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TimeSeriesIT.java
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TimeSeriesIT.java
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/*
* Copyright 2020 Google LLC
*
* 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 com.example.monitoring;
import static com.google.common.truth.Truth.assertThat;
import static junit.framework.TestCase.assertNotNull;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import org.junit.After;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Tests for time series sample. */
@RunWith(JUnit4.class)
public class TimeSeriesIT {
private static final String PROJECT_ID = System.getenv("GOOGLE_CLOUD_PROJECT");
private final String filter =
String.format("metric.type=\"compute.googleapis.com/instance/cpu/utilization\"");
private ByteArrayOutputStream bout;
private PrintStream out;
private PrintStream originalPrintStream;
private static void requireEnvVar(String varName) {
assertNotNull(
"Environment variable '%s' is required to perform these tests.".format(varName),
System.getenv(varName));
}
@BeforeClass
public static void checkRequirements() {
requireEnvVar("GOOGLE_CLOUD_PROJECT");
}
@Before
public void setUp() {
bout = new ByteArrayOutputStream();
out = new PrintStream(bout);
originalPrintStream = System.out;
System.setOut(out);
}
@After
public void tearDown() {
// restores print statements in the original method
System.out.flush();
System.setOut(originalPrintStream);
}
@Test
public void testCreateTimeSeries() throws IOException {
CreateTimeSeries.createTimeSeries(PROJECT_ID);
assertThat(bout.toString()).contains("Done writing time series value");
}
@Test
public void testListTimeSeries() throws IOException {
ListTimeSeries.listTimeSeries(filter, PROJECT_ID);
assertThat(bout.toString()).contains("Got timeseries:");
}
@Test
public void testListTimeSeriesHeaders() throws IOException {
TimeSeriesHeadersList.listTimeSeriesHeaders(PROJECT_ID, filter);
assertThat(bout.toString()).contains("Got timeseries headers:");
}
}