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* to you under the Apache License, Version 2.0 (the
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*
* http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.cayenne.exp.parser;
import org.apache.cayenne.exp.Expression;
import org.apache.cayenne.exp.ExpressionFactory;
import org.apache.cayenne.testdo.testmap.Artist;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
/**
* @since 4.0
*/
public class ASTSubstringTest {
@Test
public void testEvaluateSubstring() throws Exception {
ASTObjPath path = new ASTObjPath("artistName");
ASTScalar offset = new ASTScalar((Integer)2);
ASTScalar length = new ASTScalar((Integer)8);
ASTSubstring exp = new ASTSubstring(path, offset, length);
Artist a = new Artist();
a.setArtistName("1234567890xyz");
Object res = exp.evaluateNode(a);
assertTrue(res instanceof String);
assertEquals("23456789", res);
}
@Test
public void parseTest() throws Exception {
String expString = "substring(xyz , 2 , 3)";
Expression exp = ExpressionFactory.exp(expString);
assertTrue(exp instanceof ASTSubstring);
String toString = exp.toString();
assertEquals(expString, toString);
}
}