More credible test fixture for batch_messages

relayer/src/chain/cosmos/batch.rs

@@ -219,14 +219,58 @@ fn batch_messages(
 #[cfg(test)]
 mod tests {
     use super::batch_messages;
-    use crate::chain::cosmos::types::account::Account;
+    use crate::chain::cosmos::types::account::{Account, AccountNumber, AccountSequence};
     use crate::chain::cosmos::types::config::TxConfig;
+    use crate::config;
     use crate::config::types::{MaxMsgNum, MaxTxSize, Memo};
     use crate::keyring::KeyEntry;
+    use bitcoin::network::constants::Network;
+    use bitcoin::util::bip32::{ExtendedPrivKey, ExtendedPubKey};
+    use bitcoin::util::key::Secp256k1;
+    use ibc::core::ics24_host::identifier::ChainId;
     use ibc_proto::google::protobuf::Any;
 
+    fn decode_bech32(input: &str) -> Vec<u8> {
+        use bech32::FromBase32;
+
+        bech32::decode(input)
+            .and_then(|(_, data, _)| Vec::from_base32(&data))
+            .unwrap()
+    }
+
     fn test_fixture() -> (TxConfig, KeyEntry, Account) {
-        todo!()
+        let path = concat!(
+            env!("CARGO_MANIFEST_DIR"),
+            "/tests/config/fixtures/relayer_conf_example.toml"
+        );
+        let config = config::load(path).expect("could not parse config");
+        let chain_config = config.find_chain(&ChainId::from_string("chain_A")).unwrap();
+
+        let tx_config = TxConfig::try_from(chain_config).expect("could not obtain tx config");
+
+        let secp256k1 = Secp256k1::new();
+        let private_key = ExtendedPrivKey::new_master(
+            Network::Testnet,
+            b"the quick brown fox jumps over the lazy dog",
+        )
+        .unwrap();
+        // Derive a private subkey with a path?
+        let public_key = ExtendedPubKey::from_priv(&secp256k1, &private_key);
+        let account = String::from("cosmos1m2rdz42g8xwqa63r4s8tnsfwyvktcajpn93cvn");
+        let address = decode_bech32(&account);
+        let key_entry = KeyEntry {
+            public_key,
+            private_key,
+            account,
+            address,
+        };
+
+        let account = Account {
+            number: AccountNumber::new(0),
+            sequence: AccountSequence::new(0),
+        };
+
+        (tx_config, key_entry, account)
     }
 
     #[test]