authorities stored based on the session hash map

Signed-off-by: Uncle Stinky <uncle.stinky@ghostchain.io>

pallets/slow-clap/src/mock.rs

@@ -16,7 +16,6 @@ use sp_staking::{
     SessionIndex,
 };
 
-#[cfg(feature = "runtime-benchmarks")]
 use sp_runtime::BuildStorage;
 
 use crate as slow_clap;
@@ -231,12 +230,33 @@ pub fn advance_session() {
     let now = System::block_number().max(1);
     System::set_block_number(now + 1);
     Session::rotate_session();
+    let session_index = Session::current_index();
 
     let authorities = Session::validators()
         .into_iter()
         .map(UintAuthorityId)
         .collect();
 
-    SlowClap::set_test_authorities(authorities);
-    assert_eq!(Session::current_index(), (now / Period::get()) as u32);
+    SlowClap::set_test_authorities(session_index, authorities);
+    assert_eq!(session_index, (now / Period::get()) as u32);
+}
+
+pub fn advance_session_with_authority(authority: u64) {
+    let now = System::block_number().max(1);
+    System::set_block_number(now + 1);
+    Session::rotate_session();
+
+    let session_index = Session::current_index();
+
+    SlowClap::set_test_authorities(
+        session_index,
+        vec![
+            UintAuthorityId::from(authority),
+            UintAuthorityId::from(69),
+            UintAuthorityId::from(420),
+            UintAuthorityId::from(1337),
+        ]
+    );
+    assert_eq!(session_index, (now / Period::get()) as u32);
+
 }