dbx/packages/plugin-cli/tests/dev-launcher.test.mjs

import test from "node:test";
import assert from "node:assert/strict";
import { spawnSync } from "node:child_process";
import { mkdtempSync, writeFileSync, rmSync } from "node:fs";
import { tmpdir } from "node:os";
import { dirname, resolve, join } from "node:path";
import { fileURLToPath } from "node:url";
const root = resolve(dirname(fileURLToPath(import.meta.url)), "..");
test("dev selects the bundled runtime and current Node without changing ordinary launcher behavior", () => {
  const cwd = mkdtempSync(join(tmpdir(), "dbx-dev-launcher-"));
  try {
    writeFileSync(join(cwd, "dev"), "console.log(JSON.stringify({runtime:process.env.DBX_PLUGIN_DEV_RUNTIME,node:process.env.DBX_PLUGIN_NODE,args:process.argv.slice(2)}))");
    const invoke = (extra) =>
      spawnSync(process.execPath, [join(root, "bin/dbx-plugin.js"), "dev", "--port", "5190"], {
        cwd,
        encoding: "utf8",
        env: { ...process.env, DBX_PLUGIN_CLI_BINARY: process.execPath, DBX_PLUGIN_NODE: "", DBX_PLUGIN_DEV_RUNTIME: "", ...extra },
      });
    const result = invoke({});
    assert.equal(result.status, 0, result.stderr);
    const data = JSON.parse(result.stdout);
    assert.equal(data.runtime, join(root, "dev-runtime/runtime.mjs"));
    assert.equal(data.node, process.execPath);
    assert.deepEqual(data.args, ["--port", "5190"]);
    const explicit = invoke({ DBX_PLUGIN_DEV_RUNTIME: "/custom/runtime.mjs", DBX_PLUGIN_NODE: "/custom/node" });
    assert.equal(JSON.parse(explicit.stdout).runtime, "/custom/runtime.mjs");
  } finally {
    rmSync(cwd, { recursive: true, force: true });
  }
});