glib-aux/tests: add nmtst_true_once() helper

1 files changed, 22 insertions, 0 deletions

diff --git a/src/libnm-glib-aux/nm-test-utils.h b/src/libnm-glib-aux/nm-test-utils.h
index 144b3a85b7..f3e558dfe0 100644
--- a/src/libnm-glib-aux/nm-test-utils.h
+++ b/src/libnm-glib-aux/nm-test-utils.h
@@ -1192,6 +1192,28 @@ nmtst_get_rand_word_length(GRand *rand)
 /*****************************************************************************/
 
 static inline gboolean
+nmtst_true_once(gboolean *state, gboolean new_val)
+{
+    /* Returns only once a TRUE flag. When returning TRUE,
+     * it will be remembered in "state" and future invocations
+     * return FALSE.
+     *
+     * Also, if "new_val" is FALSE, it won't return TRUE.
+     *
+     * The point is to do an action once (depending on "new_val"),
+     * and remember it in "state".
+     */
+    if (!new_val)
+        return FALSE;
+    if (*state)
+        return FALSE;
+    *state = TRUE;
+    return TRUE;
+}
+
+/*****************************************************************************/
+
+static inline gboolean
 nmtst_g_source_assert_not_called(gpointer user_data)
 {
     g_assert_not_reached();