X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=tests%2Flibpspp%2Fll-test.c;h=7bf01248c1b7a4cf2fe695431590e61fbaa7a574;hb=7891023bc75024553f2564017b685cdb13eeec33;hp=03fc0fd7d8be953061a7b7ed3ad4a6dd860426b8;hpb=480a0746507ce73d26f528b56dc3ed80195096e0;p=pspp

diff --git a/tests/libpspp/ll-test.c b/tests/libpspp/ll-test.c
index 03fc0fd7d8..7bf01248c1 100644
--- a/tests/libpspp/ll-test.c
+++ b/tests/libpspp/ll-test.c
@@ -1,20 +1,18 @@
-/* PSPP - computes sample statistics.
-   Copyright (C) 2006 Free Software Foundation, Inc.
+/* PSPP - a program for statistical analysis.
+   Copyright (C) 2006, 2010 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or
-   modify it under the terms of the GNU General Public License as
-   published by the Free Software Foundation; either version 2 of the
-   License, or (at your option) any later version.
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful, but
-   WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   General Public License for more details.
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-   02110-1301, USA. */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>. */
 
 /* This is a test program for the ll_* routines defined in
    ll.c.  This test program aims to be as comprehensive as
@@ -28,6 +26,10 @@
    See llx-test.c for a similar program for the llx_*
    routines. */
 
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
 #include <libpspp/ll.h>
 #include <assert.h>
 #include <stdio.h>
@@ -41,26 +43,22 @@
 #define UNUSED
 #endif
 
-/* Currently running test. */
-static const char *test_name;
-
 /* Exit with a failure code.
    (Place a breakpoint on this function while debugging.) */
 static void
-check_die (void) 
+check_die (void)
 {
-  exit (EXIT_FAILURE);   
+  exit (EXIT_FAILURE);
 }
 
 /* If OK is not true, prints a message about failure on the
    current source file and the given LINE and terminates. */
 static void
-check_func (bool ok, int line) 
+check_func (bool ok, int line)
 {
-  if (!ok) 
+  if (!ok)
     {
-      printf ("Check failed in %s test at %s, line %d\n",
-              test_name, __FILE__, line);
+      fprintf (stderr, "%s:%d: check failed\n", __FILE__, line);
       check_die ();
     }
 }
@@ -81,9 +79,9 @@ xalloc_die (void)
 
 /* Allocates and returns N bytes of memory. */
 static void *
-xmalloc (size_t n) 
+xmalloc (size_t n)
 {
-  if (n != 0) 
+  if (n != 0)
     {
       void *p = malloc (n);
       if (p == NULL)
@@ -97,7 +95,7 @@ xmalloc (size_t n)
 
 /* Allocates and returns N * M bytes of memory. */
 static void *
-xnmalloc (size_t n, size_t m) 
+xnmalloc (size_t n, size_t m)
 {
   if ((size_t) -1 / m <= n)
     xalloc_die ();
@@ -114,7 +112,7 @@ struct element
     int y;                      /* Secondary value. */
   };
 
-int aux_data;
+static int aux_data;
 
 /* Returns the `struct element' that LL is embedded within. */
 static struct element *
@@ -130,7 +128,7 @@ print_list (struct ll_list *list)
   struct ll *x;
 
   printf ("list:");
-  for (x = ll_head (list); x != ll_null (list); x = ll_next (x)) 
+  for (x = ll_head (list); x != ll_null (list); x = ll_next (x))
     {
       struct element *e = ll_to_element (x);
       printf (" %d", e->x);
@@ -142,19 +140,19 @@ print_list (struct ll_list *list)
    AUX for each element in LIST. */
 static void UNUSED
 print_pred (struct ll_list *list,
-            ll_predicate_func *predicate, void *aux UNUSED) 
+            ll_predicate_func *predicate, void *aux UNUSED)
 {
   struct ll *x;
 
   printf ("pred:");
-  for (x = ll_head (list); x != ll_null (list); x = ll_next (x)) 
+  for (x = ll_head (list); x != ll_null (list); x = ll_next (x))
     printf (" %d", predicate (x, aux));
   printf ("\n");
 }
 
 /* Prints the CNT numbers in VALUES. */
 static void UNUSED
-print_array (int values[], size_t cnt) 
+print_array (int values[], size_t cnt)
 {
   size_t i;
 
@@ -167,7 +165,7 @@ print_array (int values[], size_t cnt)
 /* Compares the `x' values in A and B and returns a strcmp-type
    return value.  Verifies that AUX points to aux_data. */
 static int
-compare_elements (const struct ll *a_, const struct ll *b_, void *aux) 
+compare_elements (const struct ll *a_, const struct ll *b_, void *aux)
 {
   const struct element *a = ll_to_element (a_);
   const struct element *b = ll_to_element (b_);
@@ -180,7 +178,7 @@ compare_elements (const struct ll *a_, const struct ll *b_, void *aux)
    strcmp-type return value.  Verifies that AUX points to
    aux_data. */
 static int
-compare_elements_x_y (const struct ll *a_, const struct ll *b_, void *aux) 
+compare_elements_x_y (const struct ll *a_, const struct ll *b_, void *aux)
 {
   const struct element *a = ll_to_element (a_);
   const struct element *b = ll_to_element (b_);
@@ -209,10 +207,10 @@ compare_elements_y (const struct ll *a_, const struct ll *b_, void *aux)
 /* Returns true if the bit in *PATTERN indicated by `x in
    *ELEMENT is set, false otherwise. */
 static bool
-pattern_pred (const struct ll *element_, void *pattern_) 
+pattern_pred (const struct ll *element_, void *pattern_)
 {
   const struct element *element = ll_to_element (element_);
-  unsigned *pattern = pattern_;
+  unsigned int *pattern = pattern_;
 
   return (*pattern & (1u << element->x)) != 0;
 }
@@ -229,7 +227,7 @@ allocate_elements (size_t n,
                    struct ll_list *list,
                    struct element ***elems,
                    struct ll ***elemp,
-                   int **values) 
+                   int **values)
 {
   size_t i;
 
@@ -237,33 +235,33 @@ allocate_elements (size_t n,
     ll_init (list);
 
