Start reorg of per_epoch_processing

eth2/state_processing/src/per_epoch_processing/tests.rs

@@ -0,0 +1,21 @@
+#![cfg(test)]
+use crate::EpochProcessable;
+use env_logger::{Builder, Env};
+use types::beacon_state::BeaconStateBuilder;
+use types::*;
+
+#[test]
+fn runs_without_error() {
+    Builder::from_env(Env::default().default_filter_or("error")).init();
+
+    let mut builder = BeaconStateBuilder::new(8);
+    builder.spec = ChainSpec::few_validators();
+
+    builder.build().unwrap();
+    builder.teleport_to_end_of_epoch(builder.spec.genesis_epoch + 4);
+
+    let mut state = builder.cloned_state();
+
+    let spec = &builder.spec;
+    state.per_epoch_processing(spec).unwrap();
+}