feat: add Foundry Anvil image impl (#272)

# Community Testcontainers Implementation for [Foundry
Anvil](https://book.getfoundry.sh/anvil/)

This is a community implementation of the
[Testcontainers](https://testcontainers.org/) interface for
[Foundry](https://github.com/foundry-rs/foundry)
[Anvil](https://book.getfoundry.sh/anvil/).

It is not officially supported by Foundry, but it is a community effort
to provide a more user-friendly interface for running Anvil inside a
Docker container.

The endpoint of the container is intended to be injected into your
provider configuration, so that you can easily run tests against a local
Anvil instance. See the `test_anvil_node_container` test in
`src/anvil/mod.rs` for an example.

Cargo.toml

@@ -19,6 +19,7 @@ blocking = ["testcontainers/blocking"]
 watchdog = ["testcontainers/watchdog"]
 http_wait = ["testcontainers/http_wait"]
 properties-config = ["testcontainers/properties-config"]
+anvil = []
 clickhouse = ["http_wait"]
 cncf_distribution = []
 consul = []
@@ -71,6 +72,9 @@ testcontainers = { version = "0.23.0" }
 
 
 [dev-dependencies]
+alloy-network = "0.9.2"
+alloy-provider = "0.9.2"
+alloy-transport-http = "0.9.2"
 async-nats = "0.38.0"
 aws-config = "1.0.1"
 aws-sdk-dynamodb = "1.2.0"

src/anvil/mod.rs

@@ -0,0 +1,140 @@
+use std::borrow::Cow;
+
+use testcontainers::{
+    core::{ContainerPort, WaitFor},
+    Image,
+};
+
+const NAME: &str = "ghcr.io/foundry-rs/foundry";
+/// Users can override the tag in their code with [`ImageExt::with_tag`](https://docs.rs/testcontainers/0.23.1/testcontainers/core/trait.ImageExt.html#tymethod.with_tag).
+const TAG: &str = "stable@sha256:daeeaaf4383ee0cbfc9f31f079a04ffb0123e49e5f67f2a20b5ce1ac1959a4d6";
+const PORT: ContainerPort = ContainerPort::Tcp(8545);
+
+/// # Community Testcontainers Implementation for [Foundry Anvil](https://book.getfoundry.sh/anvil/)
+///
+/// This is a community implementation of the [Testcontainers](https://testcontainers.org/) interface for [Foundry Anvil](https://book.getfoundry.sh/anvil/).
+///
+/// It is not officially supported by Foundry, but it is a community effort to provide a more user-friendly interface for running Anvil inside a Docker container.
+///
+/// The endpoint of the container is intended to be injected into your provider configuration, so that you can easily run tests against a local Anvil instance.
+/// See the `test_anvil_node_container` test for an example of how to use this.
+#[derive(Debug, Clone, Default)]
+pub struct AnvilNode {
+    chain_id: Option<u64>,
+    fork_url: Option<String>,
+    fork_block_number: Option<u64>,
+}
+
+impl AnvilNode {
+    /// Specify the chain ID - this will be Ethereum Mainnet by default
+    pub fn with_chain_id(mut self, chain_id: u64) -> Self {
+        self.chain_id = Some(chain_id);
+        self
+    }
+
+    /// Specify the fork URL
+    pub fn with_fork_url(mut self, fork_url: impl Into<String>) -> Self {
+        self.fork_url = Some(fork_url.into());
+        self
+    }
+
+    /// Specify the fork block number
+    pub fn with_fork_block_number(mut self, block_number: u64) -> Self {
+        self.fork_block_number = Some(block_number);
+        self
+    }
+}
+
+impl Image for AnvilNode {
+    fn cmd(&self) -> impl IntoIterator<Item = impl Into<Cow<'_, str>>> {
+        let mut cmd = vec![];
+
+        if let Some(chain_id) = self.chain_id {
+            cmd.push("--chain-id".to_string());
+            cmd.push(chain_id.to_string());
+        }
+
+        if let Some(ref fork_url) = self.fork_url {
+            cmd.push("--fork-url".to_string());
+            cmd.push(fork_url.to_string());
+        }
+
+        if let Some(fork_block_number) = self.fork_block_number {
+            cmd.push("--fork-block-number".to_string());
+            cmd.push(fork_block_number.to_string());
+        }
+
+        cmd.into_iter().map(Cow::from)
+    }
+
+    fn entrypoint(&self) -> Option<&str> {
+        Some("anvil")
+    }
+
+    fn env_vars(
+        &self,
+    ) -> impl IntoIterator<Item = (impl Into<Cow<'_, str>>, impl Into<Cow<'_, str>>)> {
+        [("ANVIL_IP_ADDR".to_string(), "0.0.0.0".to_string())].into_iter()
+    }
+
+    fn expose_ports(&self) -> &[ContainerPort] {
+        &[PORT]
+    }
+
+    fn name(&self) -> &str {
+        NAME
+    }
+
+    fn tag(&self) -> &str {
+        TAG
+    }
+
+    fn ready_conditions(&self) -> Vec<WaitFor> {
+        vec![WaitFor::message_on_stdout("Listening on 0.0.0.0:8545")]
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use alloy_network::AnyNetwork;
+    use alloy_provider::{Provider, RootProvider};
+    use alloy_transport_http::Http;
+    use testcontainers::runners::AsyncRunner;
+
+    use super::*;
+
+    #[tokio::test]
+    async fn test_anvil_node_container() {
+        let _ = pretty_env_logger::try_init();
+
+        let node = AnvilNode::default().start().await.unwrap();
+        let port = node.get_host_port_ipv4(PORT).await.unwrap();
+
+        let provider: RootProvider<Http<_>, AnyNetwork> =
+            RootProvider::new_http(format!("http://localhost:{port}").parse().unwrap());
+
+        let block_number = provider.get_block_number().await.unwrap();
+
+        assert_eq!(block_number, 0);
+    }
+
+    #[test]
+    fn test_command_construction() {
+        let node = AnvilNode::default()
+            .with_chain_id(1337)
+            .with_fork_url("http://example.com");
+
+        let cmd: Vec<String> = node
+            .cmd()
+            .into_iter()
+            .map(|c| c.into().into_owned())
+            .collect();
+
+        assert_eq!(
+            cmd,
+            vec!["--chain-id", "1337", "--fork-url", "http://example.com"]
+        );
+
+        assert_eq!(node.entrypoint(), Some("anvil"));
+    }
+}

src/lib.rs

@@ -8,6 +8,10 @@
 #![doc = include_str!("../README.md")]
 //! Please have a look at the documentation of the separate modules for examples on how to use the module.
 
+#[cfg(feature = "anvil")]
+#[cfg_attr(docsrs, doc(cfg(feature = "anvil")))]
+/// **Anvil** (local blockchain emulator for EVM-compatible development) testcontainer
+pub mod anvil;
 #[cfg(feature = "clickhouse")]
 #[cfg_attr(docsrs, doc(cfg(feature = "clickhouse")))]
 /// **Clickhouse** (analytics database) testcontainer
@@ -150,7 +154,7 @@ pub mod solr;
 pub mod surrealdb;
 #[cfg(feature = "trufflesuite_ganachecli")]
 #[cfg_attr(docsrs, doc(cfg(feature = "trufflesuite_ganachecli")))]
-/// **Trufflesuite Ganache CLI** (etherium simulator) testcontainer
+/// **Trufflesuite Ganache CLI** (ethereum simulator) testcontainer
 pub mod trufflesuite_ganachecli;
 #[cfg(feature = "valkey")]
 #[cfg_attr(docsrs, doc(cfg(feature = "valkey")))]