edbaeb9813
Advantages: - Pure test evaluations - The test framework can now be used by flakes that extend nix-bitcoin - Most features of `run-tests.sh` are now accessible via `nix build`/`nix run`. We keep `run-tests.sh` for advanced features like `scenarioOverridesFile` and adhoc scenarios. Other changes: - `run-tests.sh` now builds aggregate VM tests like `basic` or `buildable` by creating all VMs in a single evaluation. This speeds up the tests and eases debugging by separating the eval and build steps. - Use the new `nix` CLI which has improved build output logging by prefixing output lines with the origin drv name.
119 lines
4.1 KiB
Markdown
119 lines
4.1 KiB
Markdown
## Examples
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The easiest way to try out nix-bitcoin is to use one of the provided examples.
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### Flakes-based quick start
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If you use a Flakes-enabled version of Nix, run the following command to start a minimal
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nix-bitcoin QEMU VM:
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```bash
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nix run github:fort-nix/nix-bitcoin/release
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```
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The VM (defined in [flake.nix](../flake.nix)) runs in the terminal and has `bitcoind`
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and `clightning` installed.\
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It leaves no traces (outside of `/nix/store`) on the host system.
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### More examples
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Clone this repo and enter the examples shell:
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```bash
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git clone https://github.com/fort-nix/nix-bitcoin
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cd nix-bitcoin/examples/
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nix-shell
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```
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The following example scripts set up a nix-bitcoin node according to [`configuration.nix`](configuration.nix) and then
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shut down immediately. They leave no traces (outside of `/nix/store`) on the host system.\
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By default, [`configuration.nix`](configuration.nix) enables `bitcoind` and `clightning`.
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- [`./deploy-container.sh`](deploy-container.sh) creates a [NixOS container](https://github.com/erikarvstedt/extra-container).\
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This is the fastest way to set up a node.\
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Requires: [Nix](https://nixos.org/), a systemd-based Linux distro and root privileges
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- [`./deploy-qemu-vm.sh`](deploy-qemu-vm.sh) creates a QEMU VM.\
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Requires: [Nix](https://nixos.org/nix/), Linux
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- [`./deploy-krops.sh`](deploy-krops.sh) creates a QEMU VM and deploys a
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nix-bitcoin configuration to it using [krops](https://github.com/krebs/krops).\
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Requires: [Nix](https://nixos.org/nix/), Linux
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- [`./deploy-container-minimal.sh`](deploy-container-minimal.sh) creates a
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container defined by [importable-configuration.nix](importable-configuration.nix).\
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You can copy and import this file to use nix-bitcoin in an existing NixOS configuration.\
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The configuration doesn't use the [secure-node.nix](../modules/presets/secure-node.nix) preset.\
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Requires: [Nix](https://nixos.org/), a systemd-based Linux distro and root privileges
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Run the examples with option `--interactive` or `-i` to start a shell for interacting with
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the node:
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```bash
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./deploy-qemu-vm.sh -i
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```
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### Tests
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The internal test suite is also useful for exploring features.\
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The following `run-tests.sh` commands leave no traces (outside of `/nix/store`) on
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the host system.
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`run-tests.sh` requires Nix >= 2.10.
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```bash
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git clone https://github.com/fort-nix/nix-bitcoin
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cd nix-bitcoin/test
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# Run a node in a VM. No tests are executed.
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./run-tests.sh vm
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systemctl status bitcoind
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# Run a Python test shell inside a VM node
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./run-tests.sh debug
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print(succeed("systemctl status bitcoind"))
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run_test("bitcoind")
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# Run a node in a container. Requires systemd and root privileges.
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./run-tests.sh container
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c systemctl status bitcoind
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# Explore a single feature
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./run-tests.sh --scenario electrs container
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# Run a command in a container
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./run-tests.sh --scenario '{
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services.clightning.enable = true;
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nix-bitcoin.nodeinfo.enable = true;
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}' container --run c nodeinfo
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```
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See [`run-tests.sh`](../test/run-tests.sh) for a complete documentation.
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#### Flakes
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Tests can also be directly accessed via Flakes:
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```bash
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# Build test
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nix build --no-link ..#tests.default
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# Run a node in a VM. No tests are executed.
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nix run ..#tests.default.vm
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# Run a Python test shell inside a VM node
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nix run ..#tests.default.run -- --debug
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# Run a node in a container. Requires extra-container, systemd and root privileges
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nix run ..#tests.default.container
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nix run ..#tests.default.containerLegacy # For NixOS with `system.stateVersion` <22.05
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# Run a command in a container
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nix run ..#tests.default.container -- --run c nodeinfo
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nix run ..#tests.default.containerLegacy -- --run c nodeinfo # For NixOS with `system.stateVersion` <22.05
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```
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### Real-world example
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Check the [server repo](https://github.com/fort-nix/nixbitcoin.org) for https://nixbitcoin.org
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to see the configuration of a nix-bitcoin node that's used in production.
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The commands in `shell.nix` allow you to locally run the node in a VM or container.
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### Flakes
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Flakes make it easy to include `nix-bitcoin` in an existing NixOS config.
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The [flakes example](./flakes/flake.nix) shows how to use `nix-bitcoin` as an input to a system flake.
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