src/icmp/testIcmp.cc

   1 /*
   2  * Copyright (C) 1996-2014 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 #define SQUID_HELPER 1
  10
  11 #include "squid.h"
  12
  13 #include <cppunit/TestAssert.h>
  14
  15 #include "testIcmp.h"
  16
  17 CPPUNIT_TEST_SUITE_REGISTRATION( testIcmp );
  18
  19 #if USE_ICMP
  20
  21 void
  22 testIcmp::testChecksum()
  23 {
  24     stubIcmp icmp;
  25     uint16_t buf[10], tmpval;
  26     for (tmpval=0; tmpval < 10; ++tmpval)
  27         buf[tmpval]=htons(1+tmpval);
  28
  29     // NULL data
  30     CPPUNIT_ASSERT_EQUAL((int)htons(0xffff), icmp.testChecksum(NULL,0));
  31
  32     // NULL data with length!!
  33     CPPUNIT_ASSERT_EQUAL((int)htons(0xffff), icmp.testChecksum(NULL,1));
  34
  35     // data with 0 length
  36     CPPUNIT_ASSERT_EQUAL((int)htons(0xffff), icmp.testChecksum(buf,0));
  37
  38     // data with invalid length (low)
  39     CPPUNIT_ASSERT_EQUAL((int)htons(0xffff), icmp.testChecksum(buf,1));
  40
  41     CPPUNIT_ASSERT_EQUAL((int)htons(0xfffe), icmp.testChecksum(buf,2)); // 1
  42     CPPUNIT_ASSERT_EQUAL((int)htons(0xfffe), icmp.testChecksum(buf,3));
  43
  44     CPPUNIT_ASSERT_EQUAL((int)htons(0xfffc), icmp.testChecksum(buf,4)); // 1+2
  45     CPPUNIT_ASSERT_EQUAL((int)htons(0xfffc), icmp.testChecksum(buf,5));
  46
  47     CPPUNIT_ASSERT_EQUAL((int)htons(0xfff9), icmp.testChecksum(buf,6)); // 1+2+3
  48     CPPUNIT_ASSERT_EQUAL((int)htons(0xfff9), icmp.testChecksum(buf,7));
  49
  50     CPPUNIT_ASSERT_EQUAL((int)htons(0xfff5), icmp.testChecksum(buf,8)); // 1+2+3+4
  51     CPPUNIT_ASSERT_EQUAL((int)htons(0xfff5), icmp.testChecksum(buf,9));
  52
  53     CPPUNIT_ASSERT_EQUAL((int)htons(0xfff0), icmp.testChecksum(buf,10)); // 1+2...+5
  54     CPPUNIT_ASSERT_EQUAL((int)htons(0xfff0), icmp.testChecksum(buf,11));
  55
  56     CPPUNIT_ASSERT_EQUAL((int)htons(0xffea), icmp.testChecksum(buf,12)); // 1+2...+6
  57     CPPUNIT_ASSERT_EQUAL((int)htons(0xffea), icmp.testChecksum(buf,13));
  58
  59     CPPUNIT_ASSERT_EQUAL((int)htons(0xffe3), icmp.testChecksum(buf,14)); // 1+2...+7
  60     CPPUNIT_ASSERT_EQUAL((int)htons(0xffe3), icmp.testChecksum(buf,15));
  61
  62     CPPUNIT_ASSERT_EQUAL((int)htons(0xffdb), icmp.testChecksum(buf,16)); // 1+2...+8
  63     CPPUNIT_ASSERT_EQUAL((int)htons(0xffdb), icmp.testChecksum(buf,17));
  64
  65     CPPUNIT_ASSERT_EQUAL((int)htons(0xffd2), icmp.testChecksum(buf,18)); // 1+2...+9
  66     CPPUNIT_ASSERT_EQUAL((int)htons(0xffd2), icmp.testChecksum(buf,19));
  67
  68     // data with accurate length
  69     CPPUNIT_ASSERT_EQUAL((int)htons(0xffc8), icmp.testChecksum(buf,20)); // 1+2...+10
  70
  71     // data with invalid length (overrun) ==> Garbage checksum...
  72 }
  73
  74 void
  75 testIcmp::testHops()
  76 {
  77     stubIcmp icmp;
  78
  79     /* test invalid -(under values) */
  80     // negative     : n > 33
  81     CPPUNIT_ASSERT_EQUAL(34, icmp.testHops(-1));
  82     // zero
  83     CPPUNIT_ASSERT_EQUAL(33, icmp.testHops(0));
  84
  85     /* test each valid case boundary */
  86     // n(1...32)    : 32 >= n >= 1
  87     CPPUNIT_ASSERT_EQUAL(32, icmp.testHops(1));
  88     CPPUNIT_ASSERT_EQUAL(1, icmp.testHops(32));
  89
  90     // n(33...62)   : 30 >= n >= 1
  91     CPPUNIT_ASSERT_EQUAL(30, icmp.testHops(33));
  92     CPPUNIT_ASSERT_EQUAL(1, icmp.testHops(62));
  93
  94     // n(63...64)  : 2 >= n >= 1
  95     CPPUNIT_ASSERT_EQUAL(2, icmp.testHops(63));
  96     CPPUNIT_ASSERT_EQUAL(1, icmp.testHops(64));
  97
  98     // n(65...128)  : 64 >= n >= 1
  99     CPPUNIT_ASSERT_EQUAL(64, icmp.testHops(65));
 100     CPPUNIT_ASSERT_EQUAL(1, icmp.testHops(128));
 101
 102     // n(129...192) : 64 >= n >= 1
 103     CPPUNIT_ASSERT_EQUAL(64, icmp.testHops(129));
 104     CPPUNIT_ASSERT_EQUAL(1, icmp.testHops(192));
 105
 106     // n(193...)    : n < 63
 107     CPPUNIT_ASSERT_EQUAL(63, icmp.testHops(193));
 108     CPPUNIT_ASSERT_EQUAL(1, icmp.testHops(255));
 109
 110     /* test invalid (over values) */
 111     // 256 - produces zero
 112     CPPUNIT_ASSERT_EQUAL(0, icmp.testHops(256));
 113     // 257 - produces negative hops
 114     CPPUNIT_ASSERT_EQUAL(-1, icmp.testHops(257));
 115 }
 116
 117 #endif /* USE_ICMP */
 118