WL#3206 (Add unit tests):

An implementation of the TAP framework for writing unit tests.


Makefile.am:
  Adding directories mytap and unittest
configure.in:
  Building Makefiles for mytap and unittest directories.
mytap/Doxyfile:
  New BitKeeper file ``mytap/Doxyfile''
mytap/Makefile.am:
  New BitKeeper file ``mytap/Makefile.am''
mytap/t/basic.t.c:
  New BitKeeper file ``mytap/t/basic.t.c''
mytap/tap.c:
  New BitKeeper file ``mytap/tap.c''
mytap/tap.h:
  New BitKeeper file ``mytap/tap.h''
unittest/Makefile.am:
  New BitKeeper file ``unittest/Makefile.am''
unittest/examples/Makefile.am:
  New BitKeeper file ``unittest/examples/Makefile.am''
unittest/examples/no_plan.t.c:
  New BitKeeper file ``unittest/examples/no_plan.t.c''
unittest/examples/simple.t.c:
  New BitKeeper file ``unittest/examples/simple.t.c''
unittest/examples/skip.t.c:
  New BitKeeper file ``unittest/examples/skip.t.c''
unittest/examples/skip_all.t.c:
  New BitKeeper file ``unittest/examples/skip_all.t.c''
unittest/examples/todo.t.c:
  New BitKeeper file ``unittest/examples/todo.t.c''
unittest/mysys/Makefile.am:
  New BitKeeper file ``unittest/mysys/Makefile.am''
unittest/mysys/bitmap.t.c:
  New BitKeeper file ``unittest/mysys/bitmap.t.c''
unittest/unit.pl:
  New BitKeeper file ``unittest/unit.pl''

Makefile.am

@@ -29,7 +29,7 @@ SUBDIRS =		. include @docs_dirs@ @zlib_dir@ @yassl_dir@ \
 			@mysql_se_plugins@ \
 			netware @libmysqld_dirs@ \
 			@bench_dirs@ support-files @tools_dirs@ \
-			plugin
+			plugin mytap unittest
 
 DIST_SUBDIRS =		. include @docs_dirs@ zlib \
 			@readline_topdir@ sql-common \

configure.in

@@ -2599,6 +2599,8 @@ AC_SUBST(MAKE_BINARY_DISTRIBUTION_OPTIONS)
 
 # Output results
 AC_CONFIG_FILES(Makefile extra/Makefile mysys/Makefile dnl
+ mytap/Makefile mytap/t/Makefile unittest/Makefile dnl
+ unittest/mysys/Makefile unittest/examples/Makefile dnl
  strings/Makefile regex/Makefile storage/Makefile storage/heap/Makefile dnl
  storage/myisam/Makefile storage/myisammrg/Makefile dnl
  os2/Makefile os2/include/Makefile os2/include/sys/Makefile dnl
@@ -2619,6 +2621,7 @@ AC_CONFIG_FILES(Makefile extra/Makefile mysys/Makefile dnl
  cmd-line-utils/readline/Makefile dnl
  plugin/Makefile dnl
  plugin/fulltext/Makefile)
+
  AC_CONFIG_COMMANDS([default], , test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h)
  AC_OUTPUT
 

mytap/Makefile.am

+
+AM_CPPFLAGS  = -I$(top_builddir)/include -I$(top_srcdir)/include -I$(srcdir)
+AM_CPPFLAGS += -I$(top_builddir)/mytap
+
+noinst_LIBRARIES   = libmytap.a
+noinst_HEADERS     = tap.h
+
+libmytap_a_SOURCES = tap.c
+
+SUBDIRS            = . t

mytap/t/basic.t.c

+
+#include <stdlib.h>
+#include <tap.h>
+
+int main() {
+  plan(5);
+  ok(1 == 1, "testing basic functions");
+  ok(2 == 2, "");
+  ok(3 == 3, NULL);
+  if (1 == 1)
+    skip(2, "Sensa fragoli");
+  else {
+    ok(1 == 2, "Should not be run at all");
+    ok(1, "This one neither");
+  }
+  return exit_status();
+}

