tsunagiandClaude Opus 5
637e2f74e4
Leaving was the only way out of a network, and it is the irreversible one: it publishes a release and then removes the configuration, the secret, the network's signed records, its cached hints and the protocol key it used. What somebody usually wants before a reboot, a trip or an experiment is the other thing — stop serving it and keep everything. `tsunagi network stop <id>` closes that network's sessions, takes its address off the interface and keeps it from starting again. Nothing is announced, deliberately: to the others this device is away, which is an ordinary condition they already handle, and the address and name it holds stay reserved for it. `tsunagi network start <id>` resumes it where it left off. Both are remembered, so a restart does what the last instruction said rather than what the last command line happened to say. Except when the command line says otherwise: `up --network X` starts X whatever its stored state, because a command naming a network is an instruction to run it. The banner now says which of the three happened — `new`, `already here`, or `was stopped; this command starts it` — since silently, that is a stop that comes back from the dead with nothing to explain it. The listing tells the three states apart too: running with its address, stopped and kept, or configured and waiting for an agent to start. Each row says what to type to move it, because "stop" and "leave" are a pair that has to be easy to tell apart before the irreversible one is typed. The local control protocol is 11. Covered end to end against a running agent: stopping leaves it configured and says so, stopping twice is the state asked for rather than an error, starting brings it back, and the secret afterwards is the one from before — so it is the same network and not a lookalike. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
118 lines
7.8 KiB
Markdown
118 lines
7.8 KiB
Markdown
# Testing
|
|
|
|
How to run everything is in [../README.md](../README.md). Rules for writing
|
|
tests are in [../AGENTS.md](../AGENTS.md).
|
|
|
|
## Ground rules
|
|
|
|
Tests use real iroh endpoints on loopback, real handshakes, real SQLite in
|
|
per-test temporary directories, and independent agent instances. Discovery is
|
|
substitutable; **iroh, authentication, message passing and persistent storage
|
|
are not**.
|
|
|
|
The suite runs with no internet, no DHT, no public relay, no administrator
|
|
rights and no changes to OS network settings: endpoints bind `127.0.0.1:0` and
|
|
`[::1]:0`, relays are disabled, address lookup is cleared, port mapping is
|
|
disabled, and net-report probing is reduced to its minimum.
|
|
|
|
Synchronisation is always "wait for a specific event or condition under one
|
|
overall deadline" (`wait_event`, `wait_until`, 30 s). The deadline covers the
|
|
probe as well as the gaps between probes: a call into a wedged agent that
|
|
never answers fails the test rather than hanging the process, which is the
|
|
difference between a red run and a test binary still burning a core the next
|
|
day. `settle()` exists only for asserting that something did *not* happen.
|
|
Ports are dynamic and directories are isolated, so tests run in parallel.
|
|
|
|
Several library instances in one process is exactly that. It is **not** a test
|
|
of several system processes, and is not presented as one.
|
|
|
|
## What is covered
|
|
|
|
| # | scenario | file |
|
|
|---|---|---|
|
|
| 1 | deterministic identity: same name + secret ⇒ same space on different devices; a changed name or secret changes it; hostname, device key and restart do not | `tests/identity.rs` |
|
|
| 2 | four agents find each other, authenticate for real and exchange distinguishable messages; a late joiner is picked up; opaque plugin capabilities cross the control plane | `tests/multi_peer.rs` |
|
|
| 3 | an attacker who knows the address and the correct public `NetworkId` but not the secret is rejected at the handshake | `tests/authentication.rs` |
|
|
| 4 | one agent in two networks: statuses and messages do not mix; a session authenticated for one network cannot speak for the other; deactivating one leaves the other running | `tests/network_isolation.rs` |
|
|
| 5 | full stop and recreation from the same database: identity and settings survive, sessions come back automatically, a new local UDP port does not break recovery | `tests/restart.rs` |
|
|
| 6 | changing the secret through the library API: device identity survives, old sessions and messages get no access to the new space, and the retired space stays retired across a restart | `tests/restart.rs` |
|
|
| 7 | missing, corrupt and stale cache do not prevent connecting; a corrupt mandatory store is a clear error and never a fresh identity; a newer schema is refused; secrets stay out of status and `Debug` | `tests/cache_and_state.rs` |
|
|
| 8 | a dead candidate and a vanished peer do not block the others; retries are bounded and stop when the network is deactivated | `tests/resilience.rs` |
|
|
| 9 | wrong version, a message before authentication, a proof replayed on another connection, an oversized frame and a `Hello` for an inactive network are all rejected without taking the agent down | `tests/authentication.rs` |