   *elems = xnmalloc (n, sizeof **elems);
-  for (i = 0; i < n; i++) 
+  for (i = 0; i < n; i++)
     {
       (*elems)[i] = xmalloc (sizeof ***elems);
       if (list != NULL)
         ll_push_tail (list, &(*elems)[i]->ll);
     }
-  
-  if (elemp != NULL) 
+
+  if (elemp != NULL)
     {
       *elemp = xnmalloc (n + 1, sizeof *elemp);
       for (i = 0; i < n; i++)
         (*elemp)[i] = &(*elems)[i]->ll;
       (*elemp)[n] = ll_null (list);
     }
-  
+
   if (values != NULL)
     *values = xnmalloc (n, sizeof *values);
 }
 
 /* Copies the CNT values of `x' from LIST into VALUES[]. */
 static void
-extract_values (struct ll_list *list, int values[], size_t cnt) 
+extract_values (struct ll_list *list, int values[], size_t cnt)
 {
   struct ll *x;
-  
+
   check (ll_count (list) == cnt);
-  for (x = ll_head (list); x != ll_null (list); x = ll_next (x)) 
+  for (x = ll_head (list); x != ll_null (list); x = ll_next (x))
     {
       struct element *e = ll_to_element (x);
       *values++ = e->x;
@@ -278,16 +276,16 @@ allocate_ascending (size_t n,
                     struct ll_list *list,
                     struct element ***elems,
                     struct ll ***elemp,
-                    int **values) 
+                    int **values)
 {
   size_t i;
 
   allocate_elements (n, list, elems, elemp, values);
 
-  for (i = 0; i < n; i++) 
+  for (i = 0; i < n; i++)
     (*elems)[i]->x = i;
   if (values != NULL)
-    extract_values (list, *values, n); 
+    extract_values (list, *values, n);
 }
 
 /* As allocate_elements, but sets binary values extracted from
@@ -299,16 +297,16 @@ allocate_pattern (size_t n,
                   struct ll_list *list,
                   struct element ***elems,
                   struct ll ***elemp,
-                  int **values) 
+                  int **values)
 {
   size_t i;
 
   allocate_elements (n, list, elems, elemp, values);
-  
-  for (i = 0; i < n; i++) 
+
+  for (i = 0; i < n; i++)
     (*elems)[i]->x = (pattern & (1 << i)) != 0;
   if (values != NULL)
-    extract_values (list, *values, n); 
+    extract_values (list, *values, n);
 }
 
 /* Randomly shuffles the CNT elements in ARRAY, each of which is
@@ -320,10 +318,10 @@ random_shuffle (void *array_, size_t cnt, size_t size)
   char *tmp = xmalloc (size);
   size_t i;
 
-  for (i = 0; i < cnt; i++) 
+  for (i = 0; i < cnt; i++)
     {
       size_t j = rand () % (cnt - i) + i;
-      if (i != j) 
+      if (i != j)
         {
           memcpy (tmp, array + j * size, size);
           memcpy (array + j * size, array + i * size, size);
@@ -340,17 +338,17 @@ allocate_random (size_t n,
                  struct ll_list *list,
                  struct element ***elems,
                  struct ll ***elemp,
-                 int **values) 
+                 int **values)
 {
   size_t i;
 
   allocate_elements (n, list, elems, elemp, values);
-  
-  for (i = 0; i < n; i++) 
+
+  for (i = 0; i < n; i++)
     (*elems)[i]->x = i;
   random_shuffle (*elems, n, sizeof **elems);
   if (values != NULL)
-    extract_values (list, *values, n); 
+    extract_values (list, *values, n);
 }
 
 /* Frees the N elements of ELEMS, ELEMP, and VALUES. */
@@ -358,20 +356,20 @@ static void
 free_elements (size_t n,
                struct element **elems,
                struct ll **elemp,
-               int *values) 
+               int *values)
 {
   size_t i;
 
   for (i = 0; i < n; i++)
     free (elems[i]);
-  free (elems); 
+  free (elems);
   free (elemp);
   free (values);
 }
 
 /* Compares A and B and returns a strcmp-type return value. */
 static int
-compare_ints (const void *a_, const void *b_, void *aux UNUSED) 
+compare_ints (const void *a_, const void *b_, void *aux UNUSED)
 {
   const int *a = a_;
   const int *b = b_;
@@ -381,7 +379,7 @@ compare_ints (const void *a_, const void *b_, void *aux UNUSED)
 
 /* Compares A and B and returns a strcmp-type return value. */
 static int
-compare_ints_noaux (const void *a_, const void *b_) 
+compare_ints_noaux (const void *a_, const void *b_)
 {
   const int *a = a_;
   const int *b = b_;
@@ -391,7 +389,7 @@ compare_ints_noaux (const void *a_, const void *b_)
 
 /* Checks that LIST contains the CNT values in ELEMENTS. */
 static void
-check_list_contents (struct ll_list *list, int elements[], size_t cnt) 
+check_list_contents (struct ll_list *list, int elements[], size_t cnt)
 {
   struct ll *ll;
   size_t i;
@@ -399,7 +397,7 @@ check_list_contents (struct ll_list *list, int elements[], size_t cnt)
   check ((cnt == 0) == ll_is_empty (list));
 
   /* Iterate in forward order. */
-  for (ll = ll_head (list), i = 0; i < cnt; ll = ll_next (ll), i++) 
+  for (ll = ll_head (list), i = 0; i < cnt; ll = ll_next (ll), i++)
     {
       struct element *e = ll_to_element (ll);
       check (elements[i] == e->x);
@@ -430,7 +428,7 @@ lexicographical_compare_3way (const void *array1, size_t count1,
                               size_t size,
                               int (*compare) (const void *, const void *,
                                               void *aux),
-                              void *aux) 
+                              void *aux)
 {
   const char *first1 = array1;
   const char *first2 = array2;
@@ -469,7 +467,7 @@ test_push_pop (void)
   /* Push on tail. */
   ll_init (&list);
   check_list_contents (&list, NULL, 0);
-  for (i = 0; i < max_elems; i++) 
+  for (i = 0; i < max_elems; i++)
     {
       values[i] = elems[i]->x = i;
       ll_push_tail (&list, &elems[i]->ll);
@@ -477,7 +475,7 @@ test_push_pop (void)
     }
 
   /* Remove from tail. */
-  for (i = 0; i < max_elems; i++) 
+  for (i = 0; i < max_elems; i++)
     {
       struct element *e = ll_to_element (ll_pop_tail (&list));
       check (e->x == max_elems - i - 1);
@@ -494,7 +492,7 @@ test_push_pop (void)
     }
 
