001    // Copyright 2004, 2005 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry.coerce;
016    
017    import java.util.ArrayList;
018    import java.util.HashMap;
019    import java.util.Iterator;
020    import java.util.List;
021    import java.util.Map;
022    
023    import org.apache.tapestry.BaseComponentTestCase;
024    import org.testng.annotations.Test;
025    
026    /**
027     * Tests several implementations of {@link org.apache.tapestry.coerce.TypeConverter}that return
028     * Boolean values.
029     * 
030     * @author Howard M. Lewis Ship
031     * @since 4.0
032     */
033    @Test
034    public class TestBooleanConverters extends BaseComponentTestCase
035    {
036        public void testStringToBoolean()
037        {
038            StringToBooleanConverter c = new StringToBooleanConverter();
039    
040            assertSame(Boolean.TRUE, c.convertValue("fred"));
041    
042            // The special case
043            assertSame(Boolean.FALSE, c.convertValue("false"));
044    
045            assertSame(Boolean.FALSE, c.convertValue(" "));
046            assertSame(Boolean.FALSE, c.convertValue(""));
047    
048            // Actually, null will never be passed in, but ..
049    
050            assertSame(Boolean.FALSE, c.convertValue(null));
051        }
052    
053        public void testMapToBoolean()
054        {
055            Map m = new HashMap();
056    
057            TypeConverter c = new MapToBooleanConverter();
058    
059            assertSame(Boolean.FALSE, c.convertValue(m));
060    
061            m.put("foo", "bar");
062    
063            assertSame(Boolean.TRUE, c.convertValue(m));
064        }
065    
066        public void testNullToBoolean()
067        {
068            assertSame(Boolean.FALSE, new NullToBooleanConverter().convertValue("doesn't matter"));
069        }
070    
071        public void testCollectionToBoolean()
072        {
073            List l = new ArrayList();
074            TypeConverter c = new CollectionToBooleanConverter();
075    
076            assertSame(Boolean.FALSE, c.convertValue(l));
077    
078            l.add("foo");
079    
080            assertSame(Boolean.TRUE, c.convertValue(l));
081        }
082    
083        public void testNumberToBoolean()
084        {
085            TypeConverter c = new NumberToBooleanConverter();
086    
087            assertSame(Boolean.FALSE, c.convertValue(new Integer(0)));
088            assertSame(Boolean.TRUE, c.convertValue(new Integer(7)));
089        }
090    
091        public void testObjectToBoolean()
092        {
093            TypeConverter c = new ObjectToBooleanConverter();
094    
095            assertSame(Boolean.TRUE, c.convertValue("foo"));
096        }
097    
098        public void testBooleanArrayToIterator()
099        {
100            TypeConverter c = new BooleanArrayToIteratorConverter();
101    
102            boolean[] input =
103            { false, true, true, false };
104    
105            Iterator i = (Iterator) c.convertValue(input);
106    
107            for (int j = 0; j < input.length; j++)
108            {
109                Boolean expected = input[j] ? Boolean.TRUE : Boolean.FALSE;
110    
111                assertSame(expected, i.next());
112            }
113    
114            assertEquals(false, i.hasNext());
115    
116        }
117    
118    }