Add test

Author: ennuite

flight/flight-sql-jdbc-core/src/test/java/org/apache/arrow/driver/jdbc/ConnectionTest.java

@@ -16,6 +16,7 @@
  */
 package org.apache.arrow.driver.jdbc;
 
+import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
@@ -698,4 +699,40 @@ public String visit(String value) {
       assertEquals(catalog, actualCatalog);
     }
   }
+
+  @Test
+  public void testStatementsClosedOnConnectionClose() throws Exception {
+    // create a connection
+    final Properties properties = new Properties();
+    properties.put(ArrowFlightConnectionProperty.HOST.camelName(), "localhost");
+    properties.put(
+        ArrowFlightConnectionProperty.PORT.camelName(), FLIGHT_SERVER_TEST_EXTENSION.getPort());
+    properties.put(ArrowFlightConnectionProperty.USER.camelName(), userTest);
+    properties.put(ArrowFlightConnectionProperty.PASSWORD.camelName(), passTest);
+    properties.put("useEncryption", false);
+
+    Connection connection =
+        DriverManager.getConnection(
+            "jdbc:arrow-flight-sql://"
+                + FLIGHT_SERVER_TEST_EXTENSION.getHost()
+                + ":"
+                + FLIGHT_SERVER_TEST_EXTENSION.getPort(),
+            properties);
+
+    // create some statements
+    int numStatements = 3;
+    Statement[] statements = new Statement[numStatements];
+    for (int i = 0; i < numStatements; i++) {
+      statements[i] = connection.createStatement();
+      assertFalse(statements[i].isClosed());
+    }
+
+    // close the connection
+    connection.close();
+
+    // assert the statements are closed
+    for (int i = 0; i < numStatements; i++) {
+      assertTrue(statements[i].isClosed());
+    }
+  }
 }