mytap/tap.c

+
+#include "tap.h"
+
+#include <stdlib.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+
+/**
+   Test data structure.
+
+   Data structure containing all information about the test suite.
+ */
+static TEST_DATA g_test = { 0 };
+
+/**
+   Output stream for test report message.
+
+   The macro is just a temporary solution.
+ */
+#define tapout stdout
+
+/**
+  Emit a TAP result and optionally a description.
+
+  @param pass  'true' if test passed, 'false' otherwise
+  @param fmt   Description of test in printf() format.
+  @param ap    Vararg list for the description string above.
+ */
+static int
+emit_tap(int pass, char const *fmt, va_list ap)
+{
+  fprintf(tapout, "%sok %d%s",
+          pass ? "" : "not ",
+          ++g_test.last,
+          (fmt && *fmt) ? " - " : "");
+  if (fmt && *fmt)
+    vfprintf(tapout, fmt, ap);
+}
+
+
+static int
+emit_dir(const char *dir, const char *exp)
+{
+  fprintf(tapout, " # %s %s", dir, exp);
+}
+
+
+static int
+emit_endl()
+{
+  fprintf(tapout, "\n");
+}
+
+void
+diag(char const *fmt, ...)
+{
+  va_list ap;
+  va_start(ap, fmt);
+  fprintf(tapout, "# ");
+  vfprintf(tapout, fmt, ap);
+  fprintf(tapout, "\n");
+  va_end(ap);
+}
+
+
+void
+plan(int const count)
+{
+  g_test.plan= count;
+  switch (count)
+  {
+  case NO_PLAN:
+  case SKIP_ALL:
+    break;
+  default:
+    if (plan > 0)
+      fprintf(tapout, "1..%d\n", count);
+    break;
+  }
+}
+
+
+void
+skip_all(char const *reason, ...)
+{
+  va_list ap;
+  va_start(ap, reason);
+  fprintf(tapout, "1..0 # skip ");
+  vfprintf(tapout, reason, ap);
+  va_end(ap);
+  exit(0);
+}
+
+void
+ok(int const pass, char const *fmt, ...)
+{
+  if (!pass && *g_test.todo == '\0')
+    ++g_test.failed;
+
+  va_list ap;
+  va_start(ap, fmt);
+  emit_tap(pass, fmt, ap);
+  va_end(ap);
+  if (*g_test.todo != '\0')
+    emit_dir("TODO", g_test.todo);
+  emit_endl();
+}
+
+
+void
+skip(int how_many, char const *fmt, ...)
+{
+  char reason[80];
+  if (fmt && *fmt)
+  {
+    va_list ap;
+    va_start(ap, fmt);
+    vsnprintf(reason, sizeof(reason), fmt, ap);
+    va_end(ap);
+  }
+  else
+    reason[0] = '\0';
+
+  while (how_many-- > 0)
+  {
+    va_list ap;
+    emit_tap(1, NULL, ap);
+    emit_dir("SKIP", reason);
+    emit_endl();
+  }
+}
+
+void
+todo_start(char const *message, ...)
+{
+  va_list ap;
+  va_start(ap, message);
+  vsnprintf(g_test.todo, sizeof(g_test.todo), message, ap);
+  va_end(ap);
+}
+
+void
+todo_end()
+{
+  *g_test.todo = '\0';
+}
+
+int exit_status() {
+  /*
+    If there were no plan, we write one last instead.
+  */
+  if (g_test.plan == NO_PLAN)
+    plan(g_test.last);
+
+  if (g_test.plan != g_test.last)
+  {
+    diag("%d tests planned but only %d executed",
+         g_test.plan, g_test.last);
+    return EXIT_FAILURE;
+  }
+
+  if (g_test.failed > 0)
+  {
+    diag("Failed %d tests!", g_test.failed);
+    return EXIT_FAILURE;
+  }
+
+  return EXIT_SUCCESS;
+}
+

