removed warnings by adding missing documentation

rpc/src/v1/tests/helpers/account_provider.rs

@@ -33,6 +33,7 @@ pub struct TestAccount {
 }
 
 impl TestAccount {
+	/// Creates new test account.
 	pub fn new(password: &str) -> Self {
 		TestAccount {
 			unlocked: false,

rpc/src/v1/tests/helpers/external_miner.rs

@@ -22,6 +22,7 @@ use v1::helpers::ExternalMinerService;
 
 /// Test ExternalMinerService;
 pub struct TestExternalMiner {
+	/// External miners hashrates.
 	pub hashrates: Arc<RwLock<HashMap<H256, U256>>>
 }
 

rpc/src/v1/tests/helpers/mod.rs

@@ -14,6 +14,8 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
+//! Test rpc services.
+
 mod account_provider;
 mod sync_provider;
 mod miner_service;

rpc/src/v1/tests/helpers/sync_provider.rs

@@ -34,6 +34,7 @@ pub struct TestSyncProvider {
 }
 
 impl TestSyncProvider {
+	/// Creates new sync provider.
 	pub fn new(config: Config) -> Self {
 		TestSyncProvider {
 			status: RwLock::new(SyncStatus {