test: try to consume rows until failure

README.md

@@ -19,7 +19,7 @@ If you are using Maven with [BOM][libraries-bom], add this to your pom.xml file:
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>libraries-bom</artifactId>
-      <version>26.45.0</version>
+      <version>26.47.0</version>
       <type>pom</type>
       <scope>import</scope>
     </dependency>

google-cloud-spanner/src/test/java/com/google/cloud/spanner/CloseSpannerWithOpenResultSetTest.java

@@ -96,7 +96,12 @@ public void testBatchClient_closedSpannerWithOpenResultSet_streamsAreCancelled()
       }
       ((SpannerImpl) spanner).close(1, TimeUnit.MILLISECONDS);
       // This should return an error as the stream is cancelled.
-      SpannerException exception = assertThrows(SpannerException.class, resultSet::next);
+      SpannerException exception =
+          assertThrows(
+              SpannerException.class,
+              () -> { //noinspection StatementWithEmptyBody
+                while (resultSet.next()) {}
+              });
       assertEquals(ErrorCode.CANCELLED, exception.getErrorCode());
     }
   }