   /* Remove from start. */
-  for (i = 0; i < max_elems; i++) 
+  for (i = 0; i < max_elems; i++)
     {
       struct element *e = ll_to_element (ll_pop_head (&list));
       check (e->x == (int) i);
@@ -506,12 +504,12 @@ test_push_pop (void)
 
 /* Tests insertion and removal at arbitrary positions. */
 static void
-test_insert_remove (void) 
+test_insert_remove (void)
 {
   const int max_elems = 16;
   int cnt;
 
-  for (cnt = 0; cnt < max_elems; cnt++) 
+  for (cnt = 0; cnt < max_elems; cnt++)
     {
       struct element **elems;
       struct ll **elemp;
@@ -523,7 +521,7 @@ test_insert_remove (void)
 
       allocate_ascending (cnt, &list, &elems, &elemp, NULL);
       extra.x = -1;
-      for (pos = 0; pos <= cnt; pos++) 
+      for (pos = 0; pos <= cnt; pos++)
         {
           int i, j;
 
@@ -547,12 +545,12 @@ test_insert_remove (void)
 
 /* Tests swapping individual elements. */
 static void
-test_swap (void) 
+test_swap (void)
 {
   const int max_elems = 8;
   int cnt;
 
-  for (cnt = 0; cnt <= max_elems; cnt++) 
+  for (cnt = 0; cnt <= max_elems; cnt++)
     {
       struct ll_list list;
       struct element **elems;
@@ -563,9 +561,9 @@ test_swap (void)
       allocate_ascending (cnt, &list, &elems, NULL, &values);
       check_list_contents (&list, values, cnt);
 
-      for (i = 0; i < cnt; i++) 
-        for (j = 0; j < cnt; j++) 
-          for (k = 0; k < 2; k++) 
+      for (i = 0; i < cnt; i++)
+        for (j = 0; j < cnt; j++)
+          for (k = 0; k < 2; k++)
             {
               int t;
 
@@ -574,23 +572,23 @@ test_swap (void)
               values[i] = values[j];
               values[j] = t;
               check_list_contents (&list, values, cnt);
-            } 
-  
+            }
+
       free_elements (cnt, elems, NULL, values);
     }
 }
 
 /* Tests swapping ranges of list elements. */
 static void
-test_swap_range (void) 
+test_swap_range (void)
 {
   const int max_elems = 8;
   int cnt, a0, a1, b0, b1, r;
 
-  for (cnt = 0; cnt <= max_elems; cnt++) 
-    for (a0 = 0; a0 <= cnt; a0++) 
+  for (cnt = 0; cnt <= max_elems; cnt++)
+    for (a0 = 0; a0 <= cnt; a0++)
       for (a1 = a0; a1 <= cnt; a1++)
-        for (b0 = a1; b0 <= cnt; b0++) 
+        for (b0 = a1; b0 <= cnt; b0++)
           for (b1 = b0; b1 <= cnt; b1++)
             for (r = 0; r < 2; r++)
               {
@@ -629,14 +627,14 @@ test_swap_range (void)
 
 /* Tests removing ranges of list elements. */
 static void
-test_remove_range (void) 
+test_remove_range (void)
 {
   const int max_elems = 8;
 
   int cnt, r0, r1;
 
   for (cnt = 0; cnt <= max_elems; cnt++)
-    for (r0 = 0; r0 <= cnt; r0++) 
+    for (r0 = 0; r0 <= cnt; r0++)
       for (r1 = r0; r1 <= cnt; r1++)
         {
           struct ll_list list;
@@ -664,7 +662,7 @@ test_remove_range (void)
 
 /* Tests ll_remove_equal. */
 static void
-test_remove_equal (void) 
+test_remove_equal (void)
 {
   const int max_elems = 8;
 
@@ -673,7 +671,7 @@ test_remove_equal (void)
   for (cnt = 0; cnt <= max_elems; cnt++)
     for (r0 = 0; r0 <= cnt; r0++)
       for (r1 = r0; r1 <= cnt; r1++)
-        for (eq_pat = 0; eq_pat <= 1 << cnt; eq_pat++) 
+        for (eq_pat = 0; eq_pat <= 1 << cnt; eq_pat++)
           {
             struct ll_list list;
             struct element **elems;
@@ -687,13 +685,13 @@ test_remove_equal (void)
             allocate_elements (cnt, &list, &elems, &elemp, &values);
 
             remaining = 0;
-            for (i = 0; i < cnt; i++) 
+            for (i = 0; i < cnt; i++)
               {
                 int x = eq_pat & (1 << i) ? -1 : i;
                 bool delete = x == -1 && r0 <= i && i < r1;
                 elems[i]->x = x;
                 if (!delete)
-                  values[remaining++] = x; 
+                  values[remaining++] = x;
               }
 
             to_remove.x = -1;
@@ -708,7 +706,7 @@ test_remove_equal (void)
 
 /* Tests ll_remove_if. */
 static void
-test_remove_if (void) 
+test_remove_if (void)
 {
   const int max_elems = 8;
 
@@ -717,7 +715,7 @@ test_remove_if (void)
   for (cnt = 0; cnt <= max_elems; cnt++)
     for (r0 = 0; r0 <= cnt; r0++)
       for (r1 = r0; r1 <= cnt; r1++)
-        for (pattern = 0; pattern <= 1 << cnt; pattern++) 
+        for (pattern = 0; pattern <= 1 << cnt; pattern++)
           {
             struct ll_list list;
             struct element **elems;
@@ -730,15 +728,15 @@ test_remove_if (void)
             allocate_elements (cnt, &list, &elems, &elemp, &values);
 
             remaining = 0;
-            for (i = 0; i < cnt; i++) 
+            for (i = 0; i < cnt; i++)
               {
                 bool delete = (pattern & (1 << i)) && r0 <= i && i < r1;
                 elems[i]->x = i;
                 if (!delete)
-                  values[remaining++] = i; 
+                  values[remaining++] = i;
               }
 
-            check ((int) ll_remove_if (elemp[r0], elemp[r1], 
+            check ((int) ll_remove_if (elemp[r0], elemp[r1],
                                        pattern_pred, &pattern)
                    == cnt - remaining);
             check_list_contents (&list, values, remaining);
@@ -749,7 +747,7 @@ test_remove_if (void)
 
 /* Tests ll_moved. */
 static void
-test_moved (void) 
+test_moved (void)
 {
   const int max_elems = 8;
 
@@ -768,7 +766,7 @@ test_moved (void)
       allocate_elements (cnt, NULL, &new_elems, NULL, NULL);
       check_list_contents (&list, values, cnt);
 