mytap/tap.h

+#ifndef TAP_H
+#define TAP_H
+
+/*
+  
+ */
+
+#define NO_PLAN  (0)
+#define SKIP_ALL (-1)
+
+/**
+   Data about test plan.
+
+   @internal We are using the "typedef struct X { ... } X" idiom to
+   create class/struct X both in C and C++.
+ */
+typedef struct TEST_DATA {
+  /**
+     Number of tests that is planned to execute.
+
+     Can be zero (<code>NO_PLAN</code>) meaning that the plan string
+     will be printed at the end of test instead.
+  */
+  int plan;
+
+  /** Number of last test that was done or skipped. */
+  int last;
+
+  /** Number of tests that failed. */
+  int failed;
+
+  /** Todo reason. */
+  char todo[128];
+} TEST_DATA;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+   Set number of tests that is planned to execute.
+
+   The function also accepts the predefined constants SKIP_ALL and
+   NO_PLAN.
+
+   @param count
+   The planned number of tests to run.  Alternatively, the SKIP_ALL
+   and NO_PLAN can be supplied.
+*/
+void plan(int count);
+
+
+/**
+   Report test result as a TAP line.
+
+   Function used to write status of an individual test.  Call this
+   function in the following manner:
+
+   @code
+   ok(ducks == paddling,
+      "%d ducks did not paddle", ducks - paddling);
+   @endcode
+
+   @param pass Zero if the test failed, non-zero if it passed.
+   @param fmt  Format string in printf() format. NULL is allowed, in
+               which case nothing is printed.
+*/
+void ok(int pass, char const *fmt, ...)
+  __attribute__ ((format(printf,2,3)));
+
+/**
+   Skip a determined number of tests.
+
+   Function to print that <em>how_many</em> tests have been
+   skipped.  The reason is printed for each skipped test.  Observe
+   that this function does not do the actual skipping for you, it just
+   prints information that tests have been skipped.  It shall be used
+   in the following manner:
+
+   @code
+   if (ducks == 0) {
+     skip(2, "No ducks in the pond");
+   } else {
+      int i;
+      for (i = 0 ; i < 2 ; ++i)
+        ok(duck[i] == paddling, "is duck %d paddling?", i);
+   }
+   @endcode
+
+   @see SKIP_BLOCK_IF
+
+   @param how_many   Number of tests that are to be skipped.
+   @param reason     A reason for skipping the tests
+ */
+void skip(int how_many, char const *reason, ...)
+    __attribute__ ((format(printf,2,3)));
+
+
+/**
+   Helper macro to skip a block of code.  The macro can be used to
+   simplify conditionally skipping a block of code.  It is used in the
+   following manner:
+
+   @code
+   SKIP_BLOCK_IF(ducks == 0, 2, "No ducks in the pond")
+   {
+     int i;
+     for (i = 0 ; i < 2 ; ++i)
+       ok(duck[i] == paddling, "is duck %d paddling?", i);
+   }
+
+   @see skip
+
+   @endcode
+ */
+#define SKIP_BLOCK_IF(SKIP_IF_TRUE, COUNT, REASON) \
+  if (SKIP_IF_TRUE) skip((COUNT),(REASON)); else
+
+/**
+   Print a diagnostics message.
+
+   @param fmt  Diagnostics message in printf() format.
+ */
+void diag(char const *fmt, ...)
+  __attribute__ ((format(printf,1,2)));
+
+/**
+   Print summary report and return exit status.
+
+   This function will print a summary report of how many tests passed,
+   how many were skipped, and how many remains to do.  The function
+   should be called after all tests are executed in the following
+   manner:
+
+   @code
+   return exit_status();
+   @endcode
+
+   @returns EXIT_SUCCESS if all tests passed, EXIT_FAILURE if one or
+   more tests failed.
+ */
+int exit_status(void);
+
+
+/**
+   Skip entire test suite.
+
+   To skip the entire test suite, use this function. It will
+   automatically call exit(), so there is no need to have checks
+   around it.
+ */
+void skip_all(char const *reason, ...)
+  __attribute__ ((noreturn, format(printf, 1, 2)));
+
+/**
+   Start section of tests that are not yet ready.
+
+   To start a section of tests that are not ready and are expected to
+   fail, use this function and todo_end() in the following manner:
+
+   @code
+   todo_start("Not ready yet");
+   ok(is_rocketeering(duck), "Rocket-propelled ducks");
+   ok(is_kamikaze(duck), "Kamikaze ducks");
+   todo_end();
+   @endcode
+
+   @see todo_end
+
+   @note
+   It is not possible to nest todo sections.
+
+   @param message Message that will be printed before the todo tests.
+*/
+void todo_start(char const *message, ...)
+  __attribute__ ((format (printf, 1, 2)));
+
+/**
+   End a section of tests that are not yet ready.
+*/
+void todo_end();
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* TAP_H */

