compat/testPreCompiler.cc

   1 /*
   2  * Copyright (C) 1996-2022 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 #include "squid.h"
  10 #include "testPreCompiler.h"
  11 #include "unitTestMain.h"
  12
  13 #include <cassert>
  14
  15 CPPUNIT_TEST_SUITE_REGISTRATION( testPreCompiler );
  16
  17 /**
  18  * Test several ways of defining pre-compiler directives.
  19  * Squid-3 uses #if FOO syntax for precompiler directives.
  20  * These tests ensure that the inputs will work as expected.
  21  */
  22 void
  23 testPreCompiler::testIfDef()
  24 {
  25     /* Defined to explicit value 1 should be true */
  26 #define ONE_FOO 1
  27 #if ONE_FOO
  28     bool oneTrue = true;
  29 #else
  30     bool oneTrue = false;
  31 #endif
  32 #if !ONE_FOO
  33     bool oneFalse = true;
  34 #else
  35     bool oneFalse = false;
  36 #endif
  37     CPPUNIT_ASSERT(oneTrue);
  38     CPPUNIT_ASSERT(!oneFalse);
  39
  40     /* Defined to explicit value 0 should be false */
  41 #define ZERO_FOO 0
  42 #if ZERO_FOO
  43     bool zeroTrue = true;
  44 #else
  45     bool zeroTrue = false;
  46 #endif
  47 #if !ZERO_FOO
  48     bool zeroFalse = true;
  49 #else
  50     bool zeroFalse = false;
  51 #endif
  52     CPPUNIT_ASSERT(zeroFalse);
  53     CPPUNIT_ASSERT(!zeroTrue);
  54
  55     /* Defined to exist without a value generates pre-compiler errors when used in #if . */
  56
  57     /* Not Defined to exist at all == false */
  58 #undef UNDEFINED_FOO
  59 #if UNDEFINED_FOO
  60     bool undefinedTrue = true;
  61 #else
  62     bool undefinedTrue = false;
  63 #endif
  64 #if !UNDEFINED_FOO
  65     bool undefinedFalse = true;
  66 #else
  67     bool undefinedFalse = false;
  68 #endif
  69     CPPUNIT_ASSERT(undefinedFalse);
  70     CPPUNIT_ASSERT(!undefinedTrue);
  71 }
  72
  73 /**
  74  * Test several ways of defining pre-compiler directives.
  75  * Squid-3 uses #if FOO syntax for precompiler directives.
  76  * These tests ensure that the inputs will work as expected
  77  * when undefined macros are used in && conditions
  78  */
  79 void
  80 testPreCompiler::testIfDefAnd()
  81 {
  82     /* Not Defined to exist at all == false - when used in a compound if */
  83 #undef UNDEFINED_FOO
  84 #define ONE_FOO 1
  85
  86 #if UNDEFINED_FOO && ONE_FOO
  87     bool undefinedAndTrueA = true;
  88 #else
  89     bool undefinedAndTrueA = false;
  90 #endif
  91 #if !UNDEFINED_FOO && ONE_FOO
  92     bool undefinedAndFalseA = true;
  93 #else
  94     bool undefinedAndFalseA = false;
  95 #endif
  96     CPPUNIT_ASSERT(undefinedAndFalseA);
  97     CPPUNIT_ASSERT(!undefinedAndTrueA);
  98
  99 #if ONE_FOO && UNDEFINED_FOO
 100     bool undefinedAndTrueB = true;
 101 #else
 102     bool undefinedAndTrueB = false;
 103 #endif
 104 #if ONE_FOO && !UNDEFINED_FOO
 105     bool undefinedAndFalseB = true;
 106 #else
 107     bool undefinedAndFalseB = false;
 108 #endif
 109     CPPUNIT_ASSERT(undefinedAndFalseB);
 110     CPPUNIT_ASSERT(!undefinedAndTrueB);
 111
 112 #if UNDEFINED_FOO && UNDEFINED_FOO
 113     bool undefinedAndUndefinedC = true;
 114 #else
 115     bool undefinedAndUndefinedC = false;
 116 #endif
 117 #if !UNDEFINED_FOO && !UNDEFINED_FOO
 118     bool notUndefinedAndNotUndefinedC = true;
 119 #else
 120     bool notUndefinedAndNotUndefinedC = false;
 121 #endif
 122     CPPUNIT_ASSERT(!undefinedAndUndefinedC);
 123     CPPUNIT_ASSERT(notUndefinedAndNotUndefinedC);
 124 }
 125
 126 /**
 127  * Test several ways of defining pre-compiler directives.
 128  * Squid-3 uses #if FOO syntax for precompiler directives.
 129  * These tests ensure that the inputs will work as expected
 130  * when undefined macros are used in || conditions
 131  */
 132 void
 133 testPreCompiler::testIfDefOr()
 134 {
 135     /* Not Defined to exist at all == false - when used in a compound if */
 136 #undef UNDEFINED_FOO
 137 #define ZERO_FOO 0
 138
 139 #if UNDEFINED_FOO || ZERO_FOO
 140     bool undefinedOrTrueA = true;
 141 #else
 142     bool undefinedOrTrueA = false;
 143 #endif
 144 #if !UNDEFINED_FOO || ZERO_FOO
 145     bool undefinedOrFalseA = true;
 146 #else
 147     bool undefinedOrFalseA = false;
 148 #endif
 149     CPPUNIT_ASSERT(undefinedOrFalseA);
 150     CPPUNIT_ASSERT(!undefinedOrTrueA);
 151
 152 #if ZERO_FOO || UNDEFINED_FOO
 153     bool undefinedOrTrueB = true;
 154 #else
 155     bool undefinedOrTrueB = false;
 156 #endif
 157 #if ZERO_FOO || !UNDEFINED_FOO
 158     bool undefinedOrFalseB = true;
 159 #else
 160     bool undefinedOrFalseB = false;
 161 #endif
 162     CPPUNIT_ASSERT(undefinedOrFalseB);
 163     CPPUNIT_ASSERT(!undefinedOrTrueB);
 164
 165 #if UNDEFINED_FOO || UNDEFINED_FOO
 166     bool undefinedOrUndefinedC = true;
 167 #else
 168     bool undefinedOrUndefinedC = false;
 169 #endif
 170 #if !UNDEFINED_FOO || !UNDEFINED_FOO
 171     bool notUndefinedOrNotUndefinedC = true;
 172 #else
 173     bool notUndefinedOrNotUndefinedC = false;
 174 #endif
 175     CPPUNIT_ASSERT(notUndefinedOrNotUndefinedC);
 176     CPPUNIT_ASSERT(!undefinedOrUndefinedC);
 177 }
 178