/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
*/
package org.hibernate.test.ast;
import antlr.ASTFactory;
import antlr.collections.AST;
import org.junit.Test;
import org.hibernate.hql.internal.ast.util.ASTUtil;
import org.hibernate.testing.junit4.BaseUnitTestCase;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;
/**
* Unit test for ASTUtil.
*/
public class ASTUtilTest extends BaseUnitTestCase {
private ASTFactory factory = new ASTFactory();
@Test
public void testCreate() throws Exception {
AST n = ASTUtil.create( factory, 1, "one");
assertNull( n.getFirstChild() );
assertEquals( "one", n.getText() );
assertEquals( 1, n.getType() );
}
@Test
public void testCreateTree() throws Exception {
AST[] tree = new AST[4];
AST grandparent = tree[0] = ASTUtil.create(factory, 1, "grandparent");
AST parent = tree[1] = ASTUtil.create(factory,2,"parent");
AST child = tree[2] = ASTUtil.create(factory,3,"child");
AST baby = tree[3] = ASTUtil.create(factory,4,"baby");
AST t = ASTUtil.createTree( factory, tree);
assertSame(t,grandparent);
assertSame(parent,t.getFirstChild());
assertSame(child,t.getFirstChild().getFirstChild());
assertSame( baby, t.getFirstChild().getFirstChild().getFirstChild() );
}
@Test
public void testFindPreviousSibling() throws Exception {
AST child1 = ASTUtil.create(factory,2, "child1");
AST child2 = ASTUtil.create(factory,3, "child2");
AST n = factory.make( new AST[] {
ASTUtil.create(factory, 1, "parent"),
child1,
child2,
});
assertSame(child1,ASTUtil.findPreviousSibling( n,child2));
Exception e = null;
try {
ASTUtil.findPreviousSibling(child1,null);
}
catch (Exception x) {
e = x;
}
assertNotNull(e);
}
}