AviatorNilUnitTest.java

/**
 *  Copyright (C) 2010 dennis zhuang (killme2008@gmail.com)
 *
 *  This library is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published
 *  by the Free Software Foundation; either version 2.1 of the License, or
 *  (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 **/
package com.googlecode.aviator.runtime.type;

import static org.junit.Assert.*;

import java.util.HashMap;
import java.util.Map;

import junit.framework.Assert;

import org.junit.Test;

import com.googlecode.aviator.exception.ExpressionRuntimeException;


public class AviatorNilUnitTest {
    // Any object is greater than nil except nil
    @Test
    public void testCompare() {
        assertEquals(0, AviatorNil.NIL.compare(AviatorNil.NIL, null));

        Map<String, Object> env = new HashMap<String, Object>();
        env.put("a", null);
        env.put("i", 1);
        env.put("f", 3.14f);
        env.put("d", -100.0);
        env.put("ch", 'a');
        env.put("s", "hello");
        assertEquals(0, AviatorNil.NIL.compare(AviatorNil.NIL, null));
        assertEquals(0, AviatorNil.NIL.compare(new AviatorJavaType("a"), env));
        assertEquals(0, new AviatorJavaType("a").compare(AviatorNil.NIL, env));

        assertEquals(1, AviatorNumber.valueOf(1).compare(AviatorNil.NIL, env));
        assertEquals(-1, AviatorNil.NIL.compare(AviatorNumber.valueOf(1), env));
        assertEquals(1, AviatorNumber.valueOf(-1000).compare(AviatorNil.NIL, env));
        assertEquals(-1, AviatorNil.NIL.compare(AviatorNumber.valueOf(-1000), env));
        assertEquals(1, AviatorBoolean.TRUE.compare(AviatorNil.NIL, env));
        assertEquals(-1, AviatorNil.NIL.compare(AviatorBoolean.TRUE, env));
        assertEquals(1, AviatorBoolean.FALSE.compare(AviatorNil.NIL, env));
        assertEquals(-1, AviatorNil.NIL.compare(AviatorBoolean.FALSE, env));
        assertEquals(1, new AviatorString("").compare(AviatorNil.NIL, env));
        assertEquals(-1, AviatorNil.NIL.compare(new AviatorString(""), env));
        assertEquals(1, new AviatorString(" ").compare(AviatorNil.NIL, env));
        assertEquals(-1, AviatorNil.NIL.compare(new AviatorString(" "), env));
        assertEquals(1, new AviatorString("hello").compare(AviatorNil.NIL, env));
        assertEquals(-1, AviatorNil.NIL.compare(new AviatorString("hello"), env));
        assertEquals(1, new AviatorString("-100").compare(AviatorNil.NIL, env));
        assertEquals(-1, AviatorNil.NIL.compare(new AviatorString("-100"), env));
        assertEquals(1, new AviatorPattern("\\d+").compare(AviatorNil.NIL, env));
        assertEquals(-1, AviatorNil.NIL.compare(new AviatorPattern("\\d+"), env));
        assertEquals(1, new AviatorPattern("[\\w_]+\\.[\\w_]").compare(AviatorNil.NIL, env));
        assertEquals(-1, AviatorNil.NIL.compare(new AviatorPattern("[\\w_]+\\.[\\w_]"), env));

        assertEquals(1, new AviatorJavaType("i").compare(AviatorNil.NIL, env));
        assertEquals(-1, AviatorNil.NIL.compare(new AviatorJavaType("i"), env));

        assertEquals(1, new AviatorJavaType("f").compare(AviatorNil.NIL, env));
        assertEquals(-1, AviatorNil.NIL.compare(new AviatorJavaType("f"), env));

        assertEquals(1, new AviatorJavaType("d").compare(AviatorNil.NIL, env));
        assertEquals(-1, AviatorNil.NIL.compare(new AviatorJavaType("d"), env));

        assertEquals(1, new AviatorJavaType("ch").compare(AviatorNil.NIL, env));
        assertEquals(-1, AviatorNil.NIL.compare(new AviatorJavaType("ch"), env));

        assertEquals(1, new AviatorJavaType("s").compare(AviatorNil.NIL, env));
        assertEquals(-1, AviatorNil.NIL.compare(new AviatorJavaType("s"), env));
    }


    @Test
    public void testAddString() {
        assertEquals("null", AviatorNil.NIL.add(new AviatorString(""), null).getValue(null));
        assertEquals("null hello", AviatorNil.NIL.add(new AviatorString(" hello"), null).getValue(null));

        try {
            AviatorNil.NIL.add(new AviatorJavaType("a"), null);
            Assert.fail();
        }
        catch (ExpressionRuntimeException e) {

        }
        Map<String, Object> env = new HashMap<String, Object>();
        env.put("a", " hello");
        assertEquals("null hello", AviatorNil.NIL.add(new AviatorJavaType("a"), env).getValue(env));
    }
}