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broken.cpp
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broken.cpp
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// [Broken]
// Lightweight Unit Testing for C++.
//
// [License]
// Public Domain (Unlicense)
// [Dependencies]
#include "./broken.h"
// ============================================================================
// [Broken - Global]
// ============================================================================
// Zero initialized globals.
struct BrokenGlobal {
// --------------------------------------------------------------------------
// [Accessors]
// --------------------------------------------------------------------------
bool hasArg(const char* a) const {
int argc = _argc;
const char** argv = _argv;
for (int i = 1; i < argc; i++) {
if (::strcmp(argv[i], a) == 0)
return true;
}
return false;
}
FILE* getFile() const {
return _file ? _file : stdout;
}
// --------------------------------------------------------------------------
// [Members]
// --------------------------------------------------------------------------
// Application arguments.
int _argc;
const char** _argv;
// Output file.
FILE* _file;
// Current context.
const char* _currentFile;
int _currentLine;
// Unit tests.
BrokenAPI::Unit* _unitList;
BrokenAPI::Unit* _unitRunning;
};
static BrokenGlobal _brokenGlobal;
// ============================================================================
// [Broken - API]
// ============================================================================
// Get whether the string `a` starts with string `b`.
static bool BrokenAPI_startsWith(const char* a, const char* b) {
for (size_t i = 0; ; i++) {
if (b[i] == '\0') return true;
if (a[i] != b[i]) return false;
}
}
// Get whether the strings `a` and `b` are equal, ignoring case and treating
// `-` as `_`.
static bool BrokenAPI_matchesFilter(const char* a, const char* b) {
for (size_t i = 0; ; i++) {
unsigned char ca = static_cast<unsigned char>(a[i]);
unsigned char cb = static_cast<unsigned char>(b[i]);
// If filter is defined as wildcard the rest automatically matches.
if (cb == '*')
return true;
if (ca == '-') ca = '_';
if (cb == '-') cb = '_';
if (ca >= 'A' && ca <= 'Z') ca += 'a' - 'A';
if (cb >= 'A' && cb <= 'Z') cb += 'a' - 'A';
if (ca != cb)
return false;
if (ca == '\0')
return true;
}
}
static bool BrokenAPI_canRun(BrokenAPI::Unit* unit) {
BrokenGlobal& global = _brokenGlobal;
int i, argc = global._argc;
const char** argv = global._argv;
const char* unitName = unit->name;
bool hasFilter = false;
for (i = 1; i < argc; i++) {
const char* arg = argv[i];
if (BrokenAPI_startsWith(arg, "--run-") && ::strcmp(arg, "--run-all") != 0) {
hasFilter = true;
if (BrokenAPI_matchesFilter(unitName, arg + 6))
return true;
}
}
// If no filter has been specified the default is to run.
return !hasFilter;
}
static void BrokenAPI_runUnit(BrokenAPI::Unit* unit) {
BrokenAPI::info("Running %s", unit->name);
_brokenGlobal._unitRunning = unit;
unit->entry();
_brokenGlobal._unitRunning = NULL;
}
static void BrokenAPI_runAll() {
BrokenAPI::Unit* unit = _brokenGlobal._unitList;
bool hasUnits = unit != NULL;
size_t count = 0;
while (unit != NULL) {
if (BrokenAPI_canRun(unit)) {
BrokenAPI_runUnit(unit);
count++;
}
unit = unit->next;
}
if (count) {
INFO("\nSuccess:");
INFO(" All tests passed!");
}
else {
INFO("\nWarning:");
INFO(" No units %s!", hasUnits ? "matched the filter" : "defined");
}
}
static void BrokenAPI_listAll() {
BrokenAPI::Unit* unit = _brokenGlobal._unitList;
if (unit != NULL) {
INFO("Units:");
do {
INFO(" %s", unit->name);
unit = unit->next;
} while (unit != NULL);
}
else {
INFO("Warning:");
INFO(" No units defined!");
}
}
void BrokenAPI::add(Unit* unit) {
Unit** pPrev = &_brokenGlobal._unitList;
Unit* current = *pPrev;
// C++ static initialization doesn't guarantee anything. We sort all units by
// name so the execution will always happen in deterministic order.
while (current != NULL) {
if (::strcmp(current->name, unit->name) >= 0)
break;
pPrev = ¤t->next;
current = *pPrev;
}
*pPrev = unit;
unit->next = current;
}
void BrokenAPI::setOutputFile(FILE* file) {
BrokenGlobal& global = _brokenGlobal;
global._file = file;
}
int BrokenAPI::setContext(const char* file, int line) {
BrokenGlobal& global = _brokenGlobal;
global._currentFile = file;
global._currentLine = line;
return 1;
}
int BrokenAPI::run(int argc, const char* argv[],
Entry onBeforeRun,
Entry onAfterRun) {
BrokenGlobal& global = _brokenGlobal;
global._argc = argc;
global._argv = argv;
if (global.hasArg("--help")) {
INFO("Options:");
INFO(" --help - print this usage");
INFO(" --list - list all tests");
INFO(" --run-... - run a test(s), trailing wildcards supported");
INFO(" --run-all - run all tests");
return 0;
}
if (global.hasArg("--list")) {
BrokenAPI_listAll();
return 0;
}
if (onBeforeRun)
onBeforeRun();
// We don't care about filters here, it's implemented by `runAll`.
BrokenAPI_runAll();
if (onAfterRun)
onAfterRun();
return 0;
}
int BrokenAPI::info(const char* fmt, ...) {
BrokenGlobal& global = _brokenGlobal;
FILE* dst = global.getFile();
const char* prefix = global._unitRunning ? " " : "";
size_t len = ::strlen(fmt);
if (len != 0) {
va_list ap;
va_start(ap, fmt);
::fputs(prefix, dst);
::vfprintf(dst, fmt, ap);
va_end(ap);
}
if (len == 0 || fmt[len - 1] != '\n')
::fputs("\n", dst);
::fflush(dst);
return 1;
}
int BrokenAPI::fail(const char* fmt, va_list ap) {
BrokenGlobal& global = _brokenGlobal;
FILE* dst = global.getFile();
::fputs(" Failed!", dst);
if (fmt == NULL)
fmt = "";
size_t len = ::strlen(fmt);
if (len != 0) {
::fputs(" ", dst);
::vfprintf(dst, fmt, ap);
}
if (len > 0 && fmt[len - 1] != '\n')
::fputs("\n", dst);
::fprintf(dst, " File: %s (Line: %d)\n", global._currentFile, global._currentLine);
::fflush(dst);
::exit(1);
return 1;
}