-      for (i = 0; i < cnt; i++) 
+      for (i = 0; i < cnt; i++)
         {
           *new_elems[i] = *elems[i];
           ll_moved (&new_elems[i]->ll);
@@ -792,7 +790,7 @@ test_examine_equal_range (void (*helper) (int r0, int r1, int eq_pat,
   int cnt, r0, r1, eq_pat;
 
   for (cnt = 0; cnt <= max_elems; cnt++)
-    for (eq_pat = 0; eq_pat <= 1 << cnt; eq_pat++) 
+    for (eq_pat = 0; eq_pat <= 1 << cnt; eq_pat++)
       {
         struct ll_list list;
         struct element **elems;
@@ -831,7 +829,7 @@ test_examine_if_range (void (*helper) (int r0, int r1, int eq_pat,
   int cnt, r0, r1, eq_pat;
 
   for (cnt = 0; cnt <= max_elems; cnt++)
-    for (eq_pat = 0; eq_pat <= 1 << cnt; eq_pat++) 
+    for (eq_pat = 0; eq_pat <= 1 << cnt; eq_pat++)
       {
         struct ll_list list;
         struct element **elems;
@@ -864,12 +862,12 @@ test_find_equal_helper (int r0, int r1, int eq_pat,
     if (eq_pat & (1 << i))
       break;
 
-  check (match == elemp[i]); 
+  check (match == elemp[i]);
 }
 
 /* Tests ll_find_equal. */
 static void
-test_find_equal (void) 
+test_find_equal (void)
 {
   test_examine_equal_range (test_find_equal_helper);
 }
@@ -886,26 +884,26 @@ test_find_if_helper (int r0, int r1, int eq_pat, struct ll **elemp)
     if (eq_pat & (1 << i))
       break;
 
-  check (match == elemp[i]); 
+  check (match == elemp[i]);
 }
 
 /* Tests ll_find_if. */
 static void
-test_find_if (void) 
+test_find_if (void)
 {
   test_examine_if_range (test_find_if_helper);
 }
 
 /* Tests ll_find_adjacent_equal. */
 static void
-test_find_adjacent_equal (void) 
+test_find_adjacent_equal (void)
 {
   const int max_elems = 8;
 
   int cnt, eq_pat;
 
   for (cnt = 0; cnt <= max_elems; cnt++)
-    for (eq_pat = 0; eq_pat <= 1 << cnt; eq_pat++) 
+    for (eq_pat = 0; eq_pat <= 1 << cnt; eq_pat++)
       {
         struct ll_list list;
         struct element **elems;
@@ -918,10 +916,10 @@ test_find_adjacent_equal (void)
         allocate_ascending (cnt, &list, &elems, &elemp, &values);
 
         match = -1;
-        for (i = 0; i < cnt - 1; i++) 
+        for (i = 0; i < cnt - 1; i++)
           {
             elems[i]->y = i;
-            if (eq_pat & (1 << i)) 
+            if (eq_pat & (1 << i))
               {
                 values[i] = elems[i]->x = match;
                 values[i + 1] = elems[i + 1]->x = match;
@@ -929,7 +927,7 @@ test_find_adjacent_equal (void)
             else
               match--;
           }
-        
+
         for (i = 0; i <= cnt; i++)
           {
             struct ll *ll1 = ll_find_adjacent_equal (elemp[i], ll_null (&list),
@@ -940,7 +938,7 @@ test_find_adjacent_equal (void)
 
             ll2 = ll_null (&list);
             for (j = i; j < cnt - 1; j++)
-              if (eq_pat & (1 << j)) 
+              if (eq_pat & (1 << j))
                 {
                   ll2 = elemp[j];
                   break;
@@ -962,7 +960,7 @@ test_count_range_helper (int r0, int r1, int eq_pat UNUSED, struct ll **elemp)
 
 /* Tests ll_count_range. */
 static void
-test_count_range (void) 
+test_count_range (void)
 {
   test_examine_if_range (test_count_range_helper);
 }
@@ -981,20 +979,20 @@ test_count_equal_helper (int r0, int r1, int eq_pat,
   for (i = r0; i < r1; i++)
     if (eq_pat & (1 << i))
       count2++;
-              
-  check (count1 == count2); 
+
+  check (count1 == count2);
 }
 
 /* Tests ll_count_equal. */
 static void
-test_count_equal (void) 
+test_count_equal (void)
 {
   test_examine_equal_range (test_count_equal_helper);
 }
 
 /* Helper function for testing ll_count_if. */
 static void
-test_count_if_helper (int r0, int r1, int eq_pat, struct ll **elemp) 
+test_count_if_helper (int r0, int r1, int eq_pat, struct ll **elemp)
 {
   int count1;
   int count2;
@@ -1007,21 +1005,21 @@ test_count_if_helper (int r0, int r1, int eq_pat, struct ll **elemp)
     if (eq_pat & (1 << i))
       count2++;
 
-  check (count1 == count2); 
+  check (count1 == count2);
 }
 
 /* Tests ll_count_if. */
 static void
-test_count_if (void) 
+test_count_if (void)
 {
   test_examine_if_range (test_count_if_helper);
 }
 
 /* Returns N!. */
-static unsigned
-factorial (unsigned n) 
+static unsigned int
+factorial (unsigned int n)
 {
-  unsigned value = 1;
+  unsigned int value = 1;
   while (n > 1)
     value *= n--;
   return value;
@@ -1030,14 +1028,14 @@ factorial (unsigned n)
 /* Returns the number of permutations of the CNT values in
    VALUES.  If VALUES contains duplicates, they must be
    adjacent. */
-static unsigned
-expected_perms (int *values, size_t cnt) 
+static unsigned int
+expected_perms (int *values, size_t cnt)
 {
   size_t i, j;
-  unsigned perm_cnt;
-  
+  unsigned int perm_cnt;
+
   perm_cnt = factorial (cnt);
-  for (i = 0; i < cnt; i = j) 
+  for (i = 0; i < cnt; i = j)
     {
       for (j = i + 1; j < cnt; j++)
         if (values[i] != values[j])
@@ -1049,12 +1047,12 @@ expected_perms (int *values, size_t cnt)
 
 /* Tests ll_min and ll_max. */
 static void
-test_min_max (void) 
+test_min_max (void)
 {
   const int max_elems = 6;
   int cnt;
 