unittest/Makefile.am

+SUBDIRS = mysys examples

unittest/examples/Makefile.am

+AM_CPPFLAGS        = -I$(srcdir) -I$(top_builddir)/include
+AM_CPPFLAGS       += -I$(top_builddir)/mytap
+
+AM_LDFLAGS         = -L$(top_builddir)/mytap
+
+AM_CFLAGS          = -Wall -ansi -pedantic
+
+LDADD              = -lmytap
+
+noinst_PROGRAMS    = simple.t skip.t todo.t skip_all.t no_plan.t
+
+simple_t_SOURCES   = simple.t.c
+
+skip_t_SOURCES     = skip.t.c
+
+todo_t_SOURCES     = todo.t.c
+
+skip_all_t_SOURCES = skip_all.t.c
+
+no_plan_t_SOURCES  = no_plan.t.c

unittest/examples/no_plan.t.c

+
+#include <stdlib.h>
+#include <tap.h>
+
+/*
+  Sometimes, the number of tests is not known beforehand. In those
+  cases, the plan can be omitted and will instead be written at the
+  end of the test (inside exit_status()).
+
+  Use this sparingly, it is a last resort: planning how many tests you
+  are going to run will help you catch that offending case when some
+  tests are skipped for an unknown reason.
+*/
+int main() {
+  ok(1, NULL);
+  ok(1, NULL);
+  ok(1, NULL);
+  return exit_status();
+}

unittest/examples/simple.t.c

+
+#include <tap.h>
+
+unsigned int gcs(unsigned int a, unsigned int b)
+{
+  if (b > a) {
+    unsigned int t = a;
+    a = b;
+    b = t;
+  }
+
+  while (b != 0) {
+    unsigned int m = a % b;
+    a = b;
+    b = m;
+  }
+  return a;
+}
+
+int main() {
+  unsigned int a,b;
+  unsigned int failed;
+  plan(1);
+  diag("Testing basic functions");
+  failed = 0;
+  for (a = 1 ; a < 2000 ; ++a)
+    for (b = 1 ; b < 2000 ; ++b)
+    {
+      unsigned int d = gcs(a, b);
+      if (a % d != 0 || b % d != 0) {
+        ++failed;
+        diag("Failed for gcs(%4u,%4u)", a, b);
+      }
+    }
+  ok(failed == 0, "Testing gcs()");
+  return exit_status();
+}
+

unittest/examples/skip.t.c

+
+#include <tap.h>
+#include <stdlib.h>
+
+int main() {
+  plan(4);
+  ok(1, NULL);
+  ok(1, NULL);
+  SKIP_BLOCK_IF(1, 2, "No point") {
+    ok(1, NULL);
+    ok(1, NULL);
+  }
+  return exit_status();
+}

unittest/examples/skip_all.t.c

+
+#include <stdlib.h>
+#include <tap.h>
+
+int has_feature() {
+  return 0;
+}
+
+/*
+  In some cases, an entire test file does not make sense because there
+  some feature is missing.  In that case, the entire test case can be
+  skipped in the following manner.
+ */
+int main() {
+  if (!has_feature())
+    skip_all("Missing feature");
+  plan(4);
+  ok(1, NULL);
+  ok(1, NULL);
+  ok(1, NULL);
+  ok(1, NULL);
+  return exit_status();
+}

unittest/examples/todo.t.c

+
+#include <stdlib.h>
+#include <tap.h>
+
+int main()
+{
+  plan(4);
+  ok(1, NULL);
+  ok(1, NULL);
+  /*
+    Tests in the todo region is expected to fail. If they don't,
+    something is strange.
+  */
+  todo_start("Need to fix these");
+  ok(0, NULL);
+  ok(0, NULL);
+  todo_end();
+  return exit_status();
+}

