support dynamic change url、user、password

src/test/java/com/alibaba/druid/benckmark/wall/WallBenchmarkTest.java

@@ -0,0 +1,29 @@
+package com.alibaba.druid.benckmark.wall;
+
+import junit.framework.TestCase;
+
+import com.alibaba.druid.wall.spi.MySqlWallProvider;
+
+public class WallBenchmarkTest extends TestCase {
+
+    MySqlWallProvider       provider = new MySqlWallProvider();
+
+    public final static int COUNT    = 1000 * 1;
+
+    public void test_0() throws Exception {
+        String sql = "select * from t";
+        for (int i = 0; i < 10; ++i) {
+            provider.clearCache();
+            long startMillis = System.currentTimeMillis();
+            perf(sql);
+            long millis = System.currentTimeMillis() - startMillis;
+            System.out.println("millis : " + millis);
+        }
+    }
+
+    public void perf(String sql) {
+        for (int i = 0; i < COUNT; ++i) {
+            provider.check(sql + " WHERE FID = " + i);
+        }
+    }
+}

src/test/java/com/alibaba/druid/bvt/pool/basic/DataSourceTest3.java

@@ -1,5 +1,6 @@
 package com.alibaba.druid.bvt.pool.basic;
 
+import java.sql.Connection;
 import java.sql.SQLException;
 import java.util.Collections;
 import java.util.Properties;
@@ -55,19 +56,32 @@ public class DataSourceTest3 extends TestCase {
         JdbcStatManager.getInstance().setStatContext(null);
     }
 
-    public void test_prepareStatement_error() throws Exception {
-        DruidPooledConnection conn = dataSource.getConnection().unwrap(DruidPooledConnection.class);
-
-        conn.close();
+    public void test_setUser() throws Exception {
+        Connection real;
 
         {
-            Exception error = null;
-            try {
-                dataSource.setUsername("xxx");
-            } catch (Exception ex) {
-                error = ex;
-            }
-            Assert.assertNotNull(error);
+            DruidPooledConnection conn = dataSource.getConnection().unwrap(DruidPooledConnection.class);
+            real = conn.getConnection();
+            conn.close();
+        }
+        
+        {
+            DruidPooledConnection conn = dataSource.getConnection().unwrap(DruidPooledConnection.class);
+            Assert.assertSame(real, conn.getConnection());
+            conn.close();
+        }
+
+        dataSource.setUsername(dataSource.getUsername());
+        {
+            DruidPooledConnection conn = dataSource.getConnection().unwrap(DruidPooledConnection.class);
+            Assert.assertSame(real, conn.getConnection());
+            conn.close();
+        }
+        dataSource.setUsername("xxx_u1");
+        {
+            DruidPooledConnection conn = dataSource.getConnection().unwrap(DruidPooledConnection.class);
+            Assert.assertNotSame(real, conn.getConnection());
+            conn.close();
         }
     }
 
@@ -159,19 +173,32 @@ public class DataSourceTest3 extends TestCase {
         }
     }
 
-    public void test_error_7() throws Exception {
-        DruidPooledConnection conn = dataSource.getConnection().unwrap(DruidPooledConnection.class);
-
-        conn.close();
+    public void test_setPassword() throws Exception {
+        Connection real;
 
         {
-            Exception error = null;
-            try {
-                dataSource.setPassword("xx");
-            } catch (Exception ex) {
-                error = ex;
-            }
-            Assert.assertNotNull(error);
+            DruidPooledConnection conn = dataSource.getConnection().unwrap(DruidPooledConnection.class);
+            real = conn.getConnection();
+            conn.close();
+        }
+        
+        {
+            DruidPooledConnection conn = dataSource.getConnection().unwrap(DruidPooledConnection.class);
+            Assert.assertSame(real, conn.getConnection());
+            conn.close();
+        }
+
+        dataSource.setPassword(dataSource.getPassword());
+        {
+            DruidPooledConnection conn = dataSource.getConnection().unwrap(DruidPooledConnection.class);
+            Assert.assertSame(real, conn.getConnection());
+            conn.close();
+        }
+        dataSource.setPassword("xxx_pass");
+        {
+            DruidPooledConnection conn = dataSource.getConnection().unwrap(DruidPooledConnection.class);
+            Assert.assertNotSame(real, conn.getConnection());
+            conn.close();
         }
     }
 
@@ -250,21 +277,32 @@ public class DataSourceTest3 extends TestCase {
         }
     }
 
-    public void test_error_11() throws Exception {
-        DruidPooledConnection conn = dataSource.getConnection().unwrap(DruidPooledConnection.class);
-
-        conn.close();
-
-        dataSource.getUrl();
+    public void test_setUrl() throws Exception {
+        Connection real;
 
         {
-            Exception error = null;
-            try {
-                dataSource.setUrl("x");
-            } catch (Exception ex) {
-                error = ex;
-            }
-            Assert.assertNotNull(error);
+            DruidPooledConnection conn = dataSource.getConnection().unwrap(DruidPooledConnection.class);
+            real = conn.getConnection();
+            conn.close();
+        }
+        
+        {
+            DruidPooledConnection conn = dataSource.getConnection().unwrap(DruidPooledConnection.class);
+            Assert.assertSame(real, conn.getConnection());
+            conn.close();
+        }
+
+        dataSource.setUrl(dataSource.getUrl());
+        {
+            DruidPooledConnection conn = dataSource.getConnection().unwrap(DruidPooledConnection.class);
+            Assert.assertSame(real, conn.getConnection());
+            conn.close();
+        }
+        dataSource.setUrl("jdbc:mock:xxx_123");
+        {
+            DruidPooledConnection conn = dataSource.getConnection().unwrap(DruidPooledConnection.class);
+            Assert.assertNotSame(real, conn.getConnection());
+            conn.close();
         }
     }