gqsort: Move test to glib/tests/

Previously tests existed in two places,
`$top_srcdir/tests/qsort-test.c` contained a similar test
to the one in `$top_srcdir/glib/tests/sort.c` called `test_sort_basic()`

The test for checking with zero elements was additional added to
`$top_srcdir/glib/tests/sort.c` and `$top_srcdir/tests/qsort-test.c`
was deleted.

Related to: #1434

glib/tests/sort.c

@@ -46,6 +46,30 @@ test_sort_basic (void)
   g_free (data);
 }
 
+static void
+test_sort_zero_elements (void)
+{
+  gint *data, *data_copy;
+  gsize i;
+
+  data = g_malloc (100 * sizeof (int));
+  data_copy = g_malloc (100 * sizeof (int));
+  for (i = 0; i < 100; i++)
+    {
+      data[i] = g_random_int ();
+      data_copy[i] = data[i];
+    }
+
+  /* 0 elements is a valid case */
+  g_qsort_with_data (data, 0, sizeof (int), int_compare_data, NULL);
+
+  for (i = 0; i < 100; i++)
+    g_assert_cmpint (data[i], ==, data_copy[i]);
+
+  g_free (data);
+  g_free (data_copy);
+}
+
 typedef struct {
   int val;
   int i;
@@ -120,6 +144,7 @@ main (int argc, char *argv[])
   g_test_init (&argc, &argv, NULL);
 
   g_test_add_func ("/sort/basic", test_sort_basic);
+  g_test_add_func ("/sort/zero-elements", test_sort_zero_elements);
   g_test_add_func ("/sort/stable", test_sort_stable);
   g_test_add_func ("/sort/big", test_sort_big);
 

tests/meson.build

@@ -30,7 +30,6 @@ tests = {
   'mapping-test' : {},
   'onceinit' : {},
   'asyncqueue-test' : {},
-  'qsort-test' : {},
   'relation-test' : {},
   'slice-concurrent' : {},
   'slice-threadinit' : {

tests/qsort-test.c

@@ -1,33 +0,0 @@
-#undef G_DISABLE_ASSERT
-#undef G_LOG_DOMAIN
-
-#include <glib.h>
-
-#define SIZE 100000
-
-guint32 array[SIZE];
-
-static gint
-sort (gconstpointer a, gconstpointer b, gpointer user_data)
-{
-  return *(guint32*)a < *(guint32*)b ? -1 : 1;
-}
-
-int
-main (int argc, char **argv)
-{
-  int i;
-
-  for (i = 0; i < SIZE; i++)
-    array[i] = g_random_int ();
-
-  g_qsort_with_data (array, SIZE, sizeof (guint32), sort, NULL);
-
-  for (i = 0; i < SIZE - 1; i++)
-    g_assert (array[i] <= array[i+1]);
-
-  /* 0 elements is a valid case */
-  g_qsort_with_data (array, 0, sizeof (guint32), sort, NULL);
-
-  return 0;
-}