo(view1);
}
}
@Test
public void noopViewManager_RegisterView_AllowRegisteringSameViewTwice() {
View view =
View.create(
VIEW_NAME, VIEW_DESCRIPTION, MEASURE, AGGREGATION, Arrays.asList(KEY), CUMULATIVE);
ViewManager viewManager = NoopStats.newNoopViewManager();
viewManager.registerView(view);
viewManager.registerView(view);
}
@Test
public void noopViewManager_RegisterView_DisallowNull() {
ViewManager viewManager = NoopStats.newNoopViewManager();
thrown.expect(NullPointerException.class);
viewManager.registerView(null);
}
@Test
public void noopViewManager_GetView_GettingNonExistentViewReturnsNull() {
ViewManager viewManager = NoopStats.newNoopViewManager();
assertThat(viewManager.getView(VIEW_NAME)).isNull();
}
@Test
public void noopViewManager_GetView_Cumulative() {
View view =
View.create(
VIEW_NAME, VIEW_DESCRIPTION, MEASURE, AGGREGATION, Arrays.asList(KEY), CUMULATIVE);
ViewManager viewManager = NoopStats.newNoopViewManager();
viewManager.registerView(view);
ViewData viewData = viewManager.getView(VIEW_NAME);
assertThat(viewData.getView()).isEqualTo(view);
assertThat(viewData.getAggregationMap()).isEmpty();
assertThat(viewData.getStart()).isEqualTo(Timestamp.create(0, 0));
assertThat(viewData.getEnd()).isEqualTo(Timestamp.create(0, 0));
assertThat(viewData.getWindowData())
.isEqualTo(CumulativeData.create(Timestamp.create(0, 0), Timestamp.create(0, 0)));
}
@Test
public void noopViewManager_GetView_Interval() {
View view =
View.create(
VIEW_NAME, VIEW_DESCRIPTION, MEASURE, AGGREGATION, Arrays.asList(KEY), INTERVAL);
ViewManager viewManager = NoopStats.newNoopViewManager();
viewManager.registerView(view);
ViewData viewData = viewManager.getView(VIEW_NAME);
assertThat(viewData.getView()).isEqualTo(view);
assertThat(viewData.getAggregationMap()).isEmpty();
assertThat(viewData.getWindowData()).isEqualTo(IntervalData.create(Timestamp.create(0, 0)));
}
@Test
public void noopViewManager_GetView_DisallowNull() {
ViewManager viewManager = NoopStats.newNoopViewManager();
thrown.expect(NullPointerException.class);
viewManager.getView(null);
}
@Test
public void getAllExportedViews() {
ViewManager viewManager = NoopStats.newNoopViewManager();
assertThat(viewManager.getAllExportedViews()).isEmpty();
View cumulativeView1 =
View.create(
View.Name.create("View 1"),
VIEW_DESCRIPTION,
MEASURE,
AGGREGATION,
Arrays.asList(KEY),
CUMULATIVE);
View cumulativeView2 =
View.create(
View.Name.create("View 2"),
VIEW_DESCRIPTION,
MEASURE,
AGGREGATION,
Arrays.asList(KEY),
CUMULATIVE);
View intervalView =
View.create(
View.Name.create("View 3"),
VIEW_DESCRIPTION,
MEASURE,
AGGREGATION,
Arrays.asList(KEY),
INTERVAL);
viewManager.registerView(cumulativeView1);
viewManager.registerView(cumulativeView2);
viewManager.registerView(intervalView);
// Only cumulative views should be exported.
assertThat(viewManager.getAllExportedViews()).containsExactly(cumulativeView1, cumulativeView2);
}
@Test
public void getAllExportedViews_ResultIsUnmodifiable() {
ViewManager viewManager = NoopStats.newNoopViewManager();
View view1 =
View.create(
View.Name.create("View 1"), VIEW_DESCRIPTION, MEASURE, AGGREGATION, Arrays.asList(KEY));
viewManager.registerView(view1);
Set<View> exported = viewManager.getAllExportedViews();
View view2 =
View.create(
View.Name.create("View 2"), VIEW_DESCRIPTION, MEASURE, AGGREGATION, Arrays.asList(KEY));
thrown.expect(UnsupportedOperationException.class);
exported.add(view2);
}
}
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