对metrics功能测试robotframework怎么写-Go服务器开发

在测试 Metrics 功能时，可以使用 Robot Framework 编写如下的测试用例：

*** Settings ***
Documentation    Test Metrics Functionality
Library          RequestsLibrary

*** Variables ***
${base_url}      http://localhost:8080  # metrics API 的基本 URL
${timeout}       10s                    # 请求超时时间

*** Test Cases ***
Get Metrics Data
    [Tags]    Metrics
    Given the metrics API is available and running
    When I get the metrics data from "${base_url}/metrics"
    Then the response status code should be 200 OK
    And the response content should contain "process_cpu_seconds_total"
    And the response content should contain "http_requests_total"

*** Keywords ***
Given the metrics API is available and running
    Wait until keyword succeeds     ${timeout}     1s     Check Service Availability

Check Service Availability
    [Arguments]   ${url}
    ${resp}=      Get Request         ${url}
    Should Be Equal As Strings       ${resp.status_code}     200     Failed to connect to service: ${url}

When I get the metrics data from "${url}"
    [Arguments]   ${url}
    ${resp}=      Get Request         ${url}
    
Then the response status code should be 200 OK
    [Arguments]   ${resp}
    Should Be Equal As Strings       ${resp.status_code}     200     Unexpected status code returned: {${resp.status_code}}

And the response content should contain "${expected}"
    [Arguments]   ${resp}        ${expected}
    Should Contain String          ${resp.content.decode()}       ${expected}

这个测试用例会通过 HTTP GET 请求获取 Metrics 数据，并检查响应状态码、响应内容是否包含指定的数据项。如果响应状态码不是 200，或者响应内容中不包含指定的数据项，则测试失败。

这里用到了 RequestsLibrary 库来发送 HTTP 请求和解析响应。其中，Given the metrics API is available and running 和 Check Service Availability 是自定义的关键字，用于检查 Metrics API 是否可用和是否可以连接到指定的服务。