Merge pull request #2831 from hogimn/test

Use CountDownLatch to coordinate the execution order

Author: hazendaz

src/test/java/org/apache/ibatis/datasource/pooled/PooledDataSourceTest.java

@@ -67,16 +67,19 @@ void shouldBlockUntilConnectionIsAvailableInPooledDataSource() throws Exception
   @Test
   void PoppedConnectionShouldBeNotEqualToClosedConnection() throws Exception {
     Connection connectionToClose = dataSource.getConnection();
+    CountDownLatch latch = new CountDownLatch(1);
 
     new Thread(() -> {
       try {
+        latch.await();
         assertNotEquals(connectionToClose, dataSource.getConnection());
       } catch (Exception e) {
         throw new RuntimeException(e);
       }
     }).start();
 
     connectionToClose.close();
+    latch.countDown();
   }
 
   @Test