这个测试用例需要根据具体的普罗米修斯 metrics请求体格式来编写，以下是一个简单的示例：
*** Test Cases *** | Verify Prometheus Metrics Request Body Format | | \({request_body}= Create Dictionary metric_name=cpu_usage query=avg(cpu_usage) by (instance) time_range=1h | | \){required_keys}= Create List metric_name query | | Run Keyword If ‘\({request_body.keys()}' != '\){required_keys}’ Fail Missing required key(s) in request body: “\({set(required_keys)-set(request_body.keys())}" | | \){query_string}= Set Variable ‘?’ | | :FOR \({key} IN @{request_body.keys()} | | \ \){value}= Get From Dictionary \({request_body} \){key} | | \ Append To Variable \({query_string} \){key}=\({value}& | | END | | Should End With \){query_string} ‘&’
