snuyanzin commented on code in PR #28:
URL:
https://github.com/apache/flink-connector-gcp-pubsub/pull/28#discussion_r1632391131
##########
flink-connector-gcp-pubsub-e2e-tests/src/test/java/org/apache/flink/connector/gcp/pubsub/sink/PubSubSinkV2ITTests.java:
##########
@@ -0,0 +1,114 @@
+package org.apache.flink.connector.gcp.pubsub.sink;
+
+import org.apache.flink.api.common.eventtime.WatermarkStrategy;
+import org.apache.flink.api.common.serialization.SimpleStringSchema;
+import org.apache.flink.api.common.typeinfo.BasicTypeInfo;
+import org.apache.flink.api.common.typeinfo.TypeInformation;
+import
org.apache.flink.connector.datagen.functions.FromElementsGeneratorFunction;
+import org.apache.flink.connector.datagen.source.DataGeneratorSource;
+import org.apache.flink.connector.gcp.pubsub.sink.config.GcpPublisherConfig;
+import org.apache.flink.connector.gcp.pubsub.sink.util.PubsubHelper;
+import org.apache.flink.connector.gcp.pubsub.sink.util.TestChannelProvider;
+import org.apache.flink.streaming.api.datastream.DataStreamSource;
+import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
+import
org.apache.flink.streaming.connectors.gcp.pubsub.emulator.EmulatorCredentialsProvider;
+import
org.apache.flink.streaming.connectors.gcp.pubsub.test.DockerImageVersions;
+import org.apache.flink.test.junit5.MiniClusterExtension;
+import org.apache.flink.util.TestLogger;
+
+import com.google.pubsub.v1.ReceivedMessage;
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.junit.jupiter.api.parallel.Execution;
+import org.junit.jupiter.api.parallel.ExecutionMode;
+import org.testcontainers.containers.PubSubEmulatorContainer;
+import org.testcontainers.junit.jupiter.Container;
+import org.testcontainers.junit.jupiter.Testcontainers;
+import org.testcontainers.utility.DockerImageName;
+
+import java.io.IOException;
+import java.util.List;
+
+/** Integration tests for {@link PubSubSinkV2} using {@link
PubSubEmulatorContainer}. */
+@ExtendWith(MiniClusterExtension.class)
+@Execution(ExecutionMode.CONCURRENT)
+@Testcontainers
+class PubSubSinkV2ITTests extends TestLogger {
+
+ private static final String PROJECT_ID = "test-project";
+
+ private static final String TOPIC_ID = "test-topic";
+
+ private static final String SUBSCRIPTION_ID = "test-subscription";
+
+ private StreamExecutionEnvironment env;
+
+ @Container
+ private static final PubSubEmulatorContainer PUB_SUB_EMULATOR_CONTAINER =
+ new PubSubEmulatorContainer(
+
DockerImageName.parse(DockerImageVersions.GOOGLE_CLOUD_PUBSUB_EMULATOR));
+
+ private PubsubHelper pubSubHelper;
+
+ @BeforeEach
+ void setUp() throws IOException {
+ env = StreamExecutionEnvironment.getExecutionEnvironment();
+ env.setParallelism(1);
+ pubSubHelper = new
PubsubHelper(PUB_SUB_EMULATOR_CONTAINER.getEmulatorEndpoint());
+
+ pubSubHelper.createTopic(PROJECT_ID, TOPIC_ID);
+ pubSubHelper.createSubscription(PROJECT_ID, SUBSCRIPTION_ID,
PROJECT_ID, TOPIC_ID);
+ }
+
+ @AfterEach
+ void tearDown() throws IOException {
+ pubSubHelper.deleteSubscription(PROJECT_ID, SUBSCRIPTION_ID);
+ pubSubHelper.deleteTopic(PROJECT_ID, TOPIC_ID);
+ pubSubHelper.close();
+ }
+
+ @Test
+ void pubSubSinkV2DeliversRecords() throws Exception {
+ String[] elements = new String[] {"test1", "test2", "test3"};
+ DataStreamSource<String> stream =
+ env.fromSource(
+ new DataGeneratorSource<>(
+ new FromElementsGeneratorFunction<>(
+ BasicTypeInfo.STRING_TYPE_INFO,
elements),
+ elements.length,
+ TypeInformation.of(String.class)),
+ WatermarkStrategy.noWatermarks(),
+ "DataGeneratorSource");
+
+ GcpPublisherConfig gcpPublisherConfig =
+ GcpPublisherConfig.builder()
+
.setCredentialsProvider(EmulatorCredentialsProvider.create())
+ .setTransportChannelProvider(
+ new TestChannelProvider(
+
PUB_SUB_EMULATOR_CONTAINER.getEmulatorEndpoint()))
+ .build();
+
+ PubSubSinkV2<String> sink =
+ PubSubSinkV2.<String>builder()
+ .setProjectId(PROJECT_ID)
+ .setTopicId(TOPIC_ID)
+ .setSerializationSchema(new SimpleStringSchema())
+ .setGcpPublisherConfig(gcpPublisherConfig)
+ .setFailOnError(true)
+ .build();
+ stream.sinkTo(sink);
+ int maxNumberOfMessages = 100;
Review Comment:
why can't we use amount equal to size of `elements` here?
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