1 files changed, 68 insertions, 0 deletions
diff --git a/ccan/tal/test/run-destructor.c b/ccan/tal/test/run-destructor.c
new file mode 100644
index 0000000..7183f7c
--- /dev/null
+++ b/ccan/tal/test/run-destructor.c
@@ -0,0 +1,68 @@
+#include <ccan/tal/tal.h>
+#include <ccan/tal/tal.c>
+#include <ccan/tap/tap.h>
+
+static char *parent, *child;
+static int destroy_count;
+
+/* Parent gets destroyed first. */
+static void destroy_parent(char *p)
+{
+	ok1(p == parent);
+	ok1(destroy_count == 0);
+	/* Can still access child. */
+	*child = '1';
+	destroy_count++;
+}
+
+static void destroy_child(char *p)
+{
+	ok1(p == child);
+	ok1(destroy_count == 1);
+	/* Can still access parent (though destructor has been called). */
+	*parent = '1';
+	destroy_count++;
+}
+
+static void destroy_inc(char *p UNNEEDED)
+{
+	destroy_count++;
+}
+
+int main(void)
+{
+	char *child2;
+
+	plan_tests(18);
+
+	destroy_count = 0;
+	parent = tal(NULL, char);
+	child = tal(parent, char);
+	ok1(tal_add_destructor(parent, destroy_parent));
+	ok1(tal_add_destructor(child, destroy_child));
+	tal_free(parent);
+	ok1(destroy_count == 2);
+
+	destroy_count = 0;
+	parent = tal(NULL, char);
+	child = tal(parent, char);
+	ok1(tal_add_destructor(parent, destroy_parent));
+	ok1(tal_add_destructor(child, destroy_child));
+	ok1(tal_del_destructor(child, destroy_child));
+	tal_free(parent);
+	ok1(destroy_count == 1);
+
+	destroy_count = 0;
+	parent = tal(NULL, char);
+	child = tal(parent, char);
+	child2 = tal(parent, char);
+	ok1(tal_add_destructor(parent, destroy_inc));
+	ok1(tal_add_destructor(parent, destroy_inc));
+	ok1(tal_add_destructor(child, destroy_inc));
+	ok1(tal_add_destructor(child2, destroy_inc));
+	tal_free(parent);
+	ok1(destroy_count == 4);
+
+	tal_cleanup();
+	return exit_status();
+}