test: add smoke tests

Makefile

@@ -18,3 +18,6 @@ $(PRE_COMMIT_HOOK):
 	poetry run pre-commit install --install-hooks
 
 setup-development-environment: install-poetry $(PRE_COMMIT_HOOK)
+
+test-smoke:
+	k6 run tests/*.smoke.js

tests/default.smoke.js

@@ -0,0 +1,13 @@
+import http from "k6/http";
+import { check } from "k6";
+
+export default function () {
+  const payload = JSON.stringify({
+    prompt: "def binarySearch(arr, left, right, x):\n    mid = (left +",
+  });
+  const headers = { "Content-Type": "application/json" };
+  const res = http.post("http://localhost:5000/v1/completions", payload, {
+    headers,
+  });
+  check(res, { success: (r) => r.status === 200 });
+}