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ITClientIdTest.java
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ITClientIdTest.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.google.cloud.spanner.it;
import static com.google.common.truth.Truth.assertThat;
import com.google.cloud.spanner.DatabaseClient;
import com.google.cloud.spanner.DatabaseId;
import com.google.cloud.spanner.InstanceId;
import com.google.cloud.spanner.IntegrationTestEnv;
import com.google.cloud.spanner.Key;
import com.google.cloud.spanner.ParallelIntegrationTest;
import com.google.cloud.spanner.Spanner;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
import org.junit.ClassRule;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
@Category(ParallelIntegrationTest.class)
@RunWith(JUnit4.class)
public class ITClientIdTest {
@ClassRule public static IntegrationTestEnv env = new IntegrationTestEnv();
@Test
public void testClientId() throws Exception {
Spanner spanner = env.getTestHelper().getClient();
InstanceId instanceId = env.getTestHelper().getInstanceId();
DatabaseId databaseId = DatabaseId.of(instanceId, "my-database");
Set<String> ids = new HashSet<>();
for (int i = 0; i < 100; i++) {
try {
DatabaseClient client = spanner.getDatabaseClient(databaseId);
ids.add(client.getClientId());
client.singleUse().readRow("MyTable", Key.of(0), Arrays.asList("MyColumn"));
} catch (Exception e) {
// ignore
}
}
// All the database clients have used the same client id.
assertThat(ids).hasSize(1);
assertThat(ids.iterator().next()).isEqualTo("client-1");
}
}