-  for (cnt = 0; cnt <= max_elems; cnt++) 
+  for (cnt = 0; cnt <= max_elems; cnt++)
     {
       struct ll_list list;
       struct element **elems;
@@ -1068,32 +1066,32 @@ test_min_max (void)
 
       perm_cnt = 1;
       while (ll_next_permutation (ll_head (&list), ll_null (&list),
-                                  compare_elements, &aux_data)) 
+                                  compare_elements, &aux_data))
         {
           int r0, r1;
           struct ll *x;
           int i;
-          
+
           for (i = 0, x = ll_head (&list); x != ll_null (&list);
-               x = ll_next (x), i++) 
+               x = ll_next (x), i++)
             {
               struct element *e = ll_to_element (x);
               elemp[i] = x;
               new_values[i] = e->x;
             }
           for (r0 = 0; r0 <= cnt; r0++)
-            for (r1 = r0; r1 <= cnt; r1++) 
+            for (r1 = r0; r1 <= cnt; r1++)
               {
                 struct ll *min = ll_min (elemp[r0], elemp[r1],
                                          compare_elements, &aux_data);
                 struct ll *max = ll_max (elemp[r0], elemp[r1],
                                          compare_elements, &aux_data);
-                if (r0 == r1) 
+                if (r0 == r1)
                   {
                     check (min == elemp[r1]);
-                    check (max == elemp[r1]); 
+                    check (max == elemp[r1]);
                   }
-                else 
+                else
                   {
                     int min_int, max_int;
                     int i;
@@ -1110,7 +1108,7 @@ test_min_max (void)
                     check (min != elemp[r1]
                            && ll_to_element (min)->x == min_int);
                     check (max != elemp[r1]
-                           && ll_to_element (max)->x == max_int); 
+                           && ll_to_element (max)->x == max_int);
                   }
               }
           perm_cnt++;
@@ -1125,7 +1123,7 @@ test_min_max (void)
 
 /* Tests ll_lexicographical_compare_3way. */
 static void
-test_lexicographical_compare_3way (void) 
+test_lexicographical_compare_3way (void)
 {
   const int max_elems = 4;
 
@@ -1134,7 +1132,7 @@ test_lexicographical_compare_3way (void)
   for (cnt_a = 0; cnt_a <= max_elems; cnt_a++)
     for (pat_a = 0; pat_a <= 1 << cnt_a; pat_a++)
       for (cnt_b = 0; cnt_b <= max_elems; cnt_b++)
-        for (pat_b = 0; pat_b <= 1 << cnt_b; pat_b++) 
+        for (pat_b = 0; pat_b <= 1 << cnt_b; pat_b++)
           {
             struct ll_list list_a, list_b;
             struct element **elems_a, **elems_b;
@@ -1165,7 +1163,7 @@ test_lexicographical_compare_3way (void)
                         compare_elements, &aux_data);
 
                       check (a_ordering == b_ordering);
-                    } 
+                    }
 
             free_elements (cnt_a, elems_a, elemp_a, values_a);
             free_elements (cnt_b, elems_b, elemp_b, values_b);
@@ -1175,24 +1173,24 @@ test_lexicographical_compare_3way (void)
 /* Appends the `x' value in element E to the array pointed to by
    NEXT_OUTPUT, and advances NEXT_OUTPUT to the next position. */
 static void
-apply_func (struct ll *e_, void *next_output_) 
+apply_func (struct ll *e_, void *next_output_)
 {
   struct element *e = ll_to_element (e_);
   int **next_output = next_output_;
-  
+
   *(*next_output)++ = e->x;
 }
 
 /* Tests ll_apply. */
 static void
-test_apply (void) 
+test_apply (void)
 {
   const int max_elems = 8;
 
   int cnt, r0, r1;
 
   for (cnt = 0; cnt <= max_elems; cnt++)
-    for (r0 = 0; r0 <= cnt; r0++) 
+    for (r0 = 0; r0 <= cnt; r0++)
       for (r1 = r0; r1 <= cnt; r1++)
         {
           struct ll_list list;
@@ -1223,14 +1221,14 @@ test_apply (void)
 
 /* Tests ll_reverse. */
 static void
-test_reverse (void) 
+test_reverse (void)
 {
   const int max_elems = 8;
 
   int cnt, r0, r1;
 
   for (cnt = 0; cnt <= max_elems; cnt++)
-    for (r0 = 0; r0 <= cnt; r0++) 
+    for (r0 = 0; r0 <= cnt; r0++)
       for (r1 = r0; r1 <= cnt; r1++)
         {
           struct ll_list list;
@@ -1261,12 +1259,12 @@ test_reverse (void)
 /* Tests ll_next_permutation and ll_prev_permutation when the
    permuted values have no duplicates. */
 static void
-test_permutations_no_dups (void) 
+test_permutations_no_dups (void)
 {
   const int max_elems = 8;
   int cnt;
 
-  for (cnt = 0; cnt <= max_elems; cnt++) 
+  for (cnt = 0; cnt <= max_elems; cnt++)
     {
       struct ll_list list;
       struct element **elems;
@@ -1281,7 +1279,7 @@ test_permutations_no_dups (void)
       perm_cnt = 1;
       extract_values (&list, old_values, cnt);
       while (ll_next_permutation (ll_head (&list), ll_null (&list),
-                                  compare_elements, &aux_data)) 
+                                  compare_elements, &aux_data))
         {
           extract_values (&list, new_values, cnt);
           check (lexicographical_compare_3way (new_values, cnt,
@@ -1298,7 +1296,7 @@ test_permutations_no_dups (void)
       ll_reverse (ll_head (&list), ll_null (&list));
       extract_values (&list, old_values, cnt);
       while (ll_prev_permutation (ll_head (&list), ll_null (&list),
-                                  compare_elements, &aux_data)) 
+                                  compare_elements, &aux_data))
         {
           extract_values (&list, new_values, cnt);
           check (lexicographical_compare_3way (new_values, cnt,
@@ -1321,7 +1319,7 @@ test_permutations_no_dups (void)
 /* Tests ll_next_permutation and ll_prev_permutation when the
    permuted values contain duplicates. */
 static void
-test_permutations_with_dups (void) 
+test_permutations_with_dups (void)
 {
   const int max_elems = 8;
   const int max_dup = 3;
@@ -1330,7 +1328,7 @@ test_permutations_with_dups (void)
   int cnt, repeat;
 
   for (repeat = 0; repeat < repetitions; repeat++)
-    for (cnt = 0; cnt < max_elems; cnt++) 
+    for (cnt = 0; cnt < max_elems; cnt++)
       {
         struct ll_list list;
         struct element **elems;
@@ -1338,10 +1336,10 @@ test_permutations_with_dups (void)
         int *old_values = xnmalloc (max_elems, sizeof *values);
         int *new_values = xnmalloc (max_elems, sizeof *values);
 
