package org.hibernate.test.pretty;

import java.util.StringTokenizer;

import org.hibernate.pretty.Formatter;
import org.hibernate.junit.UnitTestCase;

public class SQLFormatterTest extends UnitTestCase {

	public SQLFormatterTest(String string) {
		super( string );
	}

	public void testNoLoss() {
		assertNoLoss("insert into Address (city, state, zip, \"from\") values (?, ?, ?, 'insert value')");
		assertNoLoss("delete from Address where id = ? and version = ?");
		assertNoLoss("update Address set city = ?, state=?, zip=?, version = ? where id = ? and version = ?");
		assertNoLoss("update Address set city = ?, state=?, zip=?, version = ? where id in (select aid from Person)");
		assertNoLoss("select p.name, a.zipCode, count(*) from Person p left outer join Employee e on e.id = p.id and p.type = 'E' and (e.effective>? or e.effective<?) join Address a on a.pid = p.id where upper(p.name) like 'G%' and p.age > 100 and (p.sex = 'M' or p.sex = 'F') and coalesce( trim(a.street), a.city, (a.zip) ) is not null order by p.name asc, a.zipCode asc");
		assertNoLoss("select ( (m.age - p.age) * 12 ), trim(upper(p.name)) from Person p, Person m where p.mother = m.id and ( p.age = (select max(p0.age) from Person p0 where (p0.mother=m.id)) and p.name like ? )");
		assertNoLoss("select * from Address a join Person p on a.pid = p.id, Person m join Address b on b.pid = m.id where p.mother = m.id and p.name like ?");
		assertNoLoss("select case when p.age > 50 then 'old' when p.age > 18 then 'adult' else 'child' end from Person p where ( case when p.age > 50 then 'old' when p.age > 18 then 'adult' else 'child' end ) like ?");
		assertNoLoss("/* Here we' go! */ select case when p.age > 50 then 'old' when p.age > 18 then 'adult' else 'child' end from Person p where ( case when p.age > 50 then 'old' when p.age > 18 then 'adult' else 'child' end ) like ?");
	}

	private void assertNoLoss(String query) {
		String formattedQuery = new Formatter(query).format();
		StringTokenizer formatted = new StringTokenizer(formattedQuery," \t\n\r\f()");
		StringTokenizer plain = new StringTokenizer(query," \t\n\r\f()");

		System.out.println("Original: " + query);
		System.out.println("Formatted: " + formattedQuery);
		while(formatted.hasMoreTokens() && plain.hasMoreTokens()) {
			String plainToken = plain.nextToken();
			String formattedToken = formatted.nextToken();
			assertEquals("formatter did not return the same token",plainToken, formattedToken);
		}
		assertFalse(formatted.hasMoreTokens());
		assertFalse(plain.hasMoreTokens());
	}
	
		
}