add testcase

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

@@ -0,0 +1,32 @@
+package com.alibaba.druid.bvt.pool;
+
+import junit.framework.Assert;
+import junit.framework.TestCase;
+
+import com.alibaba.druid.filter.stat.StatFilter;
+import com.alibaba.druid.pool.DruidDataSource;
+
+
+public class SlowSqlMillisTest extends TestCase {
+    private DruidDataSource dataSource;
+
+    protected void setUp() throws Exception {
+        dataSource = new DruidDataSource();
+        dataSource.setUrl("jdbc:wrap-jdbc:jdbc:mock:xxx");
+        dataSource.setTestOnBorrow(false);
+        dataSource.setTestOnReturn(false);
+        dataSource.setTestWhileIdle(false);
+        dataSource.setConnectionProperties("druid.stat.slowSqlMillis=500");
+        dataSource.setFilters("stat");
+        dataSource.init();
+    }
+
+    protected void tearDown() throws Exception {
+        dataSource.close();
+    }
+
+    public void test_connect() throws Exception {
+        StatFilter filter = (StatFilter) dataSource.getProxyFilters().get(0);
+        Assert.assertEquals(500, filter.getSlowSqlMillis());
+    }
+}