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tests: Add unit tests for g_queue_push_nth_link()

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This should get its branch coverage up to 100%. For completeness’ sake.

Signed-off-by: Philip Withnall <withnall@endlessm.com>
This commit is contained in:
Philip Withnall 2019-04-30 10:37:37 +01:00
parent f033948998
commit 4f38620b13
1 changed files with 89 additions and 0 deletions
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89
glib/tests/queue.c
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@ -1125,6 +1125,94 @@ test_clear_full_noop (void)
g_queue_free (queue);
}
/* Test g_queue_push_nth_link() with various combinations of position (before,
* in the middle of, or at the end of the queue) and various existing queues
* (empty, single element, multiple elements). */
static void
test_push_nth_link (void)
{
GQueue *q;
q = g_queue_new ();
/* Push onto before the front of an empty queue (which results in it being
* added to the end of the queue). */
g_queue_push_nth_link (q, -1, g_list_prepend (NULL, GINT_TO_POINTER (1)));
check_integrity (q);
g_assert_cmpint (g_queue_get_length (q), ==, 1);
g_assert_cmpint (GPOINTER_TO_INT (g_queue_peek_nth (q, 0)), ==, 1);
g_queue_clear (q);
/* Push onto after the rear of an empty queue. */
g_queue_push_nth_link (q, 100, g_list_prepend (NULL, GINT_TO_POINTER (2)));
check_integrity (q);
g_assert_cmpint (g_queue_get_length (q), ==, 1);
g_assert_cmpint (GPOINTER_TO_INT (g_queue_peek_nth (q, 0)), ==, 2);
g_queue_clear (q);
/* Push onto the front of an empty queue. */
g_queue_push_nth_link (q, 0, g_list_prepend (NULL, GINT_TO_POINTER (3)));
check_integrity (q);
g_assert_cmpint (g_queue_get_length (q), ==, 1);
g_assert_cmpint (GPOINTER_TO_INT (g_queue_peek_nth (q, 0)), ==, 3);
g_queue_clear (q);
/* Push onto before the front of a non-empty queue (which results in it being
* added to the end of the queue). */
g_queue_push_head (q, GINT_TO_POINTER (4));
g_queue_push_nth_link (q, -1, g_list_prepend (NULL, GINT_TO_POINTER (5)));
check_integrity (q);
g_assert_cmpint (g_queue_get_length (q), ==, 2);
g_assert_cmpint (GPOINTER_TO_INT (g_queue_peek_nth (q, 0)), ==, 4);
g_assert_cmpint (GPOINTER_TO_INT (g_queue_peek_nth (q, 1)), ==, 5);
g_queue_clear (q);
/* Push onto after the rear of a non-empty queue. */
g_queue_push_head (q, GINT_TO_POINTER (6));
g_queue_push_nth_link (q, 100, g_list_prepend (NULL, GINT_TO_POINTER (7)));
check_integrity (q);
g_assert_cmpint (g_queue_get_length (q), ==, 2);
g_assert_cmpint (GPOINTER_TO_INT (g_queue_peek_nth (q, 0)), ==, 6);
g_assert_cmpint (GPOINTER_TO_INT (g_queue_peek_nth (q, 1)), ==, 7);
g_queue_clear (q);
/* Push onto the rear of a non-empty queue. */
g_queue_push_head (q, GINT_TO_POINTER (8));
g_queue_push_nth_link (q, 1, g_list_prepend (NULL, GINT_TO_POINTER (9)));
check_integrity (q);
g_assert_cmpint (g_queue_get_length (q), ==, 2);
g_assert_cmpint (GPOINTER_TO_INT (g_queue_peek_nth (q, 0)), ==, 8);
g_assert_cmpint (GPOINTER_TO_INT (g_queue_peek_nth (q, 1)), ==, 9);
g_queue_clear (q);
/* Push onto the front of a non-empty queue. */
g_queue_push_head (q, GINT_TO_POINTER (10));
g_queue_push_nth_link (q, 0, g_list_prepend (NULL, GINT_TO_POINTER (11)));
check_integrity (q);
g_assert_cmpint (g_queue_get_length (q), ==, 2);
g_assert_cmpint (GPOINTER_TO_INT (g_queue_peek_nth (q, 0)), ==, 11);
g_assert_cmpint (GPOINTER_TO_INT (g_queue_peek_nth (q, 1)), ==, 10);
g_queue_clear (q);
/* Push into the middle of a non-empty queue. */
g_queue_push_head (q, GINT_TO_POINTER (12));
g_queue_push_head (q, GINT_TO_POINTER (13));
g_queue_push_nth_link (q, 1, g_list_prepend (NULL, GINT_TO_POINTER (14)));
check_integrity (q);
g_assert_cmpint (g_queue_get_length (q), ==, 3);
g_assert_cmpint (GPOINTER_TO_INT (g_queue_peek_nth (q, 0)), ==, 13);
g_assert_cmpint (GPOINTER_TO_INT (g_queue_peek_nth (q, 1)), ==, 14);
g_assert_cmpint (GPOINTER_TO_INT (g_queue_peek_nth (q, 2)), ==, 12);
g_queue_free (q);
}
static void
test_free_full (void)
{
@ -1199,6 +1287,7 @@ int main (int argc, char *argv[])
g_test_add_func ("/queue/clear-full", test_clear_full);
g_test_add_func ("/queue/clear-full/noop", test_clear_full_noop);
g_test_add_func ("/queue/insert-sibling-link", test_insert_sibling_link);
g_test_add_func ("/queue/push-nth-link", test_push_nth_link);
seed = g_test_rand_int_range (0, G_MAXINT);
path = g_strdup_printf ("/queue/random/seed:%u", seed);