/**
 * Copyright 2014 Eediom Inc.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.araqne.logdb.query.expr;

import static org.junit.Assert.*;

import java.util.ArrayList;
import java.util.List;

import org.araqne.logdb.QueryParseException;
import org.junit.Test;
/**
 * 
 * @author kyun
 *
 */
public class StrJoinTest {

	@Test
	public void testStrJoin(){
		StrJoin srtJoin = new StrJoin(null, expr(",", array(expr(1,2,3,4))));
		assertEquals("1,2,3,4", srtJoin.eval(null));
	}
	
	@Test
	public void testStrJoinNull(){
		
		StrJoin strJoin = new StrJoin(null, expr(",", null));
		assertEquals(null, strJoin.eval(null));
		
		//strjoin(",", null) => null
	}
	
	@Test
	public void testError90780(){
		//args size 0
		try {
			new StrJoin(null, expr());
			fail();
		} catch (QueryParseException e) {
			if (e.isDebugMode()) {
				System.out.println(e.getMessage());
			}
			assertEquals("99000", e.getType());
		}

		//args size 1
		try {
			new StrJoin(null, expr(","));
			fail();
		} catch (QueryParseException e) {
			if (e.isDebugMode()) {
				System.out.println(e.getMessage());
			}
			assertEquals("99000", e.getType());
		}

		//args size 3
		try {
			new StrJoin(null, expr(null,1,2));
			fail();
		} catch (QueryParseException e) {
			if (e.isDebugMode()) {
				System.out.println(e.getMessage());
			}
			assertEquals("90780", e.getType());
		}
	}

	@Test
	public void testError90781(){
		try {
			new StrJoin(null, expr(null, null));
			fail();
		} catch (QueryParseException e) {
			if (e.isDebugMode()) {
				System.out.println(e.getMessage());
			}
			assertEquals("90781", e.getType());
		}
	}
	
	@Test
	public void testManual() {
		assertNull(FunctionUtil.parseExpr("strjoin(\",\", int(\"invalid\"))").eval(null));
		assertEquals("1,2,3", FunctionUtil.parseExpr("strjoin(\",\", array(1, 2, 3))").eval(null));
	}
	
	private Array array(List<Expression> expr){
		return new Array(null, expr);
	}

	private List<Expression> expr(Object...object ){
		List<Expression> expr = new ArrayList<Expression>();

		for(Object o: object){
			if(o == null)
				expr.add(new NullConstant());
			if(o instanceof Expression)
				expr.add((Expression)o);
			else if(o instanceof String)
				expr.add(new StringConstant((String)o));
			else if(o instanceof Number)
				expr.add(new NumberConstant((Number)o));
			else if(o instanceof Boolean)
				expr.add(new BooleanConstant((Boolean)o));
		}

		return expr;
	}

}
