Add minunit.h with some trivial tests

1 files changed, 252 insertions, 0 deletions

diff --git a/test/minunit.c b/test/minunit.c
new file mode 100644
index 0000000..e158c42
--- /dev/null
+++ b/test/minunit.c
@@ -0,0 +1,252 @@
+/*
+ * Copyright (c) 2012 David Siñuela Pastor, siu.4coders@gmail.com
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef MINUNIT_MINUNIT_C
+#define MINUNIT_MINUNIT_C
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if defined(_WIN32)
+#include <Windows.h>
+#if defined(_MSC_VER) && _MSC_VER < 1900
+#define snprintf _snprintf
+#define __func__ __FUNCTION__
+#endif
+
+#elif defined(__unix__) || defined(__unix) || defined(unix) || (defined(__APPLE__) && defined(__MACH__))
+
+/* Change POSIX C SOURCE version for pure c99 compilers */
+#if !defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE < 200112L
+#undef _POSIX_C_SOURCE
+#define _POSIX_C_SOURCE 200112L
+#endif
+
+#include <string.h>
+#include <sys/resource.h>
+#include <sys/time.h> /* gethrtime(), gettimeofday() */
+#include <sys/times.h>
+#include <time.h> /* clock_gettime(), time() */
+#include <unistd.h> /* POSIX flags */
+
+#if defined(__MACH__) && defined(__APPLE__)
+#include <mach/mach.h>
+#include <mach/mach_time.h>
+#endif
+
+#if __GNUC__ >= 5 && !defined(__STDC_VERSION__)
+#define __func__ __extension__ __FUNCTION__
+#endif
+
+#else
+#error "Unable to define timers for an unknown OS."
+#endif
+
+#include <math.h>
+#include <stdio.h>
+
+/*  Maximum length of last message */
+#define MINUNIT_MESSAGE_LEN 1024
+/*  Accuracy with which floats are compared */
+#define MINUNIT_EPSILON 1E-12
+
+/*  Misc. counters */
+int minunit_run = 0;
+int minunit_suites = 0;
+int minunit_fail = 0;
+int minunit_status = 0;
+
+/*  Timers */
+double minunit_real_timer = 0;
+double minunit_proc_timer = 0;
+
+/*  Last message */
+char minunit_last_message[MINUNIT_MESSAGE_LEN];
+
+/*  Test setup and teardown function pointers */
+void (*minunit_setup)(void) = NULL;
+void (*minunit_teardown)(void) = NULL;
+
+/*
+ * The following two functions were written by David Robert Nadeau
+ * from http://NadeauSoftware.com/ and distributed under the
+ * Creative Commons Attribution 3.0 Unported License
+ */
+
+/**
+ * Returns the real time, in seconds, or -1.0 if an error occurred.
+ *
+ * Time is measured since an arbitrary and OS-dependent start time.
+ * The returned real time is only useful for computing an elapsed time
+ * between two calls to this function.
+ */
+double mu_timer_real(void)
+{
+#if defined(_WIN32)
+    /* Windows 2000 and later. ---------------------------------- */
+    LARGE_INTEGER Time;
+    LARGE_INTEGER Frequency;
+
+    QueryPerformanceFrequency(&Frequency);
+    QueryPerformanceCounter(&Time);
+
+    Time.QuadPart *= 1000000;
+    Time.QuadPart /= Frequency.QuadPart;
+
+    return (double) Time.QuadPart / 1000000.0;
+
+#elif (defined(__hpux) || defined(hpux)) || \
+    ((defined(__sun__) || defined(__sun) || defined(sun)) && (defined(__SVR4) || defined(__svr4__)))
+    /* HP-UX, Solaris. ------------------------------------------ */
+    return (double) gethrtime() / 1000000000.0;
+
+#elif defined(__MACH__) && defined(__APPLE__)
+    /* OSX. ----------------------------------------------------- */
+    static double timeConvert = 0.0;
+    if (timeConvert == 0.0) {
+        mach_timebase_info_data_t timeBase;
+        (void) mach_timebase_info(&timeBase);
+        timeConvert = (double) timeBase.numer / (double) timeBase.denom / 1000000000.0;
+    }
+    return (double) mach_absolute_time() * timeConvert;
+
+#elif defined(_POSIX_VERSION)
+    /* POSIX. --------------------------------------------------- */
+    struct timeval tm;
+#if defined(_POSIX_TIMERS) && (_POSIX_TIMERS > 0)
+    {