-        unsigned permutation_cnt;
+        unsigned int permutation_cnt;
         int left = cnt;
         int value = 0;
-      
+
         allocate_elements (cnt, &list, &elems, NULL, &values);
 
         value = 0;
@@ -1360,7 +1358,7 @@ test_permutations_with_dups (void)
         permutation_cnt = 1;
         extract_values (&list, old_values, cnt);
         while (ll_next_permutation (ll_head (&list), ll_null (&list),
-                                    compare_elements, &aux_data)) 
+                                    compare_elements, &aux_data))
           {
             extract_values (&list, new_values, cnt);
             check (lexicographical_compare_3way (new_values, cnt,
@@ -1377,7 +1375,7 @@ test_permutations_with_dups (void)
         ll_reverse (ll_head (&list), ll_null (&list));
         extract_values (&list, old_values, cnt);
         while (ll_prev_permutation (ll_head (&list), ll_null (&list),
-                                    compare_elements, &aux_data)) 
+                                    compare_elements, &aux_data))
           {
             extract_values (&list, new_values, cnt);
             check (lexicographical_compare_3way (new_values, cnt,
@@ -1398,13 +1396,13 @@ test_permutations_with_dups (void)
 
 /* Tests ll_merge when no equal values are to be merged. */
 static void
-test_merge_no_dups (void) 
+test_merge_no_dups (void)
 {
   const int max_elems = 8;
   const int max_filler = 3;
 
   int merge_cnt, pattern, pfx, gap, sfx, order;
-  
+
   for (merge_cnt = 0; merge_cnt < max_elems; merge_cnt++)
     for (pattern = 0; pattern <= (1 << merge_cnt); pattern++)
       for (pfx = 0; pfx < max_filler; pfx++)
@@ -1473,12 +1471,12 @@ test_merge_no_dups (void)
 
 /* Tests ll_merge when equal values are to be merged. */
 static void
-test_merge_with_dups (void) 
+test_merge_with_dups (void)
 {
   const int max_elems = 8;
 
   int cnt, merge_pat, inc_pat, order;
-  
+
   for (cnt = 0; cnt <= max_elems; cnt++)
     for (merge_pat = 0; merge_pat <= (1 << cnt); merge_pat++)
       for (inc_pat = 0; inc_pat <= (1 << cnt); inc_pat++)
@@ -1495,9 +1493,9 @@ test_merge_with_dups (void)
             allocate_elements (cnt, &list, &elems, &elemp, &values);
 
             j = 0;
-            for (i = k = 0; i < cnt; i++) 
+            for (i = k = 0; i < cnt; i++)
               {
-                if (merge_pat & (1u << i)) 
+                if (merge_pat & (1u << i))
                   elems[j++]->x = k;
                 if (inc_pat & (1u << i))
                   k++;
@@ -1505,19 +1503,19 @@ test_merge_with_dups (void)
             mid = j;
             for (i = k = 0; i < cnt; i++)
               {
-                if (!(merge_pat & (1u << i))) 
+                if (!(merge_pat & (1u << i)))
                   elems[j++]->x = k;
                 if (inc_pat & (1u << i))
                   k++;
               }
             check (cnt == j);
 
-            if (order == 0) 
+            if (order == 0)
               {
                 for (i = 0; i < cnt; i++)
-                  elems[i]->y = i; 
+                  elems[i]->y = i;
               }
-            else 
+            else
               {
                 for (i = 0; i < mid; i++)
                   elems[i]->y = 100 + i;
@@ -1526,11 +1524,11 @@ test_merge_with_dups (void)
               }
 
             j = 0;
-            for (i = k = 0; i < cnt; i++) 
+            for (i = k = 0; i < cnt; i++)
               {
                 values[j++] = k;
                 if (inc_pat & (1u << i))
-                  k++; 
+                  k++;
               }
             check (cnt == j);
 
@@ -1552,12 +1550,12 @@ test_merge_with_dups (void)
 /* Tests ll_sort on all permutations up to a maximum number of
    elements. */
 static void
-test_sort_exhaustive (void) 
+test_sort_exhaustive (void)
 {
   const int max_elems = 8;
   int cnt;
 
-  for (cnt = 0; cnt <= max_elems; cnt++) 
+  for (cnt = 0; cnt <= max_elems; cnt++)
     {
       struct ll_list list;
       struct element **elems;
@@ -1573,7 +1571,7 @@ test_sort_exhaustive (void)
 
       perm_cnt = 1;
       while (ll_next_permutation (ll_head (&list), ll_null (&list),
-                                  compare_elements, &aux_data)) 
+                                  compare_elements, &aux_data))
         {
           struct ll_list perm_list;
           int j;
@@ -1581,7 +1579,7 @@ test_sort_exhaustive (void)
           extract_values (&list, perm_values, cnt);
           ll_init (&perm_list);
           for (j = 0; j < cnt; j++)
-            { 
+            {
               perm_elems[j]->x = perm_values[j];
               ll_push_tail (&perm_list, &perm_elems[j]->ll);
             }
@@ -1590,7 +1588,7 @@ test_sort_exhaustive (void)
           check_list_contents (&perm_list, values, cnt);
           check (ll_is_sorted (ll_head (&perm_list), ll_null (&perm_list),
                                compare_elements, &aux_data));
-          perm_cnt++; 
+          perm_cnt++;
         }
       check (perm_cnt == factorial (cnt));
 
