feat: add WiFi setup state machine + config_add_wifi with unit tests

2 files changed, 125 insertions, 1 deletions

diff --git a/tests/unit/Makefile b/tests/unit/Makefile
index b978891..0faf47e 100644
--- a/tests/unit/Makefile
+++ b/tests/unit/Makefile
@@ -22,7 +22,7 @@ LDFLAGS := -lmbedcrypto -lcjson -lm
 
 SECP256K1_OBJ := secp256k1.o precomputed_ecmult.o precomputed_ecmult_gen.o
 
-TESTS := test_geohash test_identity test_nostr_event test_cashu test_session test_tollgate_client test_lnurl_pay test_lightning_payout test_mcp_handler test_nip04 test_cvm_server test_touch test_keyboard
+TESTS := test_geohash test_identity test_nostr_event test_cashu test_session test_tollgate_client test_lnurl_pay test_lightning_payout test_mcp_handler test_nip04 test_cvm_server test_touch test_keyboard test_wifi_setup
 
 .PHONY: all test clean $(TESTS)
 
@@ -87,5 +87,8 @@ test_touch: test_touch.c $(REPO_ROOT)/main/touch.c
 test_keyboard: test_keyboard.c $(REPO_ROOT)/main/keyboard.c
         $(CC) $(CFLAGS) $< $(REPO_ROOT)/main/keyboard.c -o $@ $(LDFLAGS)
 
