package com.alibaba.druid.bvt.sql.eval; import org.junit.Assert; import junit.framework.TestCase; import com.alibaba.druid.sql.visitor.SQLEvalVisitorUtils; import com.alibaba.druid.util.JdbcConstants; public class EvalIsNullTest extends TestCase { public void test_null() throws Exception { Assert.assertEquals(false, SQLEvalVisitorUtils.evalExpr(JdbcConstants.MYSQL, "? is null", 0)); Assert.assertEquals(true, SQLEvalVisitorUtils.evalExpr(JdbcConstants.MYSQL, "? is null", (Object) null)); } }