mirror of
https://github.com/lux-rs/chains.git
synced 2026-10-30 20:53:50 +00:00
Zach Kelling
9513b3697f
These were in luxfi/compute, a private repo whose licence is the same BSD-3-Clause as luxfi/node's. Nothing here needed protecting, and keeping it private broke the public Rust chain builds that reference it. Sibling paths lose a level: the chains sat three deep in compute and sit one deep here. The conformance generator loses a replace naming an absolute path on one machine, and takes luxfi/chains from the proxy. Co-authored-by: Hanzo Dev <[email protected]>
57 lines
2.2 KiB
Rust
57 lines
2.2 KiB
Rust
// SPDX-License-Identifier: BSD-3-Clause-Eco
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// Copyright (C) 2019-2026, Lux Industries Inc. All rights reserved.
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//! The chain's id, which cannot change.
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//!
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//! A vmID is an immutable one-way door: it is baked into the genesis
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//! CreateChainTx, it is the plugin binary's filename, and the P-Chain stores it
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//! forever. So it is written out literally rather than computed — a change to it,
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//! for any reason including an "obviously equivalent" refactor, fails here instead
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//! of silently producing a chain no node can start.
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mod common;
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use lux_fhevm::ids;
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use lux_fhevm::state::vm_id;
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use lux_fhevm::vm::VM_NAME;
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/// F-Chain's vmID in the encoding the node's plugin registry uses. The plugin
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/// binary MUST be installed under exactly this filename; the registry resolves a
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/// CreateChainTx's vmID to an implementation by looking for a file with this name
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/// in the plugin directory.
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const CANONICAL_VM_ID_CB58: &str = "n6sSsSfbpQBrU9sY4R29U6z8VrmnTo2CntW6da4rRS7qmnGdv";
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#[test]
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fn the_vm_id_is_canonical_and_stable() {
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assert_eq!(
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ids::id_string(&vm_id()),
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CANONICAL_VM_ID_CB58,
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"A vmID cannot change after a chain is created with it. If this is an\n\
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intentional pre-launch change, every declaration must move together:\n\
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\x20 luxfi/constants vm_ids.go FHEVMID\n\
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\x20 node/node vms.go OptionalVMs\n\
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\x20 chains/fhevm factory.go, cmd/plugin/main.go, and its test\n\
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\x20 chains/rust/fhevm state.rs vm_id, and this test"
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);
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assert_ne!(vm_id(), ids::EMPTY, "the vmID is not the empty id");
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}
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/// The bytes themselves, spelled out: an ASCII name left-padded into 32 bytes.
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#[test]
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fn the_vm_id_is_the_name_padded_into_thirty_two_bytes() {
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let mut want = ids::EMPTY;
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want[..5].copy_from_slice(b"fhevm");
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assert_eq!(vm_id(), want);
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assert_eq!(VM_NAME, "fhevm");
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assert_eq!(&vm_id()[..VM_NAME.len()], VM_NAME.as_bytes());
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}
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/// M-Chain and F-Chain were split out of the retired threshold VM. They are
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/// separate chains and must never share an id.
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#[test]
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fn the_vm_id_does_not_collide_with_the_chain_it_was_split_from() {
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let mut mpc = ids::EMPTY;
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mpc[..5].copy_from_slice(b"mpcvm");
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assert_ne!(vm_id(), mpc);
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}
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