+test_wifi_setup: test_wifi_setup.c $(REPO_ROOT)/main/wifi_setup.c
+        $(CC) $(CFLAGS) $< $(REPO_ROOT)/main/wifi_setup.c -o $@ $(LDFLAGS)
+
 clean:
         rm -f $(TESTS) $(SECP256K1_OBJ)
diff --git a/tests/unit/test_wifi_setup.c b/tests/unit/test_wifi_setup.c
new file mode 100644
index 0000000..5f1b8f0
--- /dev/null
+++ b/tests/unit/test_wifi_setup.c
@@ -0,0 +1,121 @@
+#include "test_framework.h"
+#include "../../main/wifi_setup.h"
+#include <string.h>
+
+int main(void)
+{
+    printf("=== test_wifi_setup ===\n");
+
+    wifi_setup_t setup;
+    wifi_setup_init(&setup);
+
+    ASSERT_EQ_INT(SETUP_SCAN, (int)setup.state, "Init state = SCAN");
+    ASSERT_EQ_INT(0, setup.ap_count, "Init ap_count = 0");
+    ASSERT_EQ_INT(-1, setup.selected_ap, "Init selected_ap = -1");
+
+    wifi_ap_info_t test_aps[3] = {
+        {"FastNet",     -30, true},
+        {"SlowNet",     -70, true},
+        {"OpenNet",     -50, false},
+    };
+    wifi_setup_set_aps(&setup, test_aps, 3);
+
+    ASSERT_EQ_INT(SETUP_LIST, (int)setup.state, "After set_aps: state = LIST");
+    ASSERT_EQ_INT(3, setup.ap_count, "After set_aps: ap_count = 3");
+    ASSERT_EQ_INT(3, wifi_setup_visible_count(&setup), "Visible count = 3");
+
+    {
+        const wifi_ap_info_t *ap = wifi_setup_get_visible(&setup, 0);
+        ASSERT(ap != NULL, "Visible AP 0 is not NULL");
+        ASSERT_EQ_STR("FastNet", ap->ssid, "AP 0 = FastNet");
+        ASSERT_EQ_INT(-30, ap->rssi, "AP 0 RSSI = -30");
+        ASSERT(ap->secured, "AP 0 is secured");
+    }
+
+    {
+        const wifi_ap_info_t *ap = wifi_setup_get_visible(&setup, 2);
+        ASSERT(ap != NULL, "Visible AP 2 is not NULL");
+        ASSERT_EQ_STR("OpenNet", ap->ssid, "AP 2 = OpenNet");
+        ASSERT(!ap->secured, "AP 2 is open");
+    }
+
+    {
+        const wifi_ap_info_t *ap = wifi_setup_get_visible(&setup, 3);
+        ASSERT(ap == NULL, "Out of range returns NULL");
+    }
+
+    setup_state_t s = wifi_setup_handle_select(&setup, 0);
+    ASSERT_EQ_INT(SETUP_PASSWORD, (int)s, "Select AP 0: state = PASSWORD");
+    ASSERT_EQ_INT(0, setup.selected_ap, "Selected AP index = 0");
+    ASSERT_EQ_STR("FastNet", setup.selected_ssid, "Selected SSID = FastNet");
+
+    wifi_setup_handle_connect(&setup);
+    ASSERT_EQ_INT(SETUP_CONNECTING, (int)setup.state, "Connect: state = CONNECTING");
+
+    s = wifi_setup_handle_connect_result(&setup, true, "192.168.1.42");
+    ASSERT_EQ_INT(SETUP_SUCCESS, (int)s, "Connect success: state = SUCCESS");
+    ASSERT_EQ_STR("192.168.1.42", setup.connect_ip, "Connect IP stored");
+
+    wifi_setup_init(&setup);
+    wifi_setup_set_aps(&setup, test_aps, 3);
+    wifi_setup_handle_select(&setup, 1);
+    wifi_setup_handle_connect(&setup);
+
+    s = wifi_setup_handle_connect_result(&setup, false, NULL);
+    ASSERT_EQ_INT(SETUP_FAILED, (int)s, "Connect fail: state = FAILED");
+    ASSERT(setup.connect_failed_auth, "Failed auth flag set");
+
+    s = wifi_setup_handle_retry(&setup);
+    ASSERT_EQ_INT(SETUP_PASSWORD, (int)s, "Retry: state = PASSWORD");
+    ASSERT(!setup.connect_failed_auth, "Retry clears auth flag");
+
+    wifi_setup_init(&setup);
+    wifi_setup_set_aps(&setup, test_aps, 3);
+    wifi_setup_handle_select(&setup, 0);
+    wifi_setup_handle_connect(&setup);
+    wifi_setup_handle_connect_result(&setup, false, NULL);
+
+    s = wifi_setup_handle_change_network(&setup);
+    ASSERT_EQ_INT(SETUP_LIST, (int)s, "Change network: state = LIST");
+
+    wifi_setup_init(&setup);
+    s = wifi_setup_handle_cancel(&setup);
+    ASSERT_EQ_INT(SETUP_CANCELLED, (int)s, "Cancel: state = CANCELLED");
+
+    wifi_setup_init(&setup);
+    wifi_ap_info_t many_aps[12];
+    for (int i = 0; i < 12; i++) {
+        snprintf(many_aps[i].ssid, sizeof(many_aps[i].ssid), "Net%d", i);
+        many_aps[i].rssi = -30 - i * 5;
+        many_aps[i].secured = true;
+    }
+    wifi_setup_set_aps(&setup, many_aps, 12);
+    ASSERT_EQ_INT(12, setup.ap_count, "12 APs stored");
+    ASSERT_EQ_INT(8, wifi_setup_visible_count(&setup), "Only 8 visible");
+
+    {
+        const wifi_ap_info_t *ap = wifi_setup_get_visible(&setup, 7);
+        ASSERT(ap != NULL, "8th visible AP exists");
+        ASSERT_EQ_STR("Net7", ap->ssid, "8th visible = Net7");
+    }
+
+    wifi_setup_init(&setup);
+    s = wifi_setup_handle_select(&setup, 0);
+    ASSERT_EQ_INT(SETUP_SCAN, (int)s, "Select in SCAN state = no change");
+
+    s = wifi_setup_handle_select(&setup, -1);
+    ASSERT_EQ_INT(SETUP_SCAN, (int)s, "Select invalid idx = no change");
+
+    wifi_setup_init(&setup);
+    wifi_setup_set_aps(&setup, test_aps, 3);
+    s = wifi_setup_handle_retry(&setup);
+    ASSERT_EQ_INT(SETUP_LIST, (int)s, "Retry in LIST state = no change");
+
+    s = wifi_setup_handle_change_network(&setup);
+    ASSERT_EQ_INT(SETUP_LIST, (int)s, "Change network in LIST state = no change");
+
+    ASSERT_EQ_INT(0, wifi_setup_visible_count(NULL), "NULL setup returns 0");
+    ASSERT(NULL == wifi_setup_get_visible(NULL, 0), "NULL setup returns NULL AP");
+
+    TEST_SUMMARY();
+}