unittest/mysys/Makefile.am

+
+AM_CPPFLAGS      = -I$(srcdir) -I$(top_builddir)/include
+AM_CPPFLAGS     += -I$(top_builddir)/mytap
+
+AM_CFLAGS        = -Wall -ansi -pedantic
+
+AM_LDFLAGS       = -L$(top_builddir)/mytap -L$(top_builddir)/mysys
+AM_LDFLAGS      += -L$(top_builddir)/strings
+
+LDADD            = -lmytap -lmysys -lmystrings
+
+noinst_PROGRAMS  = bitmap.t
+
+bitmap_t_SOURCES = bitmap.t.c

unittest/mysys/bitmap.t.c

+
+#include <tap.h>
+
+#include <my_global.h>
+#include "my_bitmap.h"
+
+#include <string.h>
+
+static void bitmap_print(MY_BITMAP *map)
+{
+  uint32 *to= map->bitmap, *end= map->last_word_ptr;
+  while (to <= end)
+  {
+    fprintf(stderr,"0x%x ", *to++);
+  }
+  fprintf(stderr,"\n");    
+}
+
+uint get_rand_bit(uint bitsize)
+{
+  return (rand() % bitsize);
+}
+
+bool test_set_get_clear_bit(MY_BITMAP *map, uint bitsize)
+{
+  uint i, test_bit;
+  uint no_loops= bitsize > 128 ? 128 : bitsize;
+  for (i=0; i < no_loops; i++)
+  {
+    test_bit= get_rand_bit(bitsize);
+    bitmap_set_bit(map, test_bit);
+    if (!bitmap_is_set(map, test_bit))
+      goto error1;
+    bitmap_clear_bit(map, test_bit);
+    if (bitmap_is_set(map, test_bit))
+      goto error2;
+  }
+  return FALSE;
+error1:
+  printf("Error in set bit, bit %u, bitsize = %u", test_bit, bitsize);
+  return TRUE;
+error2:
+  printf("Error in clear bit, bit %u, bitsize = %u", test_bit, bitsize);
+  return TRUE;
+}
+
+bool test_flip_bit(MY_BITMAP *map, uint bitsize)
+{
+  uint i, test_bit;
+  uint no_loops= bitsize > 128 ? 128 : bitsize;
+  for (i=0; i < no_loops; i++)
+  {
+    test_bit= get_rand_bit(bitsize);
+    bitmap_flip_bit(map, test_bit);
+    if (!bitmap_is_set(map, test_bit))
+      goto error1;
+    bitmap_flip_bit(map, test_bit);
+    if (bitmap_is_set(map, test_bit))
+      goto error2;
+  }
+  return FALSE;
+error1:
+  printf("Error in flip bit 1, bit %u, bitsize = %u", test_bit, bitsize);
+  return TRUE;
+error2:
+  printf("Error in flip bit 2, bit %u, bitsize = %u", test_bit, bitsize);
+  return TRUE;
+}
+
+bool test_operators(MY_BITMAP *map, uint bitsize)
+{
+  return FALSE;
+}
+
+bool test_get_all_bits(MY_BITMAP *map, uint bitsize)
+{
+  uint i;
+  bitmap_set_all(map);
+  if (!bitmap_is_set_all(map))
+    goto error1;
+  if (!bitmap_is_prefix(map, bitsize))
+    goto error5;
+  bitmap_clear_all(map);
+  if (!bitmap_is_clear_all(map))
+    goto error2;
+  if (!bitmap_is_prefix(map, 0))
+    goto error6;
+  for (i=0; i<bitsize;i++)
+    bitmap_set_bit(map, i);
+  if (!bitmap_is_set_all(map))
+    goto error3;
+  for (i=0; i<bitsize;i++)
+    bitmap_clear_bit(map, i);
+  if (!bitmap_is_clear_all(map))
+    goto error4;
+  return FALSE;
+error1:
+  diag("Error in set_all, bitsize = %u", bitsize);
+  return TRUE;
+error2:
+  diag("Error in clear_all, bitsize = %u", bitsize);
+  return TRUE;
+error3:
+  diag("Error in bitmap_is_set_all, bitsize = %u", bitsize);
+  return TRUE;
+error4:
+  diag("Error in bitmap_is_clear_all, bitsize = %u", bitsize);
+  return TRUE;
+error5:
+  diag("Error in set_all through set_prefix, bitsize = %u", bitsize);
+  return TRUE;
+error6:
+  diag("Error in clear_all through set_prefix, bitsize = %u", bitsize);
+  return TRUE;
+}
+
+bool test_compare_operators(MY_BITMAP *map, uint bitsize)
+{
+  uint i, j, test_bit1, test_bit2, test_bit3,test_bit4;
+  uint no_loops= bitsize > 128 ? 128 : bitsize;
+  MY_BITMAP map2_obj, map3_obj;
+  MY_BITMAP *map2= &map2_obj, *map3= &map3_obj;
+  uint32 map2buf[1024];