+        struct timespec ts;
+#if defined(CLOCK_MONOTONIC_PRECISE)
+        /* BSD. --------------------------------------------- */
+        const clockid_t id = CLOCK_MONOTONIC_PRECISE;
+#elif defined(CLOCK_MONOTONIC_RAW)
+        /* Linux. ------------------------------------------- */
+        const clockid_t id = CLOCK_MONOTONIC_RAW;
+#elif defined(CLOCK_HIGHRES)
+        /* Solaris. ----------------------------------------- */
+        const clockid_t id = CLOCK_HIGHRES;
+#elif defined(CLOCK_MONOTONIC)
+        /* AIX, BSD, Linux, POSIX, Solaris. ----------------- */
+        const clockid_t id = CLOCK_MONOTONIC;
+#elif defined(CLOCK_REALTIME)
+        /* AIX, BSD, HP-UX, Linux, POSIX. ------------------- */
+        const clockid_t id = CLOCK_REALTIME;
+#else
+        const clockid_t id = (clockid_t) -1; /* Unknown. */
+#endif /* CLOCK_* */
+        if (id != (clockid_t) -1 && clock_gettime(id, &ts) != -1)
+            return (double) ts.tv_sec + (double) ts.tv_nsec / 1000000000.0;
+        /* Fall thru. */
+    }
+#endif /* _POSIX_TIMERS */
+
+    /* AIX, BSD, Cygwin, HP-UX, Linux, OSX, POSIX, Solaris. ----- */
+    gettimeofday(&tm, NULL);
+    return (double) tm.tv_sec + (double) tm.tv_usec / 1000000.0;
+#else
+    return -1.0; /* Failed. */
+#endif
+}
+
+/**
+ * Returns the amount of CPU time used by the current process,
+ * in seconds, or -1.0 if an error occurred.
+ */
+double mu_timer_cpu(void)
+{
+#if defined(_WIN32)
+    /* Windows -------------------------------------------------- */
+    FILETIME createTime;
+    FILETIME exitTime;
+    FILETIME kernelTime;
+    FILETIME userTime;
+
+    /* This approach has a resolution of 1/64 second. Unfortunately, Windows' API does not offer
+     * better */
+    if (GetProcessTimes(GetCurrentProcess(), &createTime, &exitTime, &kernelTime, &userTime) != 0) {
+        ULARGE_INTEGER userSystemTime;
+        memcpy(&userSystemTime, &userTime, sizeof(ULARGE_INTEGER));
+        return (double) userSystemTime.QuadPart / 10000000.0;
+    }
+
+#elif defined(__unix__) || defined(__unix) || defined(unix) || (defined(__APPLE__) && defined(__MACH__))
+    /* AIX, BSD, Cygwin, HP-UX, Linux, OSX, and Solaris --------- */
+
+#if defined(_POSIX_TIMERS) && (_POSIX_TIMERS > 0)
+    /* Prefer high-res POSIX timers, when available. */
+    {
+        clockid_t id;
+        struct timespec ts;
+#if _POSIX_CPUTIME > 0
+        /* Clock ids vary by OS.  Query the id, if possible. */
+        if (clock_getcpuclockid(0, &id) == -1)
+#endif
+#if defined(CLOCK_PROCESS_CPUTIME_ID)
+            /* Use known clock id for AIX, Linux, or Solaris. */
+            id = CLOCK_PROCESS_CPUTIME_ID;
+#elif defined(CLOCK_VIRTUAL)
+        /* Use known clock id for BSD or HP-UX. */
+        id = CLOCK_VIRTUAL;
+#else
+        id = (clockid_t) -1;
+#endif
+        if (id != (clockid_t) -1 && clock_gettime(id, &ts) != -1)
+            return (double) ts.tv_sec + (double) ts.tv_nsec / 1000000000.0;
+    }
+#endif
+
+#if defined(RUSAGE_SELF)
+    {
+        struct rusage rusage;
+        if (getrusage(RUSAGE_SELF, &rusage) != -1)
+            return (double) rusage.ru_utime.tv_sec + (double) rusage.ru_utime.tv_usec / 1000000.0;
+    }
+#endif
+
+#if defined(_SC_CLK_TCK)
+    {
+        const double ticks = (double) sysconf(_SC_CLK_TCK);
+        struct tms tms;
+        if (times(&tms) != (clock_t) -1)
+            return (double) tms.tms_utime / ticks;
+    }
+#endif
+
+#if defined(CLOCKS_PER_SEC)
+    {
+        clock_t cl = clock();
+        if (cl != (clock_t) -1)
+            return (double) cl / (double) CLOCKS_PER_SEC;
+    }
+#endif
+
+#endif
+
+    return -1; /* Failed. */
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* MINUNIT_MINUNIT_C */