refactor logging

src/test/java/com/alibaba/druid/bvt/pool/dynamic/DruidDataSourceStatLoggerImplTest.java

@@ -0,0 +1,49 @@
+package com.alibaba.druid.bvt.pool.dynamic;
+
+import java.lang.reflect.Field;
+
+import junit.framework.TestCase;
+
+import org.junit.Assert;
+
+import com.alibaba.druid.pool.DruidDataSource;
+import com.alibaba.druid.pool.DruidDataSourceStatLogger;
+import com.alibaba.druid.pool.DruidDataSourceStatLoggerImpl;
+import com.alibaba.druid.support.logging.Log;
+
+public class DruidDataSourceStatLoggerImplTest extends TestCase {
+
+    private DruidDataSource dataSource;
+
+    private Log             statLog;
+
+    protected void setUp() throws Exception {
+        Field logField = DruidDataSourceStatLoggerImpl.class.getDeclaredField("LOG");
+        logField.setAccessible(true);
+        statLog = (Log) logField.get(null);
+
+        statLog.resetStat();
+
+        dataSource = new DruidDataSource();
+        dataSource.setUrl("jdbc:mock:xxx");
+        dataSource.setTestOnBorrow(false);
+        dataSource.setConnectionProperties("a=3;b=4");
+        dataSource.setFilters("stat");
+        dataSource.init();
+
+    }
+
+    protected void tearDown() throws Exception {
+        dataSource.close();
+    }
+
+    public void test_connectPropertiesChange() throws Exception {
+        Assert.assertTrue(dataSource.isWrapperFor(DruidDataSourceStatLogger.class));
+        Assert.assertTrue(dataSource.isWrapperFor(DruidDataSourceStatLoggerImpl.class));
+        DruidDataSourceStatLoggerImpl loggerImpl = dataSource.unwrap(DruidDataSourceStatLoggerImpl.class);
+        Assert.assertSame(statLog, loggerImpl.getLogger());
+        
+        dataSource.setConnectionProperties("druid.stat.loggerName=xxx");
+        Assert.assertNotSame(statLog, loggerImpl.getLogger());
+    }
+}