feat(cheats): setup config env vars

crates/cheatcodes/spec/src/cheatcode.rs

@@ -86,6 +86,12 @@ pub enum Group {
     ///
     /// Safety: safe.
     Scripting,
+    /// Cheatcodes that interact with the program's forking configuration.
+    ///
+    /// Examples: `forkChains`, `forkChainRpcUrl`, `forkUint`.
+    ///
+    /// Safety: safe.
+    Forking,
     /// Cheatcodes that interact with the OS or filesystem.
     ///
     /// Examples: `ffi`, `projectRoot`, `writeFile`.
@@ -140,6 +146,7 @@ impl Group {
         match self {
             Self::Evm | Self::Testing => None,
             Self::Scripting
+            | Self::Forking
             | Self::Filesystem
             | Self::Environment
             | Self::String
@@ -157,6 +164,7 @@ impl Group {
             Self::Evm => "evm",
             Self::Testing => "testing",
             Self::Scripting => "scripting",
+            Self::Forking => "forking",
             Self::Filesystem => "filesystem",
             Self::Environment => "environment",
             Self::String => "string",

crates/cheatcodes/spec/src/vm.rs

@@ -2179,8 +2179,113 @@ interface Vm {
     #[cheatcode(group = Environment)]
     function isContext(ForgeContext context) external view returns (bool result);
 
-    // ======== Scripts ========
+    // ======== Forks ========
+
+    /// Returns an array with the name of all the configured fork chains.
+    ///
+    /// Note that the configured fork chains are subsections of the `[fork]` section of 'foundry.toml'.
+    #[cheatcode(group = Forking)]
+    function forkChains() external view returns (string[] memory);
+
+    /// Returns an array with the ids of all the configured fork chains.
+    ///
+    /// Note that the configured fork chains are subsections of the `[fork]` section of 'foundry.toml'.
+    #[cheatcode(group = Forking)]
+    function forkChainIds() external view returns (uint256[] memory);
+
+    /// Returns the chain name of the currently selected fork.
+    #[cheatcode(group = Forking)]
+    function forkChain() external view returns (string memory);
 
