diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index b40a2f1..c6b2e56 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -15,6 +15,9 @@ jobs:
     runs-on: ${{ matrix.os }}
     env:
       RUST_LOG: tapyrusd=debug
+      NETWORK_ID: 1905960821
+      PRIVATE_KEY: cUJN5RVzYWFoeY8rUztd47jzXCu1p57Ay8V7pqCzsBD3PEXN7Dd4
+      GENESIS_BLOCK: 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
     strategy:
       fail-fast: false
       matrix:
diff --git a/src/lib.rs b/src/lib.rs
index c5cc433..fb35f97 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -253,14 +253,21 @@ impl Default for Conf<'_> {
     }
 }
 
-fn get_network_id() -> String {
+/// Return network ID for Tapyrus network.
+pub fn get_network_id() -> String {
     std::env::var("NETWORK_ID").expect("NETWORK_ID must be set")
 }
 
-fn get_genesis_block() -> String {
+/// Return genesis block data.
+pub fn get_genesis_block() -> String {
     std::env::var("GENESIS_BLOCK").expect("GENESIS_BLOCK must be set")
 }
 
+/// Return aggregated private key to generate blocks.
+pub fn get_private_key() -> String {
+    std::env::var("PRIVATE_KEY").expect("PRIVATE_KEY must be set")
+}
+
 impl TapyrusD {
     /// Launch the tapyrusd process from the given `exe` executable with default args.
     ///
@@ -582,15 +589,11 @@ mod test {
     use crate::exe_path;
     use crate::tapyruscore_rpc::jsonrpc::serde_json::Value;
     use crate::tapyruscore_rpc::{Auth, Client};
-    use crate::{get_available_port, Conf, TapyrusD, LOCAL_IP, P2P};
+    use crate::{get_available_port, get_private_key, Conf, TapyrusD, LOCAL_IP, P2P};
     use std::net::SocketAddrV4;
     use tapyruscore_rpc::RpcApi;
     use tempfile::TempDir;
 
-    fn get_private_key() -> String {
-        std::env::var("PRIVATE_KEY").expect("PRIVATE_KEY must be set")
-    }
-
     #[test]
     fn test_local_ip() {
         assert_eq!("127.0.0.1", format!("{}", LOCAL_IP));