chore: write a workflow for running tests

.github/workflows/test.yml

@@ -0,0 +1,22 @@
+name: Run Tests
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+    tags:
+      - '*'
+  pull_request:
+
+jobs:
+  test:
+    name: Run Tests
+    steps:
+      - name: git checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Install Nix
+        uses: cachix/install-nix-action@08dcb3a5e62fa31e2da3d490afc4176ef55ecd72 # v30
+      - name: Test
+        run: |
+          nix develop --command run-tests

flake.nix

@@ -0,0 +1,48 @@
+
+{
+  description = "sdk-internal";
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+  };
+  outputs = {
+    self,
+    nixpkgs,
+    ...
+  }: let
+    supportedSystems = ["x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin"];
+    forAllSystemTypes = fn: nixpkgs.lib.genAttrs supportedSystems fn;
+  in {
+    devShells = forAllSystemTypes (system: let
+      pkgs = import nixpkgs {inherit system;};
+    in {
+      default = pkgs.mkShell {
+        inputsFrom = with self.devShells.${system}; [
+          building
+        ];
+      };
+      building = let
+        runBuild = (pkgs.writeScriptBin "run-build" ''
+          cargo build
+        '');
+        runTests = (pkgs.writeScriptBin "run-tests" ''
+          cargo test
+        '');
+      in
+      pkgs.mkShell {
+        buildInputs = [
+          pkgs.rustup
+          pkgs.cargo
+        ];
+        packages = [
+          runBuild
+          runTests
+        ];
+        shellHook = ''
+          rustup default nightly
+        '';
+      };
+    });
+  };
+}
+
+