+    /// Returns the chain id of the currently selected fork.
+    #[cheatcode(group = Forking)]
+    function forkChainId() external view returns (uint256);
+
+    /// Returns the rpc url of the currently selected fork.
+    ///
+    /// By default, the rpc url of each fork is derived from the `[rpc_endpoints]`, unless
+    /// the rpc config is specifically informed in the fork config for that specific chain.
+    #[cheatcode(group = Forking)]
+    function forkRpcUrl() external view returns (string memory);
+
+    /// Returns the rpc url of the corresponding chain id.
+    ///
+    /// By default, the rpc url of each fork is derived from the `[rpc_endpoints]`, unless
+    /// the rpc config is specifically informed in the fork config for that specific chain.
+    #[cheatcode(group = Forking)]
+    function forkChainRpcUrl(uint256 id) external view returns (string memory);
+
+    /// Gets the value for the key `key` from the currently active fork and parses it as `bool`.
+    /// Reverts if the key was not found or the value could not be parsed.
+    #[cheatcode(group = Forking)]
+    function forkBool(string memory key) external view returns (bool);
+
+    /// Gets the value for the key `key` from the fork config for chain `chain` and parses it as `bool`.
+    /// Reverts if the key was not found or the value could not be parsed.
+    #[cheatcode(group = Forking)]
+    function forkChainBool(uint256 chain, string memory key) external view returns (bool);
+
+    /// Gets the value for the key `key` from the currently active fork and parses it as `int256`.
+    /// Reverts if the key was not found or the value could not be parsed.
+    #[cheatcode(group = Forking)]
+    function forkInt(string memory key) external view returns (int256);
+
+    /// Gets the value for the key `key` from the fork config for chain `chain` and parses it as `int256`.
+    /// Reverts if the key was not found or the value could not be parsed.
+    #[cheatcode(group = Forking)]
+    function forkChainInt(uint256 chain, string memory key) external view returns (int256);
+
+    /// Gets the value for the key `key` from the currently active fork and parses it as `uint256`.
+    /// Reverts if the key was not found or the value could not be parsed.
+    #[cheatcode(group = Forking)]
+    function forkUint(string memory key) external view returns (uint256);
+
+    /// Gets the value for the key `key` from the fork config for chain `chain` and parses it as `uint256`.
+    /// Reverts if the key was not found or the value could not be parsed.
+    #[cheatcode(group = Forking)]
+    function forkChainUint(uint256 chain, string memory key) external view returns (uint256);
+
+    /// Gets the value for the key `key` from the currently active fork and parses it as `address`.
+    /// Reverts if the key was not found or the value could not be parsed.
+    #[cheatcode(group = Forking)]
+    function forkAddress(string memory key) external view returns (address);
+
+    /// Gets the value for the key `key` from the fork config for chain `chain` and parses it as `address`.
+    /// Reverts if the key was not found or the value could not be parsed.
+    #[cheatcode(group = Forking)]
+    function forkChainAddress(uint256 chain, string memory key) external view returns (address);
+
+    /// Gets the value for the key `key` from the currently active fork and parses it as `bytes32`.
+    /// Reverts if the key was not found or the value could not be parsed.
+    #[cheatcode(group = Forking)]
+    function forkBytes32(string memory key) external view returns (bytes32);
+
+    /// Gets the value for the key `key` from the fork config for chain `chain` and parses it as `bytes32`.
+    /// Reverts if the key was not found or the value could not be parsed.
+    #[cheatcode(group = Forking)]
+    function forkChainBytes32(uint256 chain, string memory key) external view returns (bytes32);
+
+    /// Gets the value for the key `key` from the currently active fork and parses it as `string`.
+    /// Reverts if the key was not found or the value could not be parsed.
+    #[cheatcode(group = Forking)]
+    function forkString(string memory key) external view returns (string memory);
+
+    /// Gets the value for the key `key` from the fork config for chain `chain` and parses it as `string`.
+    /// Reverts if the key was not found or the value could not be parsed.
+    #[cheatcode(group = Forking)]
+    function forkChainString(uint256 chain, string memory key) external view returns (string memory);
+
+    /// Gets the value for the key `key` from the currently active fork and parses it as `bytes`.
+    /// Reverts if the key was not found or the value could not be parsed.
+    #[cheatcode(group = Forking)]
+    function forkBytes(string memory key) external view returns (bytes memory);
+
+    /// Gets the value for the key `key` from the fork config for chain `chain` and parses it as `bytes`.
+    /// Reverts if the key was not found or the value could not be parsed.
+    #[cheatcode(group = Forking)]
+    function forkChainBytes(uint256 chain, string memory key) external view returns (bytes memory);
+
+    // ======== Scripts ========
     // -------- Broadcasting Transactions --------
 
     /// Has the next call (at this call depth only) create transactions that can later be signed and sent onchain.

crates/cheatcodes/src/config.rs

@@ -4,8 +4,8 @@ use alloy_primitives::{U256, map::AddressHashMap};
 use foundry_common::{ContractsByArtifact, fs::normalize_path};
 use foundry_compilers::{ArtifactId, ProjectPathsConfig, utils::canonicalize};
 use foundry_config::{
-    Config, FsPermissions, ResolvedRpcEndpoint, ResolvedRpcEndpoints, RpcEndpoint, RpcEndpointUrl,
-    cache::StorageCachingConfig, fs_permissions::FsAccessKind,
+    Config, ForkConfig, FsPermissions, ResolvedRpcEndpoint, ResolvedRpcEndpoints, RpcEndpoint,
+    RpcEndpointUrl, cache::StorageCachingConfig, fs_permissions::FsAccessKind,
 };
 use foundry_evm_core::opts::EvmOpts;
 use std::{
@@ -63,6 +63,8 @@ pub struct CheatsConfig {
     pub chains: HashMap<String, ChainData>,
     /// Mapping of chain IDs to their aliases
     pub chain_id_to_alias: HashMap<u64, String>,
+    /// Fork configuration
+    pub forks: HashMap<String, ForkConfig>,
 }
 
 /// Chain data for getChain cheatcodes
@@ -114,6 +116,7 @@ impl CheatsConfig {
             internal_expect_revert: config.allow_internal_expect_revert,
             chains: HashMap::new(),
             chain_id_to_alias: HashMap::new(),
+            forks: config.forks.clone(),
         }
     }
 
@@ -318,6 +321,7 @@ impl Default for CheatsConfig {
             internal_expect_revert: false,
             chains: HashMap::new(),
             chain_id_to_alias: HashMap::new(),
+            forks: Default::default(),
         }
     }
 }