1 /*
2 * Copyright 2003-2004 The Apache Software Foundation
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.apache.commons.convert1.string;
17
18 import junit.framework.TestCase;
19
20 import org.apache.commons.convert1.ConversionException;
21 import org.apache.commons.convert1.Converter;
22
23
24 /**
25 * Abstract base for <Number>Converter classes.
26 *
27 * @author Rodney Waldhoff
28 * @version $Id: NumberConverterTestBase.java 155441 2005-02-26 13:19:22Z dirkv $
29 */
30
31 public abstract class NumberConverterTestBase extends TestCase {
32
33 // ------------------------------------------------------------------------
34
35 public NumberConverterTestBase(String name) {
36 super(name);
37 }
38
39 // ------------------------------------------------------------------------
40
41 protected abstract Converter makeConverter();
42 protected abstract Class getExpectedType();
43
44 // ------------------------------------------------------------------------
45
46 /**
47 * Assumes ConversionException in response to covert(getExpectedType(),null).
48 */
49 public void testConvertNull() throws Exception {
50 try {
51 makeConverter().convert(getExpectedType(),null);
52 fail("Expected ConversionException");
53 } catch(ConversionException e) {
54 // expected
55 }
56 }
57
58 /**
59 * Assumes convert(getExpectedType(),Number) returns some non-null
60 * instance of getExpectedType().
61 */
62 public void testConvertNumber() throws Exception {
63 String[] message= {
64 "from Byte",
65 "from Short",
66 "from Integer",
67 "from Long",
68 "from Float",
69 "from Double"
70 };
71
72 Object[] number = {
73 new Byte((byte)7),
74 new Short((short)8),
75 new Integer(9),
76 new Long(10),
77 new Float(11.1),
78 new Double(12.2)
79 };
80
81 for(int i=0;i<number.length;i++) {
82 Object val = makeConverter().convert(getExpectedType(),number[i]);
83 assertNotNull("Convert " + message[i] + " should not be null",val);
84 assertTrue(
85 "Convert " + message[i] + " should return a " + getExpectedType().getName(),
86 getExpectedType().isInstance(val));
87 }
88 }
89 }
90