Move TestRig into its own crate

Cargo.toml

@@ -16,6 +16,7 @@ members = [
 	"beacon_node",
 	"beacon_node/db",
 	"beacon_node/beacon_chain",
+	"beacon_node/beacon_chain/test_harness",
 	"protos",
 	"validator_client",
 ]

beacon_node/beacon_chain/test_harness/Cargo.toml

@@ -0,0 +1,22 @@
+[package]
+name = "test_harness"
+version = "0.1.0"
+authors = ["Paul Hauner <paul@paulhauner.com>"]
+edition = "2018"
+
+[dependencies]
+beacon_chain = { path = "../../beacon_chain" }
+block_producer = { path = "../../../eth2/block_producer" }
+bls = { path = "../../../eth2/utils/bls" }
+boolean-bitfield = { path = "../../../eth2/utils/boolean-bitfield" }
+db = { path = "../../db" }
+failure = "0.1"
+failure_derive = "0.1"
+genesis = { path = "../../../eth2/genesis" }
+hashing = { path = "../../../eth2/utils/hashing" }
+serde = "1.0"
+serde_derive = "1.0"
+serde_json = "1.0"
+slot_clock = { path = "../../../eth2/utils/slot_clock" }
+ssz = { path = "../../../eth2/utils/ssz" }
+types = { path = "../../../eth2/types" }

beacon_node/beacon_chain/test_harness/src/test_rig.rs

@@ -2,7 +2,6 @@ use super::TestValidator;
 pub use beacon_chain::dump::{Error as DumpError, SlotDump};
 use beacon_chain::BeaconChain;
 use block_producer::BeaconNode;
-#[cfg(test)]
 use db::{
     stores::{BeaconBlockStore, BeaconStateStore},
     MemoryDB,

beacon_node/beacon_chain/test_harness/src/validator.rs

@@ -1,6 +1,5 @@
 use super::{BenchingBeaconNode, DirectDuties};
 use beacon_chain::BeaconChain;
-#[cfg(test)]
 use block_producer::{test_utils::TestSigner, BlockProducer, Error as PollError};
 use db::MemoryDB;
 use slot_clock::TestingSlotClock;

beacon_node/beacon_chain/test_harness/tests/chain.rs

@@ -1,11 +1,17 @@
-use self::utils::TestRig;
+use test_harness::TestRig;
 use types::ChainSpec;
 
-mod utils;
+#[test]
+fn it_can_build_on_genesis_block() {
+    let validator_count = 2;
+    let mut rig = TestRig::new(ChainSpec::foundation(), validator_count);
+
+    rig.advance_chain_with_block();
+}
 
 #[test]
 #[ignore]
-fn it_can_produce_blocks() {
+fn it_can_produce_past_first_epoch_boundary() {
     let validator_count = 2;
     let mut rig = TestRig::new(ChainSpec::foundation(), validator_count);