fix(test): fix test_4_20_kill1

Fixes #3141

Test plan
---------
test_4_20_kill1

Cargo.toml

@@ -59,6 +59,7 @@ serde_json = "1"
 futures = "0.3"
 
 near-logger-utils = { path = "./test-utils/logger" }
+near-actix-utils = { path = "./utils/actix" }
 near-chain-configs = { path = "./core/chain-configs" }
 near-crypto = { path = "./core/crypto" }
 near-primitives = { path = "./core/primitives" }

test-utils/testlib/src/node/process_node.rs

@@ -15,6 +15,10 @@ use neard::config::NearConfig;
 use crate::node::Node;
 use crate::user::rpc_user::RpcUser;
 use crate::user::User;
+use actix::{Actor, System};
+use futures::{FutureExt, TryFutureExt};
+use near_jsonrpc_client::new_client;
+use near_network::test_utils::WaitOrTimeout;
 
 pub enum ProcessNodeState {
     Stopped,
@@ -46,7 +50,24 @@ impl Node for ProcessNode {
                 let child =
                     self.get_start_node_command().spawn().expect("start node command failed");
                 self.state = ProcessNodeState::Running(child);
-                thread::sleep(Duration::from_secs(3));
+                let addr = self.config.rpc_config.addr.clone();
+
+                System::run(|| {
+                    WaitOrTimeout::new(
+                        Box::new(move |_| {
+                            actix::spawn(
+                                new_client(&format!("http://{}", addr))
+                                    .status()
+                                    .map_ok(|_| System::current().stop())
+                                    .map(drop),
+                            )
+                        }),
+                        500,
+                        10000,
+                    )
+                    .start();
+                })
+                .unwrap();
             }
             ProcessNodeState::Running(_) => panic!("Node is already running"),
         }
@@ -123,6 +144,8 @@ impl ProcessNode {
                 "neard",
                 "--bin",
                 "neard",
+                "--features",
+                "expensive_tests",
                 "--",
                 "--home",
                 &self.work_dir,

tests/test_rejoin.rs

@@ -53,6 +53,8 @@ mod test {
 
     fn test_kill_1(num_nodes: usize, num_trials: usize, two_shards: bool, test_prefix: &str) {
         warmup();
+        near_actix_utils::init_stop_on_panic();
+
         // Start all nodes, crash node#2, proceed, restart node #2 but crash node #3
         let crash1 = 2;
         let crash2 = 3;