Merge pull request #800 from wenshao/master

bug fixed for issue 796

src/test/java/com/alibaba/druid/bvt/proxy/PreparedStatementProxyImplGetParametersTest.java

@@ -0,0 +1,49 @@
+package com.alibaba.druid.bvt.proxy;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.util.Map;
+
+import org.junit.Assert;
+
+import junit.framework.TestCase;
+
+import com.alibaba.druid.proxy.jdbc.JdbcParameter;
+import com.alibaba.druid.proxy.jdbc.PreparedStatementProxy;
+import com.alibaba.druid.util.JdbcUtils;
+
+public class PreparedStatementProxyImplGetParametersTest extends TestCase {
+
+    private String     url = "jdbc:wrap-jdbc:filters=default:name=driverTest:jdbc:mock:xxx";
+    private Connection conn;
+
+    protected void setUp() throws Exception {
+        conn = DriverManager.getConnection(url);
+    }
+
+    protected void tearDown() throws Exception {
+        JdbcUtils.close(conn);
+    }
+
+    public void test_get_parameters() throws Exception {
+        final PreparedStatementProxy stmt = (PreparedStatementProxy) conn.prepareStatement("select 1");
+
+        {
+            Map<Integer, JdbcParameter> paramMap = stmt.getParameters();
+            Assert.assertNotNull(paramMap);
+            Assert.assertEquals(paramMap.size(), 0);
+        }
+        stmt.setInt(1, 1);
+        {
+            Map<Integer, JdbcParameter> paramMap1 = stmt.getParameters();
+            Assert.assertNotNull(paramMap1);
+   
+            Map<Integer, JdbcParameter> paramMap2 = stmt.getParameters();
+            Assert.assertNotNull(paramMap2);
+            
+            Assert.assertSame(paramMap1, paramMap2);
+            Assert.assertEquals(paramMap1.size(), 1);
+        }
+        stmt.close();
+    }
+}