{"load_density": [
  ["LD_register_variables", {"variables": {"base": "https://httpbin.org"}}],
  ["LD_start_test", {
    "user_detail_dict": {"user": "fast_http_user"},
    "user_count": 10,
    "spawn_rate": 5,
    "test_time": 15,
    "tasks": [
      {"method": "get",  "request_url": "${var.base}/get"},
      {"method": "post", "request_url": "${var.base}/post",
       "json": {"hello": "world"},
       "assertions": [{"type": "status_code", "value": 200}]}
    ]
  }],
  ["LD_generate_summary_report", {"report_name": "quick_smoke"}]
]}