Issue: #5027

Add unit tests for modifier-aware key name generation in learn module.

- add tests/src/learn_modifiers.c
- cover none/single/combined modifier combinations
- register learn_modifiers test in tests/src/Makefile.am

Author: ilia-maslakov

tests/src/Makefile.am

@@ -32,6 +32,7 @@ TESTS = \
 	execute__execute_external_editor_or_viewer \
 	execute__execute_get_external_cmd_opts_from_config \
 	file_history \
+	learn_modifiers \
 	usermenu__test_condition \
 	usermenu__test_expand_format
 
@@ -51,6 +52,9 @@ execute__execute_get_external_cmd_opts_from_config_SOURCES = \
 file_history_SOURCES = \
 	file_history.c
 
+learn_modifiers_SOURCES = \
+	learn_modifiers.c
+
 usermenu__test_condition_SOURCES = \
 	usermenu__test_condition.c
 

tests/src/learn_modifiers.c

@@ -0,0 +1,77 @@
+/*
+   src/learn - tests for modifier-aware key names
+
+   Copyright (C) 2026
+   Free Software Foundation, Inc.
+*/
+
+#define TEST_SUITE_NAME "/src/learn"
+
+#include "tests/mctest.h"
+
+#include "lib/tty/key.h"
+
+#include "src/learn.c"
+
+/* --------------------------------------------------------------------------------------------- */
+
+START_TEST (test_learn_build_key_name_without_modifiers)
+{
+    char *name;
+
+    name = learn_build_key_name ("up", 0);
+    mctest_assert_str_eq (name, "up");
+    g_free (name);
+}
+END_TEST
+
+/* --------------------------------------------------------------------------------------------- */
+
+START_TEST (test_learn_build_key_name_single_modifiers)
+{
+    char *name;
+
+    name = learn_build_key_name ("f9", KEY_M_CTRL);
+    mctest_assert_str_eq (name, "ctrl-f9");
+    g_free (name);
+
+    name = learn_build_key_name ("right", KEY_M_ALT);
+    mctest_assert_str_eq (name, "meta-right");
+    g_free (name);
+
+    name = learn_build_key_name ("left", KEY_M_SHIFT);
+    mctest_assert_str_eq (name, "shift-left");
+    g_free (name);
+}
+END_TEST
+
+/* --------------------------------------------------------------------------------------------- */
+
+START_TEST (test_learn_build_key_name_combined_modifiers)
+{
+    char *name;
+
+    name = learn_build_key_name ("up", KEY_M_CTRL | KEY_M_SHIFT);
+    mctest_assert_str_eq (name, "ctrl-shift-up");
+    g_free (name);
+
+    name = learn_build_key_name ("pgdn", KEY_M_CTRL | KEY_M_ALT | KEY_M_SHIFT);
+    mctest_assert_str_eq (name, "ctrl-meta-shift-pgdn");
+    g_free (name);
+}
+END_TEST
+
+/* --------------------------------------------------------------------------------------------- */
+
+int
+main (void)
+{
+    TCase *tc_core;
+
+    tc_core = tcase_create ("Core");
+    tcase_add_test (tc_core, test_learn_build_key_name_without_modifiers);
+    tcase_add_test (tc_core, test_learn_build_key_name_single_modifiers);
+    tcase_add_test (tc_core, test_learn_build_key_name_combined_modifiers);
+
+    return mctest_run_all (tc_core);
+}