Add test for ActiveSamplingRequest (#6307)

* Add test for ActiveSamplingRequest

* Fix the column_indexes field from the requested ones to the responded ones

* Fix clippy errors

* Move tests to tests.rs

* Fix unused import

* Fix clippy error

* Merge branch 'unstable' into fork/add-test-for-active-sampling-request

# Conflicts:
#	beacon_node/network/Cargo.toml
#	beacon_node/network/src/sync/sampling.rs

* Merge branch 'unstable' into fork/add-test-for-active-sampling-request

beacon_node/network/src/sync/manager.rs

@@ -71,6 +71,9 @@ use std::time::Duration;
 use tokio::sync::mpsc;
 use types::{BlobSidecar, DataColumnSidecar, EthSpec, Hash256, SignedBeaconBlock, Slot};
 
+#[cfg(test)]
+use types::ColumnIndex;
+
 /// The number of slots ahead of us that is allowed before requesting a long-range (batch)  Sync
 /// from a peer. If a peer is within this tolerance (forwards or backwards), it is treated as a
 /// fully sync'd peer.
@@ -334,6 +337,17 @@ impl<T: BeaconChainTypes> SyncManager<T> {
         self.sampling.active_sampling_requests()
     }
 
+    #[cfg(test)]
+    pub(crate) fn assert_sampling_request_status(
+        &self,
+        block_root: Hash256,
+        ongoing: &Vec<ColumnIndex>,
+        no_peers: &Vec<ColumnIndex>,
+    ) {
+        self.sampling
+            .assert_sampling_request_status(block_root, ongoing, no_peers);
+    }
+
     fn network_globals(&self) -> &NetworkGlobals<T::EthSpec> {
         self.network.network_globals()
     }