|
|
| 10 | a second agent on the same state directory gets a clear error; after a clean stop the directory reopens; shutdown ends background tasks and refuses further work; independent agents coexist in one process | `tests/resilience.rs` |
|
|
| 11 | leaving a network frees the address for the others, says plainly when there was nobody to tell, and rejoining afterwards is not mistaken for a stale record; a wipe empties both directories and the next start is a stranger, while a directory that is not ours is refused | `tests/leaving.rs`, `tests/cache_and_state.rs` |
|
|
| 12 | a network can be joined into a running agent over the control socket and is live at once; a name with no secret resumes the one network of that name, invents one when there is none, and refuses to choose between two; two networks on one agent each get a range of their own | `tests/local_control.rs`, `tests/network_isolation.rs`, CLI unit tests |
|
|
|
|
`tests/wireguard.rs` drives the WireGuard data plane over real iroh
|
|
connections. Everything is real except the packet interface: real agents, real
|
|
control plane, real data links, real WireGuard handshakes and encryption from
|
|
boringtun, with an in-memory TUN device so none of it needs privileges. It
|
|
covers real IPv6 packets travelling both ways through a tunnel, a three-agent
|
|
mesh, a peer that sends from an address it does not own being dropped, packets
|
|
for unowned addresses being counted rather than broadcast, a departing peer
|
|
losing its tunnel, two networks keeping separate interfaces and keys, restart
|
|
keeping the WireGuard identity, shutdown removing every interface, a forged
|
|
overlay claim being rejected, and the core carrying the payload without
|
|
interpreting it.
|
|
|
|
Unit tests in `crates/tsunagi/src/state/` cover the signed record model directly: tampering
|
|
with any field breaks verification, a newer version wins while an older one
|
|
never rolls back, two authors claiming one address resolve the same way no
|
|
matter the merge order, one key used in two places is reported rather than
|
|
silently merged, a release survives a late-arriving old claim, a bad record in
|
|
a batch does not stop the rest, and allocation is deterministic, spread out,
|
|
walks past everything taken and reports a full range instead of handing out a
|
|
duplicate.
|
|
|
|
`tests/local_control.rs` covers the local control socket end to end: a client
|
|
asking a running agent for status over a real Unix socket, joining and
|
|
leaving a network through it, a leftover socket file being replaced while a
|
|
live one is not, and the derived socket path staying short enough to bind.
|
|
|
|
`crates/tsunagi-cli/tests/network_cli.rs` runs the real binary too: joining
|
|
with no secret invents one, prints it in full and prints a line the other
|
|
side can paste unchanged; a bare name this device already knows resumes
|
|
that network instead of inventing another of the same name; and a network
|
|
can be stopped and started again with its secret and its place intact.
|
|
|
|
`crates/tsunagi-cli/tests/dns_service.rs` runs the real binary: the resolver
|
|
comes up with no interface to attach it to, the listener is not rebuilt on
|
|
the way past, a name outside every zone is refused, each network gets a zone
|
|
of its own as it is joined, and the resolver can be switched on and off
|
|
while the agent runs.
|
|
|
|
`tests/discovery.rs` covers the discovery contract itself: a static bootstrap
|
|
candidate is enough to join, several backends compose, entries are withdrawn
|
|
when a network stops, and a forgotten network stays forgotten across a restart.
|
|
|
|
Unit tests in `crates/tsunagi/src/proto/handshake.rs` cover the transcript construction
|
|
itself: role separation, channel binding, identity and network binding,
|
|
unambiguous encoding, and rejection under the wrong key.
|
|
|
|
Unit tests in `crates/tsunagi-wg-quic/src/` cover key clamping against the RFC
|
|
7748 vector, overlay derivation, announcement validation including the
|
|
address-hijack attempt, interface naming, and IP header parsing against
|
|
truncated and nonsense input.
|
|
|
|
`tests/end_to_end.rs` is the vertical slice: persistent identity → network
|
|
space → discovery → iroh → authentication → message exchange.
|
|
|
|
What the default suite does **not** cover is the real TUN interface, because
|
|
that needs `CAP_NET_ADMIN`. Everything above it does run.
|
|
|
|
## Not covered, and not claimed to be
|
|
|
|
Listed in [sync-model.md](sync-model.md#future-tests): snapshots, revocations,
|
|
long partitions, hostname renames, recovery of a returning participant, NAT
|
|
traversal, relay fallback, and multi-process or multi-host deployment. None of
|
|
these are implemented, and none are marked as passing.
|
|
|
|
## Debugging a test
|
|
|
|
```bash
|
|
TSUNAGI_TEST_LOG=tsunagi=debug cargo test --test multi_peer -- --nocapture
|
|
```
|
|
|
|
The library never installs a global subscriber; the harness opts in only when
|
|
that variable is set.
|