From 316dbc8c33181a353cc95cbadd932f7f20544f4f Mon Sep 17 00:00:00 2001
From: suryasoma <suryasoma.9@gmail.com>
Date: Fri, 14 Apr 2023 10:39:44 -0700
Subject: [PATCH] adding integration test

---
 .../v1/stub/EnhancedBigQueryReadStub.java     |  4 ++
 .../storage/v1/it/ITBigQueryStorageTest.java  | 51 +++++++++++++++++++
 2 files changed, 55 insertions(+)

diff --git a/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/EnhancedBigQueryReadStub.java b/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/EnhancedBigQueryReadStub.java
index f39f0ab6d8..1d97541611 100644
--- a/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/EnhancedBigQueryReadStub.java
+++ b/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/EnhancedBigQueryReadStub.java
@@ -196,4 +196,8 @@ public void shutdownNow() {
   public boolean awaitTermination(long duration, TimeUnit unit) throws InterruptedException {
     return stub.awaitTermination(duration, unit);
   }
+
+  public BigQueryReadStubSettings getStubSettings() {
+    return stubSettings;
+  }
 }
diff --git a/google-cloud-bigquerystorage/src/test/java/com/google/cloud/bigquery/storage/v1/it/ITBigQueryStorageTest.java b/google-cloud-bigquerystorage/src/test/java/com/google/cloud/bigquery/storage/v1/it/ITBigQueryStorageTest.java
index b80c2c3e86..1164c548f7 100644
--- a/google-cloud-bigquerystorage/src/test/java/com/google/cloud/bigquery/storage/v1/it/ITBigQueryStorageTest.java
+++ b/google-cloud-bigquerystorage/src/test/java/com/google/cloud/bigquery/storage/v1/it/ITBigQueryStorageTest.java
@@ -21,7 +21,9 @@
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
 
+import com.google.api.gax.core.InstantiatingExecutorProvider;
 import com.google.api.gax.rpc.ServerStream;
 import com.google.cloud.RetryOption;
 import com.google.cloud.ServiceOptions;
@@ -44,6 +46,7 @@
 import com.google.cloud.bigquery.storage.v1.ReadRowsRequest;
 import com.google.cloud.bigquery.storage.v1.ReadRowsResponse;
 import com.google.cloud.bigquery.storage.v1.ReadSession;
+import com.google.cloud.bigquery.storage.v1.BigQueryReadSettings;
 import com.google.cloud.bigquery.storage.v1.ReadSession.TableModifiers;
 import com.google.cloud.bigquery.storage.v1.ReadSession.TableReadOptions;
 import com.google.cloud.bigquery.storage.v1.ReadStream;
@@ -806,6 +809,54 @@ public void testStructAndArraySqlTypes() throws InterruptedException, IOExceptio
     assertEquals(rowAssertMessage, new Utf8("abc"), structRecord.get("str_field"));
   }
 
+  @Test
+  public void testSimpleReadWithBackgroundExecutorProvider() throws IOException {
+    BigQueryReadSettings bigQueryReadSettings = BigQueryReadSettings
+            .newBuilder()
+            .setBackgroundExecutorProvider(
+                    InstantiatingExecutorProvider.newBuilder().setExecutorThreadCount(14).build())
+            .build();
+    // Overriding the default client
+    client = BigQueryReadClient.create(bigQueryReadSettings);
+    assertTrue(
+            client.getStub().getStubSettings().getBackgroundExecutorProvider() instanceof InstantiatingExecutorProvider);
+    assertEquals(
+            14,
+            ((InstantiatingExecutorProvider) client.getStub().getStubSettings().getBackgroundExecutorProvider())
+                    .getExecutorThreadCount());
+    String table =
+            BigQueryResource.FormatTableResource(
+                    /* projectId = */ "bigquery-public-data",
+                    /* datasetId = */ "samples",
+                    /* tableId = */ "shakespeare");
+
+    ReadSession session =
+            client.createReadSession(
+                    /* parent = */ parentProjectId,
+                    /* readSession = */ ReadSession.newBuilder()
+                            .setTable(table)
+                            .setDataFormat(DataFormat.AVRO)
+                            .build(),
+                    /* maxStreamCount = */ 1);
+    assertEquals(
+            String.format(
+                    "Did not receive expected number of streams for table '%s' CreateReadSession response:%n%s",
+                    table, session.toString()),
+            1,
+            session.getStreamsCount());
+
+    ReadRowsRequest readRowsRequest =
+            ReadRowsRequest.newBuilder().setReadStream(session.getStreams(0).getName()).build();
+
+    long rowCount = 0;
+    ServerStream<ReadRowsResponse> stream = client.readRowsCallable().call(readRowsRequest);
+    for (ReadRowsResponse response : stream) {
+      rowCount += response.getRowCount();
+    }
+
+    assertEquals(164_656, rowCount);
+  }
+
   /**
    * Reads to the specified row offset within the stream. If the stream does not have the desired
    * rows to read, it will read all of them.