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# Shadow-based integration test
This is an integration test for arti that uses the
[shadow](https://shadow.github.io/) simulator. It creates a simulation of a
small Tor network, uses the `arti` client to perform some transfers across this
simulated network, and validates that the transfers succeeded.
## Running locally
To run locally, you'll need to install shadow itself somewhere on our `PATH`,
following [shadow's installation
instructions](https://shadow.github.io/docs/guide/supported_platforms.html).
Next you'll need to install executables that will run inside the simulation, in the
locations where [`shadow.yaml`](./shadow.yaml) expects to find them.
* Ensure [`tgen`](https://github.com/shadow/tgen/) is on your PATH.
* Ensure [`tor`](https://gitlab.torproject.org/tpo/core/tor) is on your PATH.
Typically you can install it using your host system's package manager.
* Build an `arti` client with some extra features enabled such that the binary
ends up at `../../target/x86_64-unknown-linux-gnu/debug/arti-extra`. In the CI
this done in job `rust-latest-arti-extra-features` with the invocation:
```shell
$ cargo build --verbose \
--target x86_64-unknown-linux-gnu \
-p arti -p tor-circmgr \
--bin arti \
--features full,experimental-api,arti-client/keymgr,tor-circmgr/ntor_v3,onion-service-service
$ mv target/x86_64-unknown-linux-gnu/debug/arti target/x86_64-unknown-linux-gnu/debug/arti-extra
```
* Build a "vanilla" `arti` client so that the binary is at:
`../../target/x86_64-unknown-linux-gnu/debug/arti`. In the CI this is done in
job `rust-latest` with the invocation:
```shell
$ cargo build --locked --verbose --target x86_64-unknown-linux-gnu -p arti
```
Once those are installed, you can invoke the [`run.sh`](./run.sh) script from
this directory.
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