+  uint32 map3buf[1024];
+  bitmap_init(&map2_obj, map2buf, bitsize, FALSE);
+  bitmap_init(&map3_obj, map3buf, bitsize, FALSE);
+  bitmap_clear_all(map2);
+  bitmap_clear_all(map3);
+  for (i=0; i < no_loops; i++)
+  {
+    test_bit1=get_rand_bit(bitsize);
+    bitmap_set_prefix(map, test_bit1);
+    test_bit2=get_rand_bit(bitsize);
+    bitmap_set_prefix(map2, test_bit2);
+    bitmap_intersect(map, map2);
+    test_bit3= test_bit2 < test_bit1 ? test_bit2 : test_bit1;
+    bitmap_set_prefix(map3, test_bit3);
+    if (!bitmap_cmp(map, map3))
+      goto error1;
+    bitmap_clear_all(map);
+    bitmap_clear_all(map2);
+    bitmap_clear_all(map3);
+    test_bit1=get_rand_bit(bitsize);
+    test_bit2=get_rand_bit(bitsize);
+    test_bit3=get_rand_bit(bitsize);
+    bitmap_set_prefix(map, test_bit1);
+    bitmap_set_prefix(map2, test_bit2);
+    test_bit3= test_bit2 > test_bit1 ? test_bit2 : test_bit1;
+    bitmap_set_prefix(map3, test_bit3);
+    bitmap_union(map, map2);
+    if (!bitmap_cmp(map, map3))
+      goto error2;
+    bitmap_clear_all(map);
+    bitmap_clear_all(map2);
+    bitmap_clear_all(map3);
+    test_bit1=get_rand_bit(bitsize);
+    test_bit2=get_rand_bit(bitsize);
+    test_bit3=get_rand_bit(bitsize);
+    bitmap_set_prefix(map, test_bit1);
+    bitmap_set_prefix(map2, test_bit2);
+    bitmap_xor(map, map2);
+    test_bit3= test_bit2 > test_bit1 ? test_bit2 : test_bit1;
+    test_bit4= test_bit2 < test_bit1 ? test_bit2 : test_bit1;
+    bitmap_set_prefix(map3, test_bit3);
+    for (j=0; j < test_bit4; j++)
+      bitmap_clear_bit(map3, j);
+    if (!bitmap_cmp(map, map3))
+      goto error3;
+    bitmap_clear_all(map);
+    bitmap_clear_all(map2);
+    bitmap_clear_all(map3);
+    test_bit1=get_rand_bit(bitsize);
+    test_bit2=get_rand_bit(bitsize);
+    test_bit3=get_rand_bit(bitsize);
+    bitmap_set_prefix(map, test_bit1);
+    bitmap_set_prefix(map2, test_bit2);
+    bitmap_subtract(map, map2);
+    if (test_bit2 < test_bit1)
+    {
+      bitmap_set_prefix(map3, test_bit1);
+      for (j=0; j < test_bit2; j++)
+        bitmap_clear_bit(map3, j);
+    }
+    if (!bitmap_cmp(map, map3))
+      goto error4;
+    bitmap_clear_all(map);
+    bitmap_clear_all(map2);
+    bitmap_clear_all(map3);
+    test_bit1=get_rand_bit(bitsize);
+    bitmap_set_prefix(map, test_bit1);
+    bitmap_invert(map);
+    bitmap_set_all(map3);
+    for (j=0; j < test_bit1; j++)
+      bitmap_clear_bit(map3, j);
+    if (!bitmap_cmp(map, map3))
+      goto error5;
+    bitmap_clear_all(map);
+    bitmap_clear_all(map3);
+  }
+  return FALSE;
+error1:
+  diag("intersect error  bitsize=%u,size1=%u,size2=%u", bitsize,
+  test_bit1,test_bit2);
+  return TRUE;
+error2:
+  diag("union error  bitsize=%u,size1=%u,size2=%u", bitsize,
+  test_bit1,test_bit2);
+  return TRUE;
+error3:
+  diag("xor error  bitsize=%u,size1=%u,size2=%u", bitsize,
+  test_bit1,test_bit2);
+  return TRUE;
+error4:
+  diag("subtract error  bitsize=%u,size1=%u,size2=%u", bitsize,
+  test_bit1,test_bit2);
+  return TRUE;
+error5:
+  diag("invert error  bitsize=%u,size=%u", bitsize,
+  test_bit1);
+  return TRUE;
+}
+
+bool test_count_bits_set(MY_BITMAP *map, uint bitsize)
+{
+  uint i, bit_count=0, test_bit;
+  uint no_loops= bitsize > 128 ? 128 : bitsize;
+  for (i=0; i < no_loops; i++)
+  {
+    test_bit=get_rand_bit(bitsize);
+    if (!bitmap_is_set(map, test_bit))
+    {
+      bitmap_set_bit(map, test_bit);
+      bit_count++;
+    }
+  }
+  if (bit_count==0 && bitsize > 0)