@@ -1602,7 +1600,7 @@ test_sort_exhaustive (void)
 /* Tests that ll_sort is stable in the presence of equal
    values. */
 static void
-test_sort_stable (void) 
+test_sort_stable (void)
 {
   const int max_elems = 6;
   int cnt, inc_pat;
@@ -1624,7 +1622,7 @@ test_sort_stable (void)
         allocate_elements (cnt, NULL, &perm_elems, NULL, &perm_values);
 
         j = 0;
-        for (i = 0; i < cnt; i++) 
+        for (i = 0; i < cnt; i++)
           {
             elems[i]->x = values[i] = j;
             if (inc_pat & (1 << i))
@@ -1634,14 +1632,14 @@ test_sort_stable (void)
 
         perm_cnt = 1;
         while (ll_next_permutation (ll_head (&list), ll_null (&list),
-                                    compare_elements_y, &aux_data)) 
+                                    compare_elements_y, &aux_data))
           {
             struct ll_list perm_list;
 
             extract_values (&list, perm_values, cnt);
             ll_init (&perm_list);
             for (i = 0; i < cnt; i++)
-              { 
+              {
                 perm_elems[i]->x = perm_values[i];
                 perm_elems[i]->y = i;
                 ll_push_tail (&perm_list, &perm_elems[i]->ll);
@@ -1651,7 +1649,7 @@ test_sort_stable (void)
             check_list_contents (&perm_list, values, cnt);
             check (ll_is_sorted (ll_head (&perm_list), ll_null (&perm_list),
                                  compare_elements_x_y, &aux_data));
-            perm_cnt++; 
+            perm_cnt++;
           }
         check (perm_cnt == factorial (cnt));
 
@@ -1671,7 +1669,7 @@ test_sort_subset (void)
 
   for (cnt = 0; cnt <= max_elems; cnt++)
     for (repeat = 0; repeat < 100; repeat++)
-      for (r0 = 0; r0 <= cnt; r0++) 
+      for (r0 = 0; r0 <= cnt; r0++)
         for (r1 = r0; r1 <= cnt; r1++)
           {
             struct ll_list list;
@@ -1715,7 +1713,7 @@ test_sort_big (void)
 
 /* Tests ll_unique. */
 static void
-test_unique (void) 
+test_unique (void)
 {
   const int max_elems = 10;
 
@@ -1736,7 +1734,7 @@ test_unique (void)
         allocate_elements (cnt, &list, &elems, NULL, &values);
 
         j = unique_values = 0;
-        for (i = 0; i < cnt; i++) 
+        for (i = 0; i < cnt; i++)
           {
             unique_values = j + 1;
             elems[i]->x = values[i] = j;
@@ -1763,7 +1761,7 @@ test_unique (void)
 
 /* Tests ll_sort_unique. */
 static void
-test_sort_unique (void) 
+test_sort_unique (void)
 {
   const int max_elems = 7;
   int cnt, inc_pat;
@@ -1788,7 +1786,7 @@ test_sort_unique (void)
         allocate_elements (cnt, NULL, &perm_elems, NULL, &perm_values);
 
         j = unique_cnt = 0;
-        for (i = 0; i < cnt; i++) 
+        for (i = 0; i < cnt; i++)
           {
             elems[i]->x = values[i] = j;
             unique_cnt = j + 1;
@@ -1802,14 +1800,14 @@ test_sort_unique (void)
 
         perm_cnt = 1;
         while (ll_next_permutation (ll_head (&list), ll_null (&list),
-                                    compare_elements, &aux_data)) 
+                                    compare_elements, &aux_data))
           {
             struct ll_list perm_list;
 
             extract_values (&list, perm_values, cnt);
             ll_init (&perm_list);
             for (i = 0; i < cnt; i++)
-              { 
+              {
                 perm_elems[i]->x = perm_values[i];
                 perm_elems[i]->y = i;
                 ll_push_tail (&perm_list, &perm_elems[i]->ll);
@@ -1819,7 +1817,7 @@ test_sort_unique (void)
             check_list_contents (&perm_list, unique_values, unique_cnt);
             check (ll_is_sorted (ll_head (&perm_list), ll_null (&perm_list),
                                  compare_elements_x_y, &aux_data));
-            perm_cnt++; 
+            perm_cnt++;
           }
         check (perm_cnt == expected_perms (values, cnt));
 
@@ -1831,7 +1829,7 @@ test_sort_unique (void)
 
 /* Tests ll_insert_ordered. */
 static void
-test_insert_ordered (void) 
+test_insert_ordered (void)
 {
   const int max_elems = 6;
   int cnt, inc_pat;
@@ -1853,7 +1851,7 @@ test_insert_ordered (void)
         allocate_elements (cnt, NULL, &perm_elems, NULL, &perm_values);
 
         j = 0;
-        for (i = 0; i < cnt; i++) 
+        for (i = 0; i < cnt; i++)
           {
             elems[i]->x = values[i] = j;
             if (inc_pat & (1 << i))
@@ -1863,14 +1861,14 @@ test_insert_ordered (void)
 
         perm_cnt = 1;
         while (ll_next_permutation (ll_head (&list), ll_null (&list),
-                                    compare_elements_y, &aux_data)) 
+                                    compare_elements_y, &aux_data))
           {
             struct ll_list perm_list;
 
             extract_values (&list, perm_values, cnt);
             ll_init (&perm_list);
             for (i = 0; i < cnt; i++)
-              { 
+              {
                 perm_elems[i]->x = perm_values[i];
                 perm_elems[i]->y = i;
                 ll_insert_ordered (ll_head (&perm_list), ll_null (&perm_list),
@@ -1879,7 +1877,7 @@ test_insert_ordered (void)
               }
             check (ll_is_sorted (ll_head (&perm_list), ll_null (&perm_list),
                                  compare_elements_x_y, &aux_data));
-            perm_cnt++; 
+            perm_cnt++;
           }
         check (perm_cnt == factorial (cnt));
 
@@ -1893,9 +1891,9 @@ static void
 test_partition (void)
 {
   const int max_elems = 10;
-  
+
   int cnt;
-  unsigned pbase;
+  unsigned int pbase;
   int r0, r1;
 
   for (cnt = 0; cnt < max_elems; cnt++)
@@ -1908,11 +1906,11 @@ test_partition (void)
             struct ll **elemp;
             int *values;
 
-            unsigned pattern = pbase << r0;
+            unsigned int pattern = pbase << r0;
             int i, j;
             int first_false;
             struct ll *part_ll;
-         
+
             allocate_ascending (cnt, &list, &elems, &elemp, &values);
 
             /* Check that ll_find_partition works okay in every
@@ -1923,12 +1921,12 @@ test_partition (void)
                 break;
             j = i;
             for (; i < r1; i++)
-              if (pattern & (1u << i)) 
+              if (pattern & (1u << i))
                 break;
             part_ll = ll_find_partition (elemp[r0], elemp[r1],
                                          pattern_pred,
                                          &pattern);
-            if (i == r1) 
+            if (i == r1)
               check (part_ll == elemp[j]);
             else
               check (part_ll == NULL);
@@ -1946,7 +1944,7 @@ test_partition (void)
                 {
                   if (first_false == -1)
                     first_false = i;
-                  values[j++] = i; 
+                  values[j++] = i;
                 }
             if (first_false == -1)
               first_false = r1;
@@ -1970,56 +1968,199 @@ test_partition (void)
 
