esp_netif: Update the test to exercise netif list matching APIs

components/esp_netif/test/test_esp_netif.c

@@ -38,6 +38,8 @@ TEST_CASE("esp_netif: get from if_key", "[esp_netif][leaks=0]")
 
 }
 
+// This is a private esp-netif API, but include here to test it
+bool esp_netif_is_netif_listed(esp_netif_t *esp_netif);
 
 TEST_CASE("esp_netif: create and delete multiple netifs", "[esp_netif][leaks=0]")
 {
@@ -54,12 +56,19 @@ TEST_CASE("esp_netif: create and delete multiple netifs", "[esp_netif][leaks=0]"
         TEST_ASSERT_NOT_NULL(netifs[i]);
     }
 
-    // there's no AP within created stations
-    TEST_ASSERT_EQUAL(NULL, esp_netif_get_handle_from_ifkey("WIFI_AP_DEF"));
+    // there's no AP within created netifs
+    TEST_ASSERT_NULL(esp_netif_get_handle_from_ifkey("WIFI_AP_DEF"));
 
-    // destroy
+    // check that the created netifs are correctly found by their interface keys and globally listed
+    for (int i=0; i<nr_of_netifs; ++i) {
+        TEST_ASSERT_EQUAL(netifs[i], esp_netif_get_handle_from_ifkey(if_keys[i]));
+        TEST_ASSERT_TRUE(esp_netif_is_netif_listed(netifs[i]));
+    }
+
+    // destroy one by one and check it's been removed
     for (int i=0; i<nr_of_netifs; ++i) {
         esp_netif_destroy(netifs[i]);
+        TEST_ASSERT_FALSE(esp_netif_is_netif_listed(netifs[i]));
     }
 
 }