feat: implement Wi-Fi provisioning and persistent configuration

test/host/test_config_store.c

@@ -0,0 +1,45 @@
+#include <assert.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "maze32_config_store.h"
+#include "nvs.h"
+#include "nvs_flash.h"
+
+static maze32_wifi_credentials_t credentials(const char *ssid, const char *password)
+{
+    maze32_wifi_credentials_t value = {0};
+    memcpy(value.ssid, ssid, strlen(ssid) + 1U);
+    memcpy(value.password, password, strlen(password) + 1U);
+    return value;
+}
+
+int main(void)
+{
+    assert(maze32_config_store_init() == ESP_OK);
+    maze32_wifi_credentials_t loaded = {0};
+    assert(maze32_config_store_load(&loaded) == ESP_ERR_NOT_FOUND);
+
+    maze32_wifi_credentials_t saved = credentials("PersistentNetwork", "safe-passphrase");
+    assert(maze32_config_store_save(&saved) == ESP_OK);
+    assert(nvs_flash_deinit() == ESP_OK);
+    assert(maze32_config_store_init() == ESP_OK);
+    assert(maze32_config_store_load(&loaded) == ESP_OK);
+    assert(strcmp(loaded.ssid, saved.ssid) == 0);
+    assert(strcmp(loaded.password, saved.password) == 0);
+
+    maze32_wifi_credentials_t invalid = credentials("PersistentNetwork", "short");
+    assert(maze32_config_store_save(&invalid) == ESP_ERR_INVALID_ARG);
+    memset(&loaded, 0, sizeof(loaded));
+    assert(maze32_config_store_load(&loaded) == ESP_OK);
+    assert(strcmp(loaded.password, saved.password) == 0);
+
+    fake_nvs_set_schema(MAZE32_WIFI_CONFIG_SCHEMA_VERSION + 1U);
+    assert(maze32_config_store_load(&loaded) == ESP_ERR_INVALID_VERSION);
+    fake_nvs_set_schema(MAZE32_WIFI_CONFIG_SCHEMA_VERSION);
+
+    assert(maze32_config_store_clear() == ESP_OK);
+    assert(maze32_config_store_load(&loaded) == ESP_ERR_NOT_FOUND);
+    puts("configuration NVS tests: PASS");
+    return 0;
+}