bug fixed for support create/destroy scheduler

src/test/java/com/alibaba/druid/bvt/pool/CreateSchedulerTest.java

@@ -0,0 +1,46 @@
+package com.alibaba.druid.bvt.pool;
+
+import java.sql.Connection;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+
+import junit.framework.TestCase;
+
+import org.junit.Assert;
+
+import com.alibaba.druid.pool.DruidDataSource;
+
+public class CreateSchedulerTest extends TestCase {
+
+    private DruidDataSource          dataSource;
+    private ScheduledExecutorService createScheduler;
+
+    protected void setUp() throws Exception {
+        createScheduler = Executors.newScheduledThreadPool(1);
+
+        dataSource = new DruidDataSource();
+        dataSource.setUrl("jdbc:mock:xxx");
+        dataSource.setDestroyScheduler(createScheduler);
+        dataSource.setMinEvictableIdleTimeMillis(10);
+        dataSource.setTimeBetweenEvictionRunsMillis(10);
+    }
+
+    protected void tearDown() throws Exception {
+        dataSource.close();
+        createScheduler.shutdown();
+    }
+
+    public void test_connectAndClose() throws Exception {
+        Connection[] connections = new Connection[8];
+        for (int i = 0; i < connections.length; ++i) {
+            connections[i] = dataSource.getConnection();
+        }
+        
+        for (int i = 0; i < connections.length; ++i) {
+            connections[i].close();
+        }
+        
+        Thread.sleep(100);
+        Assert.assertEquals(0, dataSource.getPoolingCount());
+    }
+}

src/test/java/com/alibaba/druid/bvt/pool/DestorySchedulerTest.java

@@ -0,0 +1,46 @@
+package com.alibaba.druid.bvt.pool;
+
+import java.sql.Connection;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+
+import junit.framework.TestCase;
+
+import org.junit.Assert;
+
+import com.alibaba.druid.pool.DruidDataSource;
+
+public class DestorySchedulerTest extends TestCase {
+
+    private DruidDataSource          dataSource;
+    private ScheduledExecutorService destroyScheduler;
+
+    protected void setUp() throws Exception {
+        destroyScheduler = Executors.newScheduledThreadPool(1);
+
+        dataSource = new DruidDataSource();
+        dataSource.setUrl("jdbc:mock:xxx");
+        dataSource.setDestroyScheduler(destroyScheduler);
+        dataSource.setMinEvictableIdleTimeMillis(10);
+        dataSource.setTimeBetweenEvictionRunsMillis(10);
+    }
+
+    protected void tearDown() throws Exception {
+        dataSource.close();
+        destroyScheduler.shutdown();
+    }
+
+    public void test_connectAndClose() throws Exception {
+        Connection[] connections = new Connection[8];
+        for (int i = 0; i < connections.length; ++i) {
+            connections[i] = dataSource.getConnection();
+        }
+        
+        for (int i = 0; i < connections.length; ++i) {
+            connections[i].close();
+        }
+        
+        Thread.sleep(100);
+        Assert.assertEquals(0, dataSource.getPoolingCount());
+    }
+}