| 1 | // ================================================================= // |
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| 2 | // // |
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| 3 | // File : test_global.h // |
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| 4 | // Purpose : special assertion handling if arb is compiled // |
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| 5 | // with unit-tests // |
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| 6 | // // |
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| 7 | // Coded by Ralf Westram (coder@reallysoft.de) in September 2010 // |
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| 8 | // Institute of Microbiology (Technical University Munich) // |
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| 9 | // http://www.arb-home.de/ // |
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| 10 | // // |
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| 11 | // ================================================================= // |
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| 12 | |
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| 13 | #ifndef TEST_GLOBAL_H |
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| 14 | #define TEST_GLOBAL_H |
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| 15 | |
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| 16 | // do not include here - just test |
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| 17 | // insert includes at ../INCLUDE/arb_assert.h@WhyIncludeHere |
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| 18 | #ifndef _STDARG_H |
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| 19 | #ifndef __STDARG_H |
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| 20 | #error Need cstdarg included |
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| 21 | #endif |
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| 22 | #endif |
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| 23 | #if !defined(_STDIO_H) && !defined(_STDIO_H_) |
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| 24 | #error Need cstdio included |
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| 25 | #endif |
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| 26 | #if !defined(_STDLIB_H) && !defined(_STDLIB_H_) |
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| 27 | #error Need cstdlib included |
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| 28 | #endif |
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| 29 | #if !defined(_ERRNO_H) && !defined(_SYS_ERRNO_H_) |
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| 30 | #error Need cerrno included |
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| 31 | #endif |
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| 32 | #if !defined(_STRING_H) && !defined(_STRING_H_) |
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| 33 | #error Need cstring included |
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| 34 | #endif |
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| 35 | #if !defined(CXXFORWARD_H) |
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| 36 | #error Need cxxforward.h included |
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| 37 | #endif |
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| 38 | |
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| 39 | #ifdef UNIT_TESTS |
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| 40 | |
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| 41 | # if defined(DEVEL_RELEASE) |
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| 42 | # error Unit testing not allowed in release |
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| 43 | # endif |
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| 44 | |
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| 45 | # ifdef __cplusplus |
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| 46 | |
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| 47 | # define SET_ASSERTION_FAILED_FLAG() arb_test::test_data().assertion_failed = true |
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| 48 | # define PRINT_ASSERTION_FAILED_MSG(cond) arb_test::GlobalTestData::assertfailmsg(__FILE__, __LINE__, #cond) |
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| 49 | |
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| 50 | # else |
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| 51 | # define SET_ASSERTION_FAILED_FLAG() // impossible in C (assertions in C code will be handled like normal SEGV) |
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| 52 | # define PRINT_ASSERTION_FAILED_MSG(cond) \ |
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| 53 | do { \ |
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| 54 | fflush(stdout); \ |
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| 55 | fflush(stderr); \ |
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| 56 | fprintf(stderr, "%s:%i: Assertion '%s' failed [C]\n", \ |
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| 57 | __FILE__, __LINE__, #cond); \ |
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| 58 | fflush(stderr); \ |
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| 59 | } while(0) |
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| 60 | # endif |
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| 61 | |
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| 62 | #define SEGV_INSIDE_TEST_STOP_OTHERWISE(backtrace) \ |
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| 63 | do { \ |
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| 64 | if (RUNNING_TEST()) { \ |
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| 65 | ARB_SIGSEGV(backtrace); \ |
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| 66 | } \ |
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| 67 | else { \ |
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| 68 | ARB_STOP(backtrace); \ |
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| 69 | } \ |
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| 70 | } while(0) |
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| 71 | |
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| 72 | # define TRIGGER_ASSERTION(backtrace) \ |
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| 73 | do { \ |
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| 74 | SET_ASSERTION_FAILED_FLAG(); \ |
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| 75 | SEGV_INSIDE_TEST_STOP_OTHERWISE(backtrace); \ |
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| 76 | } while(0) |
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| 77 | |
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| 78 | namespace arb_test { |
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| 79 | class FlushedOutputNoLF { |
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| 80 | inline void flushall() { fflush(stdout); fflush(stderr); } |
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| 81 | public: |
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| 82 | FlushedOutputNoLF() { flushall(); } |
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| 83 | ~FlushedOutputNoLF() { flushall(); } |
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| 84 | }; |
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| 85 | struct FlushedOutput : public FlushedOutputNoLF { |
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| 86 | ~FlushedOutput() { fputc('\n', stderr); } |
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| 87 | }; |
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| 88 | |
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| 89 | enum FlagAction { |
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| 90 | FLAG_RAISE, |
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| 91 | FLAG_IS_RAISED, |
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| 92 | }; |
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| 93 | |
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| 94 | inline const char *fakeenv(const char *var) { |
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| 95 | // override some environment variables for unittests |
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| 96 | if (strcmp(var, "HOME") == 0) return "./homefake"; // normally should be $ARBHOME/UNIT_TESTER/run/homefake |
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| 97 | return NULp; |
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| 98 | } |
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| 99 | |
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| 100 | |
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| 101 | class GlobalTestData { |
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| 102 | typedef bool (*FlagCallback)(FlagAction action, const char *name); |
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| 103 | |
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| 104 | FlagCallback flag_cb; |
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| 105 | |
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| 106 | GlobalTestData() : |
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| 107 | flag_cb(NULp), |
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| 108 | annotation(NULp), |
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| 109 | retry_count(0), |
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| 110 | show_warnings(true), |
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| 111 | assertion_failed(false), |
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| 112 | running_test(false), |
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| 113 | entered_mutex_loop(false), |
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| 114 | warnings(0) |
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| 115 | {} |
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| 116 | ~GlobalTestData() { |
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| 117 | unannotate(); |
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| 118 | } |
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| 119 | GlobalTestData(const GlobalTestData&); // do not synthesize |
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| 120 | GlobalTestData& operator=(const GlobalTestData&); // do not synthesize |
