degesch: add a unit test for message wrapping algo

1 files changed, 36 insertions, 0 deletions

diff --git a/degesch.c b/degesch.c
index 14e2c40..2977e09 100644
--- a/degesch.c
+++ b/degesch.c
@@ -11197,6 +11197,42 @@ init_poller_events (struct app_context *ctx)
 	ctx->autoaway_tmr.user_data = ctx;
 }
 
+// --- Tests -------------------------------------------------------------------
+
+// The application is quite monolithic and can only be partially unit-tested
+
+#ifdef TESTING
+
+static void
+test_wrapping (void)
+{
+	struct str_vector v;
+	str_vector_init (&v);
+
+	static const char *message = " foo bar foobar fóóbárbáz";
+	static const char *split[] =
+		{ " foo", "bar", "foob", "ar", "fó", "ób", "árb", "áz" };
+
+	hard_assert (wrap_message (message, 4, &v, NULL));
+	hard_assert (v.len == N_ELEMENTS (split));
+	for (size_t i = 0; i < N_ELEMENTS (split); i++)
+		hard_assert (!strcmp (v.vector[i], split[i]));
+
+	str_vector_free (&v);
+}
+
+int
+main (int argc, char *argv[])
+{
+	struct test test;
+	test_init (&test, argc, argv);
+	test_add_simple (&test, "/wrapping", NULL, test_wrapping);
+	return test_run (&test);
+}
+
+#define main main_shadowed
+#endif // TESTING
+
 // --- Main program ------------------------------------------------------------
 
 static const char *g_logo[] =