+    goto error1;
+  if (bitmap_bits_set(map) != bit_count)
+    goto error2;
+  return FALSE;
+error1:
+  diag("No bits set  bitsize = %u", bitsize);
+  return TRUE;
+error2:
+  diag("Wrong count of bits set, bitsize = %u", bitsize);
+  return TRUE;
+}
+
+bool test_get_first_bit(MY_BITMAP *map, uint bitsize)
+{
+  uint i, j, test_bit;
+  uint no_loops= bitsize > 128 ? 128 : bitsize;
+  for (i=0; i < no_loops; i++)
+  {
+    test_bit=get_rand_bit(bitsize);
+    bitmap_set_bit(map, test_bit);
+    if (bitmap_get_first_set(map) != test_bit)
+      goto error1;
+    bitmap_set_all(map);
+    bitmap_clear_bit(map, test_bit);
+    if (bitmap_get_first(map) != test_bit)
+      goto error2;
+    bitmap_clear_all(map);
+  }
+  return FALSE;
+error1:
+  diag("get_first_set error bitsize=%u,prefix_size=%u",bitsize,test_bit);
+  return TRUE;
+error2:
+  diag("get_first error bitsize= %u, prefix_size= %u",bitsize,test_bit);
+  return TRUE;
+}
+
+bool test_get_next_bit(MY_BITMAP *map, uint bitsize)
+{
+  uint i, j, test_bit;
+  uint no_loops= bitsize > 128 ? 128 : bitsize;
+  for (i=0; i < no_loops; i++)
+  {
+    test_bit=get_rand_bit(bitsize);
+    for (j=0; j < test_bit; j++)
+      bitmap_set_next(map);
+    if (!bitmap_is_prefix(map, test_bit))
+      goto error1;
+    bitmap_clear_all(map);
+  }
+  return FALSE;
+error1:
+  diag("get_next error  bitsize= %u, prefix_size= %u", bitsize,test_bit);
+  return TRUE;
+}
+
+bool test_prefix(MY_BITMAP *map, uint bitsize)
+{
+  uint i, j, test_bit;
+  uint no_loops= bitsize > 128 ? 128 : bitsize;
+  for (i=0; i < no_loops; i++)
+  {
+    test_bit=get_rand_bit(bitsize);
+    bitmap_set_prefix(map, test_bit);
+    if (!bitmap_is_prefix(map, test_bit))
+      goto error1;
+    bitmap_clear_all(map);
+    for (j=0; j < test_bit; j++)
+      bitmap_set_bit(map, j);
+    if (!bitmap_is_prefix(map, test_bit))
+      goto error2;
+    bitmap_set_all(map);
+    for (j=bitsize - 1; ~(j-test_bit); j--)
+      bitmap_clear_bit(map, j);
+    if (!bitmap_is_prefix(map, test_bit))
+      goto error3;
+    bitmap_clear_all(map);
+  }
+  return FALSE;
+error1:
+  diag("prefix1 error  bitsize = %u, prefix_size = %u", bitsize,test_bit);
+  return TRUE;
+error2:
+  diag("prefix2 error  bitsize = %u, prefix_size = %u", bitsize,test_bit);
+  return TRUE;
+error3:
+  diag("prefix3 error  bitsize = %u, prefix_size = %u", bitsize,test_bit);
+  return TRUE;
+}
+
+
+bool do_test(uint bitsize)
+{
+  MY_BITMAP map;
+  uint32 buf[1024];
+  if (bitmap_init(&map, buf, bitsize, FALSE))
+  {
+    diag("init error for bitsize %d", bitsize);
+    goto error;
+  }
+  if (test_set_get_clear_bit(&map,bitsize))
+    goto error;
+  bitmap_clear_all(&map);
+  if (test_flip_bit(&map,bitsize))
+    goto error;
+  bitmap_clear_all(&map);
+  if (test_operators(&map,bitsize))
+    goto error;
+  bitmap_clear_all(&map);
+  if (test_get_all_bits(&map, bitsize))
+    goto error;
+  bitmap_clear_all(&map);
+  if (test_compare_operators(&map,bitsize))
+    goto error;
+  bitmap_clear_all(&map);
+  if (test_count_bits_set(&map,bitsize))
+    goto error;
+  bitmap_clear_all(&map);
+  if (test_get_first_bit(&map,bitsize))
+    goto error;
+  bitmap_clear_all(&map);
+  if (test_get_next_bit(&map,bitsize))
+    goto error;
+  if (test_prefix(&map,bitsize))
+    goto error;
+  return FALSE;
+error:
+  return TRUE;
+}
+
+int main()
+{
+  int i;
+  plan(4095);
+  for (i= 1; i < 4096; i++)
+    ok(do_test(i) == 0, "bitmap size %d", i);
+  return exit_status();
+}

