如何为KRB5配置相关场景编写RobotFramework测试用例

以下是针对KRB5配置场景编写的RobotFramework测试用例，覆盖三种核心验证场景：

*** Settings ***
Documentation    验证KRB5配置在mmnfs/mmconfig变更操作下的行为一致性
Library          OperatingSystem
Library          String

*** Test Cases ***
场景1：空KRB5 Stanza执行配置变更后自动移除
    [Documentation]    当配置文件中存在空的KRB5 stanza时，执行mmnfs config change操作后，该空stanza应被移除
    # 前置准备：备份原配置文件
    ${config_path}=    Set Variable    /etc/krb5.conf
    ${backup_path}=    Set Variable    ${config_path}.bak
    Run    cp ${config_path} ${backup_path}

    # 步骤1：向配置文件添加空的KRB5 stanza
    Run    echo -e "\n[krb5_stanza]" >> ${config_path}

    # 步骤2：执行mmnfs配置变更操作
    Run    mmnfs config change --sample-option sample-value

    # 步骤3：验证空KRB5 stanza已被移除
    ${grc}=    Run And Return Rc    grep -q "\[krb5_stanza\]" ${config_path}
    Should Be Equal As Integers    ${grc}    1    # grep未匹配到内容返回1，说明空stanza已被移除

    # 清理操作：恢复原配置
    Run    mv ${backup_path} ${config_path}

场景2：有效KRB5 Stanza执行配置变更后保留
    [Documentation]    当配置文件中存在有效的KRB5 stanza时，执行任意mmconfig change操作后，该stanza不应被移除
    ${config_path}=    Set Variable    /etc/krb5.conf
    ${backup_path}=    Set Variable    ${config_path}.bak
    Run    cp ${config_path} ${backup_path}

    # 步骤1：向配置文件添加有效的KRB5 stanza
    ${valid_stanza}=    Catenate
    ...    [krb5_stanza]
    ...        kdc = kdc.test-domain.com
    ...        admin_server = admin.test-domain.com
    ...        default_realm = TEST-DOMAIN.COM
    Run    echo -e "\n${valid_stanza}" >> ${config_path}

    # 步骤2：执行任意mmconfig配置变更操作
    Run    mmconfig change --another-option another-value

    # 步骤3：验证有效KRB5 stanza仍存在
    ${stanza_content}=    Run And Return Output    grep -A 3 "\[krb5_stanza\]" ${config_path}
    Should Contain    ${stanza_content}    kdc = kdc.test-domain.com
    Should Contain    ${stanza_content}    admin_server = admin.test-domain.com
    Should Contain    ${stanza_content}    default_realm = TEST-DOMAIN.COM

    # 清理操作：恢复原配置
    Run    mv ${backup_path} ${config_path}

场景3：无KRB5 Stanza执行配置变更后不生成空stanza
    [Documentation]    当配置文件中无KRB5 stanza时，执行mmnfs config change操作后，不应创建空的KRB5 stanza
    ${config_path}=    Set Variable    /etc/krb5.conf
    ${backup_path}=    Set Variable    ${config_path}.bak
    Run    cp ${config_path} ${backup_path}

    # 步骤1：确保配置文件中无KRB5 stanza
    Run    sed -i '/\[krb5_stanza\]/d' ${config_path}

    # 步骤2：执行mmnfs配置变更操作
    Run    mmnfs config change --test-option test-value

    # 步骤3：验证未生成空的KRB5 stanza
    ${grc}=    Run And Return Rc    grep -q "\[krb5_stanza\]" ${config_path}
    Should Be Equal As Integers    ${grc}    1    # grep未匹配到内容返回1，说明未创建空stanza

    # 清理操作：恢复原配置
    Run    mv ${backup_path} ${config_path}

内容的提问来源于stack exchange，提问作者Gopalakrishna R M