package com.alibaba.druid.bvt.sql; import junit.framework.TestCase; import org.junit.Assert; import com.alibaba.druid.sql.ast.expr.SQLUnaryExpr; import com.alibaba.druid.sql.dialect.mysql.parser.MySqlExprParser; public class EqualTest_unary_mysql extends TestCase { public void test_exits() throws Exception { String sql = "-a"; String sql_c = "-(a+1 + +(b+1))"; SQLUnaryExpr exprA, exprB, exprC; { MySqlExprParser parser = new MySqlExprParser(sql); exprA = (SQLUnaryExpr) parser.expr(); } { MySqlExprParser parser = new MySqlExprParser(sql); exprB = (SQLUnaryExpr) parser.expr(); } { MySqlExprParser parser = new MySqlExprParser(sql_c); exprC = (SQLUnaryExpr) parser.expr(); } Assert.assertEquals(exprA, exprB); Assert.assertNotEquals(exprA, exprC); Assert.assertTrue(exprA.equals(exprA)); Assert.assertFalse(exprA.equals(new Object())); Assert.assertEquals(exprA.hashCode(), exprB.hashCode()); Assert.assertEquals(new SQLUnaryExpr(), new SQLUnaryExpr()); Assert.assertEquals(new SQLUnaryExpr().hashCode(), new SQLUnaryExpr().hashCode()); } }