unittest/unit.pl

+#!/usr/bin/perl
+
+# Override _command_line in the standard Perl test harness to prevent
+# it from using "perl" to run the test scripts.
+package MySQL::Straps;
+use base qw(Test::Harness::Straps);
+sub _command_line { return $_[1] }
+
+package main;
+
+use strict;
+use Test::Harness;
+use File::Find;
+
+sub run_cmd (@);
+
+my %dispatch = (
+    "run" => \&run_cmd,
+);
+
+=head1 NAME
+
+unit - Run unit tests in directory
+
+=head1 SYNOPSIS
+
+  unit run
+
+=cut
+
+my $cmd = shift;
+
+if (defined $cmd && exists $dispatch{$cmd}) {
+    $dispatch{$cmd}->(@ARGV);
+} else {
+    print "Unknown command", (defined $cmd ? " $cmd" : ""), ".\n";
+    print "Available commands are: ", join(", ", keys %dispatch), "\n";
+}
+
+=head2 run
+
+Run all unit tests in the current directory and all subdirectories.
+
+=cut
+
+
+sub _find_test_files (@) {
+    my @dirs = @_;
+    my @files;
+    find sub { 
+        $File::Find::prune = 1 if /^SCCS$/;
+        push(@files, $File::Find::name) if -x _ && /\.t\z/;
+    }, @dirs;
+    return @files;
+}
+
+sub run_cmd (@) {
+    my @files;
+
+    push(@_, '.') if @_ == 0;
+
+    foreach my $name (@_) {
+        push(@files, _find_test_files $name) if -d $name;
+        push(@files, $name) if -f $name;
+    }
+    
+    if (@files > 0) {
+        # Removing the first './' from the file names
+        foreach (@files) { s!^\./!! }
+        
+        # Install the strap above instead of the default strap
+        $Test::Harness::Strap = MySQL::Straps->new;
+        
+        runtests @files;
+    }
+}
+