use rpc test url from env

Author: ryansmith3136

.github/workflows/test.yml

@@ -36,3 +36,5 @@ jobs:
           cargo pgrx install -p pg_golden_axe --pg-config /tmp/golden-axe-pg-test/install/postgresql-17.2.0-x86_64-unknown-linux-gnu/bin/pg_config
       - name: Run tests
         run: cargo test
+          env:
+            RPC_URL: ${{ secrets.RPC_URL }}

shared/src/jrpc.rs

@@ -277,7 +277,9 @@ mod tests {
 
     #[test_log::test(tokio::test)]
     async fn test_block_and_logs() {
-        let client = super::Client::new("https://eth.merkle.io/");
+        let url = std::env::var("RPC_URL").unwrap_or_else(|_| "https://eth.merkle.io/".to_string());
+        let client = super::Client::new(&url);
+        println!("{url}");
         let n: u64 = 12_911_679;
 
         let b = client.block(format!("0x{:x}", n)).await.unwrap();