EqualTest_aggreate.java

package com.alibaba.druid.bvt.sql;

import junit.framework.TestCase;

import org.junit.Assert;

import com.alibaba.druid.sql.ast.expr.SQLAggregateExpr;
import com.alibaba.druid.sql.dialect.oracle.parser.OracleExprParser;

public class EqualTest_aggreate extends TestCase {

    public void test_exits() throws Exception {
        String sql = "count(*)";
        String sql_c = "count(id)";
        SQLAggregateExpr exprA, exprB, exprC;
        {
            OracleExprParser parser = new OracleExprParser(sql);
            exprA = (SQLAggregateExpr) parser.expr();
        }
        {
            OracleExprParser parser = new OracleExprParser(sql);
            exprB = (SQLAggregateExpr) parser.expr();
        }
        {
            OracleExprParser parser = new OracleExprParser(sql_c);
            exprC = (SQLAggregateExpr) 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 SQLAggregateExpr(null), new SQLAggregateExpr(null));
        Assert.assertEquals(new SQLAggregateExpr(null).hashCode(), new SQLAggregateExpr(null).hashCode());
    }
}