import assert from "node:assert/strict";
import test from "node:test";

import { selectInstanceValue } from "./model.mjs";

test("indexed simulator identity selection uses explicit HWLAB_INSTANCE_INDEX", () => {
  assert.equal(
    selectInstanceValue("boxsimu_1,boxsimu_2", "fallback", {
      index: "1",
      hostname: "deployment-shaped-pod",
      requireIndexForMultiple: true,
      label: "HWLAB_BOX_ID"
    }),
    "boxsimu_2"
  );
});

test("indexed simulator identity selection uses StatefulSet hostname ordinal", () => {
  assert.equal(
    selectInstanceValue("res_boxsimu_1,res_boxsimu_2", "fallback", {
      index: "",
      hostname: "hwlab-box-simu-1",
      requireIndexForMultiple: true,
      label: "HWLAB_BOX_RESOURCE_ID"
    }),
    "res_boxsimu_2"
  );
});

test("multi-value simulator identities fail closed without an instance index", () => {
  assert.throws(
    () =>
      selectInstanceValue("gwsimu_1,gwsimu_2", "fallback", {
        index: "",
        hostname: "hwlab-gateway-simu-random-suffix",
        requireIndexForMultiple: true,
        label: "HWLAB_GATEWAY_ID"
      }),
    /HWLAB_GATEWAY_ID declares 2 indexed values/u
  );
});

test("single simulator identity value still works without an index", () => {
  assert.equal(
    selectInstanceValue("boxsimu_1", "fallback", {
      index: "",
      hostname: "deployment-shaped-pod",
      requireIndexForMultiple: true,
      label: "HWLAB_BOX_ID"
    }),
    "boxsimu_1"
  );
});