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| 121 | |
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| 122 | static GlobalTestData *instance(bool erase) { |
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| 123 | static GlobalTestData *data = NULp; // singleton |
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| 124 | if (erase) { |
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| 125 | delete data; |
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| 126 | data = NULp; |
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| 127 | } |
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| 128 | else if (!data) { |
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| 129 | static int allocation_count = 0; |
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| 130 | arb_assert(allocation_count == 0); // allocating GlobalTestData twice is a bug! |
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| 131 | allocation_count++; |
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| 132 | |
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| 133 | data = new GlobalTestData; |
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| 134 | } |
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| 135 | return data; |
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| 136 | } |
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| 137 | |
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| 138 | char *annotation; // shown in assertion-failure message |
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| 139 | unsigned retry_count; // >0 -> retry to run test multiple times |
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| 140 | |
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| 141 | void unannotate() { |
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| 142 | free(annotation); |
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| 143 | annotation = NULp; |
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| 144 | } |
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| 145 | |
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| 146 | public: |
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| 147 | bool show_warnings; |
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| 148 | bool assertion_failed; |
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| 149 | bool running_test; |
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| 150 | bool entered_mutex_loop; // helper to avoid race-condition |
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| 151 | |
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| 152 | // counters |
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| 153 | size_t warnings; |
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| 154 | |
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| 155 | void raiseLocalFlag(const char *name) const { |
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| 156 | if (flag_cb) { |
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| 157 | flag_cb(FLAG_RAISE, name); |
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| 158 | } |
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| 159 | else { |
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| 160 | fputs("cannot raise local flag (called from outside test-code?)\n", stderr); |
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| 161 | } |
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| 162 | } |
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| 163 | void init(FlagCallback fc) { flag_cb = fc; } |
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| 164 | |
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| 165 | bool not_covered_by_test() const { return !running_test; } |
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| 166 | |
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| 167 | static GlobalTestData& get_instance() { return *instance(false); } |
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| 168 | static void erase_instance() { instance(true); } |
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| 169 | |
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| 170 | void allow_retry(unsigned count) { |
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| 171 | if (retry_count == 0) { // only allow once (from initial call of test-code) |
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| 172 | retry_count = count; |
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| 173 | } |
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| 174 | } |
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| 175 | unsigned allowed_retries() const { |
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| 176 | return retry_count; |
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| 177 | } |
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| 178 | |
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| 179 | void annotate(const char *annotation_) { |
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| 180 | unannotate(); |
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| 181 | annotation = annotation_ ? strdup(annotation_) : NULp; |
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| 182 | } |
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| 183 | const char *get_annotation() const { return annotation; } |
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| 184 | |
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| 185 | static void print_annotation() { |
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| 186 | char*& annotation = get_instance().annotation; |
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| 187 | if (annotation) fprintf(stderr, " (%s)", annotation); |
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| 188 | } |
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| 189 | |
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| 190 | static void assertfailmsg(const char *filename, int lineno, const char *condition) { |
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| 191 | FlushedOutput yes; |
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| 192 | fprintf(stderr, "\n%s:%i: Assertion '%s' failed", filename, lineno, condition); |
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| 193 | print_annotation(); |
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| 194 | } |
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| 195 | }; |
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| 196 | |
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| 197 | inline GlobalTestData& test_data() { return GlobalTestData::get_instance(); } |
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| 198 | }; |
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| 199 | |
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| 200 | // -------------------------------------------------------------------------------- |
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| 201 | |
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| 202 | #define TEST_ANNOTATE(annotation) arb_test::test_data().annotate(annotation) |
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| 203 | #define TEST_ALLOW_RETRY(count) arb_test::test_data().allow_retry(count) |
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| 204 | #define RUNNING_TEST() arb_test::test_data().running_test |
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| 205 | |
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| 206 | // special assert for unit tests (additionally to SEGV it sets a global flag) |
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| 207 | #define test_assert(cond,backtrace) \ |
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| 208 | do { \ |
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| 209 | if (!(cond)) { \ |
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| 210 | PRINT_ASSERTION_FAILED_MSG(cond); \ |
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| 211 | TRIGGER_ASSERTION(backtrace); \ |
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| 212 | } \ |
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| 213 | } while(0) |
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| 214 | |
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| 215 | // Redefine arb_assert with test_assert when compiling for unit tests. |
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| 216 | // |
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| 217 | // Always request a backtrace because these assertions are unexpected and |
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| 218 | // might require to recompile tests w/o deadlockguard just to determine |
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| 219 | // the callers (using a debugger). |
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| 220 | |
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| 221 | # if defined(ASSERTION_USED) |
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| 222 | # undef arb_assert |
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| 223 | # define arb_assert(cond) test_assert(cond, true) |
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| 224 | # endif |
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| 225 | |
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| 226 | #define UNCOVERED() test_assert(arb_test::test_data().not_covered_by_test(), false) |
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| 227 | // the opposite (i.e. COVERED()) would be quite nice, but is not trivial or even impossible |
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| 228 | |
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| 229 | #else // !UNIT_TESTS |
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| 230 | #error test_global.h may only be included if UNIT_TESTS is defined |
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| 231 | #endif |
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| 232 | |
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| 233 | #else |
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| 234 | #error test_global.h included twice |
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| 235 | #endif // TEST_GLOBAL_H |
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