test: don't hardcode an endpoint (#7095)

crates/evm/core/src/fork/backend.rs

@@ -684,15 +684,18 @@ mod tests {
     use foundry_common::provider::alloy::get_http_provider;
     use foundry_config::{Config, NamedChain};
     use std::{collections::BTreeSet, path::PathBuf, sync::Arc};
-    const ENDPOINT: &str = "https://mainnet.infura.io/v3/40bee2d557ed4b52908c3e62345a3d8b";
+
+    const ENDPOINT: Option<&str> = option_env!("ETH_RPC_URL");
 
     #[tokio::test(flavor = "multi_thread")]
     async fn shared_backend() {
-        let provider = get_http_provider(ENDPOINT);
+        let Some(endpoint) = ENDPOINT else { return };
+
+        let provider = get_http_provider(endpoint);
         let meta = BlockchainDbMeta {
             cfg_env: Default::default(),
             block_env: Default::default(),
-            hosts: BTreeSet::from([ENDPOINT.to_string()]),
+            hosts: BTreeSet::from([endpoint.to_string()]),
         };
 
         let db = BlockchainDb::new(meta, None);
@@ -738,19 +741,21 @@ mod tests {
 
     #[tokio::test(flavor = "multi_thread")]
     async fn can_read_write_cache() {
-        let provider = get_http_provider(ENDPOINT);
+        let Some(endpoint) = ENDPOINT else { return };
+
+        let provider = get_http_provider(endpoint);
 
         let block_num = provider.get_block_number().await.unwrap();
 
         let config = Config::figment();
         let mut evm_opts = config.extract::<EvmOpts>().unwrap();
         evm_opts.fork_block_number = Some(block_num);
 
-        let (env, _block) = evm_opts.fork_evm_env(ENDPOINT).await.unwrap();
+        let (env, _block) = evm_opts.fork_evm_env(endpoint).await.unwrap();
 
         let fork = CreateFork {
             enable_caching: true,
-            url: ENDPOINT.to_string(),
+            url: endpoint.to_string(),
             env: env.clone(),
             evm_opts,
         };