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docs(sample): add IT for WriteToDefaultStream (#1158)
Fixes #1156
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stephaniewang526 committed Jun 29, 2021
1 parent fc4a5c0 commit 3280d7a0495a25f2509c9d4719439253e0fbaa5d
Showing with 96 additions and 0 deletions.
  1. +96 −0 samples/snippets/src/test/java/com/example/bigquerystorage/WriteToDefaultStreamIT.java
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/*
* Copyright 2021 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.bigquerystorage;

import static com.google.common.truth.Truth.assertThat;
import static junit.framework.TestCase.assertNotNull;

import com.google.cloud.bigquery.BigQuery;
import com.google.cloud.bigquery.BigQuery.DatasetDeleteOption;
import com.google.cloud.bigquery.BigQueryOptions;
import com.google.cloud.bigquery.DatasetId;
import com.google.cloud.bigquery.DatasetInfo;
import com.google.cloud.bigquery.Field;
import com.google.cloud.bigquery.Schema;
import com.google.cloud.bigquery.StandardSQLTypeName;
import com.google.cloud.bigquery.StandardTableDefinition;
import com.google.cloud.bigquery.TableId;
import com.google.cloud.bigquery.TableInfo;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import java.util.UUID;
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;

@RunWith(JUnit4.class)
public class WriteToDefaultStreamIT {

private static final String GOOGLE_CLOUD_PROJECT = System.getenv("GOOGLE_CLOUD_PROJECT");

private ByteArrayOutputStream bout;
private PrintStream out;
private BigQuery bigquery;
private String datasetName;
private String tableName;

private static void requireEnvVar(String varName) {
assertNotNull(
"Environment variable " + varName + " is required to perform these tests.",
System.getenv(varName));
}

@BeforeClass
public static void checkRequirements() {
requireEnvVar("GOOGLE_CLOUD_PROJECT");
}

@Before
public void setUp() {
bout = new ByteArrayOutputStream();
out = new PrintStream(bout);
System.setOut(out);

bigquery = BigQueryOptions.getDefaultInstance().getService();

// Create a new dataset and table for each test.
datasetName = "WRITE_STREAM_TEST" + UUID.randomUUID().toString().substring(0, 8);
tableName = "DEFAULT_STREAM_TEST" + UUID.randomUUID().toString().substring(0, 8);
Schema schema = Schema.of(Field.of("col1", StandardSQLTypeName.STRING));
bigquery.create(DatasetInfo.newBuilder(datasetName).build());
TableInfo tableInfo =
TableInfo.newBuilder(TableId.of(datasetName, tableName), StandardTableDefinition.of(schema))
.build();
bigquery.create(tableInfo);
}

@After
public void tearDown() {
bigquery.delete(
DatasetId.of(GOOGLE_CLOUD_PROJECT, datasetName), DatasetDeleteOption.deleteContents());
System.setOut(null);
}

@Test
public void testWriteToDefaultStream() throws Exception {
WriteToDefaultStream.writeToDefaultStream(GOOGLE_CLOUD_PROJECT, datasetName, tableName);
assertThat(bout.toString()).contains("Appended records successfully.");
}
}

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