// SPDX-License-Identifier: MIT
pragma solidity >=0.7.0 <0.9.0;
import "../src/Test.sol";
contract StdChainsTest is Test {
function testChainRpcInitialization() public {
// RPCs specified in `foundry.toml` should be updated.
assertEq(getChain(1).rpcUrl, "https://mainnet.infura.io/v3/b1d3925804e74152b316ca7da97060d3");
assertEq(getChain("optimism_goerli").rpcUrl, "https://goerli.optimism.io/");
assertEq(getChain("arbitrum_one_goerli").rpcUrl, "https://goerli-rollup.arbitrum.io/rpc/");
// Environment variables should be the next fallback
assertEq(getChain("arbitrum_nova").rpcUrl, "https://nova.arbitrum.io/rpc");
vm.setEnv("ARBITRUM_NOVA_RPC_URL", "myoverride");
assertEq(getChain("arbitrum_nova").rpcUrl, "myoverride");
vm.setEnv("ARBITRUM_NOVA_RPC_URL", "https://nova.arbitrum.io/rpc");
// Cannot override RPCs defined in `foundry.toml`
vm.setEnv("MAINNET_RPC_URL", "myoverride2");
assertEq(getChain("mainnet").rpcUrl, "https://mainnet.infura.io/v3/b1d3925804e74152b316ca7da97060d3");
// Other RPCs should remain unchanged.
assertEq(getChain(31337).rpcUrl, "http://127.0.0.1:8545");
assertEq(getChain("sepolia").rpcUrl, "https://sepolia.infura.io/v3/b9794ad1ddf84dfb8c34d6bb5dca2001");
}
function testRpc(string memory rpcAlias) internal {
string memory rpcUrl = getChain(rpcAlias).rpcUrl;
vm.createSelectFork(rpcUrl);
}
// Ensure we can connect to the default RPC URL for each chain.
// function testRpcs() public {
// testRpc("mainnet");
// testRpc("goerli");
// testRpc("sepolia");
// testRpc("optimism");
// testRpc("optimism_goerli");
// testRpc("arbitrum_one");
// testRpc("arbitrum_one_goerli");
// testRpc("arbitrum_nova");
// testRpc("polygon");
// testRpc("polygon_mumbai");
// testRpc("avalanche");
// testRpc("avalanche_fuji");
// testRpc("bnb_smart_chain");
// testRpc("bnb_smart_chain_testnet");
// testRpc("gnosis_chain");
// }
function testChainNoDefault() public {
vm.expectRevert("StdChains getChain(string): Chain with alias \"does_not_exist\" not found.");
getChain("does_not_exist");
}
function testSetChainFirstFails() public {
vm.expectRevert("StdChains setChain(string,ChainData): Chain ID 31337 already used by \"anvil\".");
setChain("anvil2", ChainData("Anvil", 31337, "URL"));
}
function testChainBubbleUp() public {
setChain("needs_undefined_env_var", ChainData("", 123456789, ""));
vm.expectRevert(
"Failed to resolve env var `UNDEFINED_RPC_URL_PLACEHOLDER` in `${UNDEFINED_RPC_URL_PLACEHOLDER}`: environment variable not found"
);
getChain("needs_undefined_env_var");
}
function testCannotSetChain_ChainIdExists() public {
setChain("custom_chain", ChainData("Custom Chain", 123456789, "https://custom.chain/"));
vm.expectRevert('StdChains setChain(string,ChainData): Chain ID 123456789 already used by "custom_chain".');
setChain("another_custom_chain", ChainData("", 123456789, ""));
}
function testSetChain() public {
setChain("custom_chain", ChainData("Custom Chain", 123456789, "https://custom.chain/"));
Chain memory customChain = getChain("custom_chain");
assertEq(customChain.name, "Custom Chain");
assertEq(customChain.chainId, 123456789);
assertEq(customChain.chainAlias, "custom_chain");
assertEq(customChain.rpcUrl, "https://custom.chain/");
Chain memory chainById = getChain(123456789);
assertEq(chainById.name, customChain.name);
assertEq(chainById.chainId, customChain.chainId);
assertEq(chainById.chainAlias, customChain.chainAlias);
assertEq(chainById.rpcUrl, customChain.rpcUrl);
customChain.name = "Another Custom Chain";
customChain.chainId = 987654321;
setChain("another_custom_chain", customChain);
Chain memory anotherCustomChain = getChain("another_custom_chain");
assertEq(anotherCustomChain.name, "Another Custom Chain");
assertEq(anotherCustomChain.chainId, 987654321);
assertEq(anotherCustomChain.chainAlias, "another_custom_chain");
assertEq(anotherCustomChain.rpcUrl, "https://custom.chain/");
// Verify the first chain data was not overwritten
chainById = getChain(123456789);
assertEq(chainById.name, "Custom Chain");
assertEq(chainById.chainId, 123456789);
}
function testSetNoEmptyAlias() public {
vm.expectRevert("StdChains setChain(string,ChainData): Chain alias cannot be the empty string.");
setChain("", ChainData("", 123456789, ""));
}
function testSetNoChainId0() public {
vm.expectRevert("StdChains setChain(string,ChainData): Chain ID cannot be 0.");
setChain("alias", ChainData("", 0, ""));
}
function testGetNoChainId0() public {
vm.expectRevert("StdChains getChain(uint256): Chain ID cannot be 0.");
getChain(0);
}
function testGetNoEmptyAlias() public {
vm.expectRevert("StdChains getChain(string): Chain alias cannot be the empty string.");
getChain("");
}
function testChainIdNotFound() public {
vm.expectRevert("StdChains getChain(string): Chain with alias \"no_such_alias\" not found.");
getChain("no_such_alias");
}
function testChainAliasNotFound() public {
vm.expectRevert("StdChains getChain(uint256): Chain with ID 321 not found.");
getChain(321);
}
function testSetChain_ExistingOne() public {
setChain("custom_chain", ChainData("Custom Chain", 123456789, "https://custom.chain/"));
assertEq(getChain(123456789).chainId, 123456789);
setChain("custom_chain", ChainData("Modified Chain", 999999999, "https://modified.chain/"));
vm.expectRevert("StdChains getChain(uint256): Chain with ID 123456789 not found.");
getChain(123456789);
Chain memory modifiedChain = getChain(999999999);
assertEq(modifiedChain.name, "Modified Chain");
assertEq(modifiedChain.chainId, 999999999);
assertEq(modifiedChain.rpcUrl, "https://modified.chain/");
}
function testDontUseDefaultRpcUrl() public {
// Should error if default RPCs flag is set to false.
setFallbackToDefaultRpcUrls(false);
vm.expectRevert(
"Failed to get environment variable `ANVIL_RPC_URL` as type `string`: environment variable not found"
);
getChain(31337);
vm.expectRevert(
"Failed to get environment variable `SEPOLIA_RPC_URL` as type `string`: environment variable not found"
);
getChain("sepolia");
}
}