1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 */
18
19 package org.apache.commons.net.imap;
20
21 import org.junit.Assert;
22
23 import org.junit.Test;
24
25
26 public class IMAPTest {
27
28 @Test
29 public void checkGenerator() {
30 // This test assumes:
31 // - 26 letters in the generator alphabet
32 // - the generator uses a fixed size tag
33 IMAP imap = new IMAP();
34 String initial = imap.generateCommandID();
35 int expected = 1;
36 for(int j=0; j < initial.length(); j++) {
37 expected *= 26; // letters in alphabet
38 }
39 int i=0;
40 boolean matched=false;
41 while(i <= expected+10) { // don't loop forever, but allow it to pass go!
42 i++;
43 String s = imap.generateCommandID();
44 matched = initial.equals(s);
45 if (matched) { // we've wrapped around completely
46 break;
47 }
48 }
49 Assert.assertEquals(expected, i);
50 Assert.assertTrue("Expected to see the original value again", matched);
51 }
52 }