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source: vbox/trunk/src/libs/xpcom18a4/nsprpub/pr/tests/randseed.c@ 32258

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1/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2/* ***** BEGIN LICENSE BLOCK *****
3 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 *
5 * The contents of this file are subject to the Mozilla Public License Version
6 * 1.1 (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 * http://www.mozilla.org/MPL/
9 *
10 * Software distributed under the License is distributed on an "AS IS" basis,
11 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 * for the specific language governing rights and limitations under the
13 * License.
14 *
15 * The Original Code is the Netscape Portable Runtime (NSPR).
16 *
17 * The Initial Developer of the Original Code is
18 * Netscape Communications Corporation.
19 * Portions created by the Initial Developer are Copyright (C) 1998-2000
20 * the Initial Developer. All Rights Reserved.
21 *
22 * Contributor(s):
23 *
24 * Alternatively, the contents of this file may be used under the terms of
25 * either the GNU General Public License Version 2 or later (the "GPL"), or
26 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
27 * in which case the provisions of the GPL or the LGPL are applicable instead
28 * of those above. If you wish to allow use of your version of this file only
29 * under the terms of either the GPL or the LGPL, and not to allow others to
30 * use your version of this file under the terms of the MPL, indicate your
31 * decision by deleting the provisions above and replace them with the notice
32 * and other provisions required by the GPL or the LGPL. If you do not delete
33 * the provisions above, a recipient may use your version of this file under
34 * the terms of any one of the MPL, the GPL or the LGPL.
35 *
36 * ***** END LICENSE BLOCK ***** */
37
38/*
39** File: rngseed.c
40** Description:
41** Test NSPR's Random Number Seed generator
42**
43** Initial test: Just make sure it outputs some data.
44**
45** ... more? ... check some iterations to ensure it is random (no dupes)
46** ... more? ... histogram distribution of random numbers
47*/
48
49#include <plgetopt.h>
50#include <nspr.h>
51#include <prrng.h>
52#include <stdio.h>
53#include <stdlib.h>
54
55/*
56** Test harness infrastructure
57*/
58PRLogModuleInfo *lm;
59PRLogModuleLevel msgLevel = PR_LOG_NONE;
60PRIntn debug = 0;
61PRUint32 failed_already = 0;
62/* end Test harness infrastructure */
63
64PRIntn optRandCount = 30;
65char buf[40];
66PRSize bufSize = sizeof(buf);
67PRSize rSize;
68PRIntn i;
69
70/*
71** Emit help text for this test
72*/
73static void Help( void )
74{
75 printf("Template: Help(): display your help message(s) here");
76 exit(1);
77} /* end Help() */
78
79static void PrintRand( void *buf, PRIntn size )
80{
81 PRUint32 *rp = buf;
82 PRIntn i;
83
84 printf("%4.4d--\n", size );
85 while (size > 0 ) {
86 switch( size ) {
87 case 1 :
88 printf("%2.2X\n", *(rp++) );
89 size -= 4;
90 break;
91 case 2 :
92 printf("%4.4X\n", *(rp++) );
93 size -= 4;
94 break;
95 case 3 :
96 printf("%6.6X\n", *(rp++) );
97 size -= 4;
98 break;
99 default:
100 while ( size >= 4) {
101 PRIntn i = 3;
102 do {
103 printf("%8.8X ", *(rp++) );
104 size -= 4;
105 } while( i-- );
106 i = 3;
107 printf("\n");
108 }
109 break;
110 } /* end switch() */
111 } /* end while() */
112} /* end PrintRand() */
113
114
115PRIntn main(PRIntn argc, char *argv[])
116{
117 {
118 /*
119 ** Get command line options
120 */
121 PLOptStatus os;
122 PLOptState *opt = PL_CreateOptState(argc, argv, "hdv");
123
124 while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
125 {
126 if (PL_OPT_BAD == os) continue;
127 switch (opt->option)
128 {
129 case 'd': /* debug */
130 debug = 1;
131 msgLevel = PR_LOG_ERROR;
132 break;
133 case 'v': /* verbose mode */
134 msgLevel = PR_LOG_DEBUG;
135 break;
136 case 'h': /* help message */
137 Help();
138 break;
139 default:
140 break;
141 }
142 }
143 PL_DestroyOptState(opt);
144 }
145
146 lm = PR_NewLogModule("Test"); /* Initialize logging */
147 for ( i = 0; i < optRandCount ; i++ ) {
148 memset( buf, 0, bufSize );
149 rSize = PR_GetRandomNoise( buf, bufSize );
150 if (!rSize) {
151 fprintf(stderr, "Not implemented\n" );
152 failed_already = PR_TRUE;
153 break;
154 }
155 if (debug) PrintRand( buf, rSize );
156 }
157
158 if (debug) printf("%s\n", (failed_already)? "FAIL" : "PASS");
159 return( (failed_already == PR_TRUE )? 1 : 0 );
160} /* main() */
161/* end template.c */
162
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