improve sqlwall

src/test/java/com/alibaba/druid/bvt/filter/wall/HintTest.java

@@ -0,0 +1,23 @@
+package com.alibaba.druid.bvt.filter.wall;
+
+import junit.framework.TestCase;
+
+import org.junit.Assert;
+
+import com.alibaba.druid.wall.WallConfig;
+import com.alibaba.druid.wall.WallUtils;
+
+public class HintTest extends TestCase {
+
+    public void test_false() throws Exception {
+        WallConfig config = new WallConfig();
+        config.setHintAllow(false);
+        String sql = "select * from person where id = '3'/**/union select 0,1,v from (select 1,2,user/*!() as v*/) a where '1'<>''";
+        Assert.assertFalse(WallUtils.isValidateMySql(sql, config)); //
+    }
+
+    public void test_true() throws Exception {
+        String sql = "select * from person where id = '3'/**/union select 0,1,v from (select 1,2,user/*!() as v*/) a where '1'<>''";
+        Assert.assertTrue(WallUtils.isValidateMySql(sql)); //
+    }
+}