Update

Author: luozijun

system-configuration/Cargo.toml

@@ -12,3 +12,6 @@ readme = "../README.md"
 [dependencies]
 core-foundation = "0.5"
 system-configuration-sys = { path = "../system-configuration-sys", version = "0.1" }
+
+[features]
+nightly = []

system-configuration/src/lib.rs

@@ -16,12 +16,14 @@
 //!
 //! [SystemConfiguration]: https://developer.apple.com/documentation/systemconfiguration?language=objc
 //! [`system-configuration-sys`]: https://crates.io/crates/system-configuration-sys
-#![feature(test)]
+#![cfg_attr(all(feature = "nightly", test), feature(test))]
 #![deny(missing_docs)]
 
 #[macro_use]
 extern crate core_foundation;
 extern crate system_configuration_sys;
+#[cfg(all(feature = "nightly", test))]
+extern crate test;
 
 pub mod dynamic_store;
 pub mod preferences;

system-configuration/src/network_configuration.rs

@@ -134,12 +134,12 @@ impl SCNetworkService {
             .iter()
             .map(|item| item.downcast::<SCNetworkService>().unwrap())
             .collect::<Vec<SCNetworkService>>()
-
+        
 
         // let array: CFArray<SCNetworkService> = unsafe {
         //     CFArray::wrap_under_get_rule(SCNetworkServiceCopyAll(prefs.as_concrete_TypeRef()))
         // };
-        
+
         // array
         //     .iter()
         //     .map(|item| item.as_CFType().downcast::<SCNetworkService>().unwrap())
@@ -149,12 +149,17 @@ impl SCNetworkService {
     /// Returns the user-specified ordering of network services within the specified
     /// preferences.
     pub fn list_order(prefs: &SCPreferences) -> Vec<SCNetworkService> {
-        let netset = unsafe { SCNetworkSetCopyCurrent(prefs.as_concrete_TypeRef()) };
+        let mut services = Vec::new();
 
-        let array: CFArray<CFType> =
-            unsafe { CFArray::wrap_under_get_rule(SCNetworkSetGetServiceOrder(netset)) };
+        let netset = unsafe { SCNetworkSetCopyCurrent(prefs.as_concrete_TypeRef()) };
 
-        let mut services = Vec::new();
+        let array: CFArray<CFType> = unsafe {
+            let arr_ref = SCNetworkSetGetServiceOrder(netset);
+            if arr_ref.is_null() {
+                return services;
+            }
+            CFArray::wrap_under_get_rule(arr_ref)
+        };
 
         for item in array.iter() {
             if let Some(id) = item.downcast::<CFString>() {
@@ -416,7 +421,7 @@ impl fmt::Debug for SCNetworkInterface {
 }
 
 
-#[test]
+#[cfg(all(feature = "nightly", test))]
 fn test_network_service() {
     use core_foundation::base::kCFAllocatorDefault;
 
@@ -426,11 +431,11 @@ fn test_network_service() {
     for network_service in list.iter() {
         let network_service_id = network_service.id();
         let res = SCNetworkService::from_id(&prefs, &network_service_id);
-        
+
         assert!(res.is_some());
         let res = res.unwrap();
-        
+
         assert_eq!(res.id(), network_service.id());
         assert_eq!(res.name(), network_service.name());
     }
-}
+}