 /* Main program. */
 
-/* Runs TEST_FUNCTION and prints a message about NAME. */
-static void
-run_test (void (*test_function) (void), const char *name) 
-{
-  test_name = name;
-  putchar ('.');
-  fflush (stdout);
-  test_function ();
-}
+struct test
+  {
+    const char *name;
+    const char *description;
+    void (*function) (void);
+  };
+
+static const struct test tests[] =
+  {
+    {
+      "push-pop",
+      "push/pop",
+      test_push_pop
+    },
+    {
+      "insert-remove",
+      "insert/remove",
+      test_insert_remove
+    },
+    {
+      "swap",
+      "swap",
+      test_swap
+    },
+    {
+      "swap-range",
+      "swap_range",
+      test_swap_range
+    },
+    {
+      "remove-range",
+      "remove_range",
+      test_remove_range
+    },
+    {
+      "remove-equal",
+      "remove_equal",
+      test_remove_equal
+    },
+    {
+      "remove-if",
+      "remove_if",
+      test_remove_if
+    },
+    {
+      "moved",
+      "moved",
+      test_moved
+    },
+    {
+      "find-equal",
+      "find_equal",
+      test_find_equal
+    },
+    {
+      "find-if",
+      "find_if",
+      test_find_if
+    },
+    {
+      "find-adjacent-equal",
+      "find_adjacent_equal",
+      test_find_adjacent_equal
+    },
+    {
+      "count-range",
+      "count_range",
+      test_count_range
+    },
+    {
+      "count-equal",
+      "count_equal",
+      test_count_equal
+    },
+    {
+      "count-if",
+      "count_if",
+      test_count_if
+    },
+    {
+      "min-max",
+      "min/max",
+      test_min_max
+    },
+    {
+      "lexicographical-compare-3way",
+      "lexicographical_compare_3way",
+      test_lexicographical_compare_3way
+    },
+    {
+      "apply",
+      "apply",
+      test_apply
+    },
+    {
+      "reverse",
+      "reverse",
+      test_reverse
+    },
+    {
+      "permutations-no-dups",
+      "permutations (no dups)",
+      test_permutations_no_dups
+    },
+    {
+      "permutations-with-dups",
+      "permutations (with dups)",
+      test_permutations_with_dups
+    },
+    {
+      "merge-no-dups",
+      "merge (no dups)",
+      test_merge_no_dups
+    },
+    {
+      "merge-with-dups",
+      "merge (with dups)",
+      test_merge_with_dups
+    },
+    {
+      "sort-exhaustive",
+      "sort (exhaustive)",
+      test_sort_exhaustive
+    },
+    {
+      "sort-stable",
+      "sort (stability)",
+      test_sort_stable
+    },
+    {
+      "sort-subset",
+      "sort (subset)",
+      test_sort_subset
+    },
+    {
+      "sort-big",
+      "sort (big)",
+      test_sort_big
+    },
+    {
+      "unique",
+      "unique",
+      test_unique
+    },
+    {
+      "sort-unique",
+      "sort_unique",
+      test_sort_unique
+    },
+    {
+      "insert-ordered",
+      "insert_ordered",
+      test_insert_ordered
+    },
+    {
+      "partition",
+      "partition",
+      test_partition
+    },
+  };
+
+enum { N_TESTS = sizeof tests / sizeof *tests };
 
 int
-main (void) 
-{
-  run_test (test_push_pop, "push/pop");
-  run_test (test_insert_remove, "insert/remove");
-  run_test (test_swap, "swap");
-  run_test (test_swap_range, "swap_range");
-  run_test (test_remove_range, "remove_range");
-  run_test (test_remove_equal, "remove_equal");
-  run_test (test_remove_if, "remove_if");
-  run_test (test_moved, "moved");
-  run_test (test_find_equal, "find_equal");
-  run_test (test_find_if, "find_if");
-  run_test (test_find_adjacent_equal, "find_adjacent_equal");
-  run_test (test_count_range, "count_range");
-  run_test (test_count_equal, "count_equal");
-  run_test (test_count_if, "count_if");
-  run_test (test_min_max, "min/max");
-  run_test (test_lexicographical_compare_3way, "lexicographical_compare_3way");
-  run_test (test_apply, "apply");
-  run_test (test_reverse, "reverse");
-  run_test (test_permutations_no_dups, "permutations (no dups)");
-  run_test (test_permutations_with_dups, "permutations (with dups)");
-  run_test (test_merge_no_dups, "merge (no dups)");
-  run_test (test_merge_with_dups, "merge (with dups)");
-  run_test (test_sort_exhaustive, "sort (exhaustive)");
-  run_test (test_sort_stable, "sort (stability)");
-  run_test (test_sort_subset, "sort (subset)");
-  run_test (test_sort_big, "sort (big)");
-  run_test (test_unique, "unique");
-  run_test (test_sort_unique, "sort_unique");
-  run_test (test_insert_ordered, "insert_ordered");
-  run_test (test_partition, "partition");
-  putchar ('\n');
-
-  return 0;
-}
-
-/*
-  Local Variables:
-  compile-command: "gcc -Wall -Wstrict-prototypes -Wmissing-prototypes ll.c ll-test.c -o ll-test -g"
-  End:
- */
+main (int argc, char *argv[])
+{
+  int i;
+
+  if (argc != 2)
+    {
+      fprintf (stderr, "exactly one argument required; use --help for help\n");
+      return EXIT_FAILURE;
+    }
+  else if (!strcmp (argv[1], "--help"))
+    {
+      printf ("%s: test doubly linked list (ll) library\n"
+              "usage: %s TEST-NAME\n"
+              "where TEST-NAME is one of the following:\n",
+              argv[0], argv[0]);
+      for (i = 0; i < N_TESTS; i++)
+        printf ("  %s\n    %s\n", tests[i].name, tests[i].description);
+      return 0;
+    }
+  else
+    {
+      for (i = 0; i < N_TESTS; i++)
+        if (!strcmp (argv[1], tests[i].name))
+          {
+            tests[i].function ();
+            return 0;
+          }
+
+      fprintf (stderr, "unknown test %s; use --help for help\n", argv[1]);
+      return EXIT_FAILURE;
+    }
+}