*** Settings ***
Resource    environment/variables.txt 
Library    REST    ${VNFM_SCHEMA}://${VNFM_HOST}:${VNFM_PORT} 
Library     OperatingSystem
Library    JSONLibrary
Library    JSONSchemaLibrary    schemas/
Suite Setup    Check resource existance

*** Test Cases ***
Change deployment flavour of a vnfInstance
    [Documentation]    Changes the deployment flavour of a VNF instance..
    Log    Trying to change the deployment flavour of a VNF instance.
    Set Headers  {"Accept":"${ACCEPT}"}  
    Set Headers  {"Content-Type": "${CONTENT_TYPE}"}
    Run Keyword If    ${AUTH_USAGE} == 1    Set Headers    {"Authorization":"${AUTHORIZATION}"}
    ${body}=    Get File    jsons/changeVnfFlavourRequest.json
    Post    ${apiRoot}/${apiName}/${apiVersion}/vnf_instances/${vnfInstanceId}/change_flavour    ${body}
    Integer    response status    202
    Log    Status code validated
    ${headers}=    Output    response headers
    Should Contain    ${headers}    Location
    Log    Validation OK

Change deployment flavour of a vnfInstance Conflict (Not-Instantiated)
    # TODO: Need to set the pre-condition of the test. VNF instance shall be in INSTANTIATED state
    [Documentation]    Conflict. 
    ...    The operation cannot be executed currently, due to a conflict with the state of the VNF instance resource. 
    ...    Typically, this is due to the fact that the VNF instance resource is in NOT-INSTANTIATED state, 
    ...    or that another lifecycle management operation is ongoing. 
    ...    The response body shall contain a ProblemDetails structure, in which the �detail� attribute should convey more information about the error.
    [Setup]    Check resource not instantiated    ${vnfInstanceId}
    Log    Trying to change the deployment flavour of a VNF instance.
    Set Headers  {"Accept":"${ACCEPT}"}  
    Set Headers  {"Content-Type": "${CONTENT_TYPE}"}
    Run Keyword If    ${AUTH_USAGE} == 1    Set Headers    {"Authorization":"${AUTHORIZATION}"}
    ${body}=    Get File    jsons/changeVnfFlavourRequest.json
    Post    ${apiRoot}/${apiName}/${apiVersion}/vnf_instances/${vnfInstanceId}/change_flavour    ${body}
    Integer    response status    409
    Log    Status code validated
    ${problemDetails}=    Output    response body
    Validate Json    ProblemDetails.schema.json    ${problemDetails}
    Log    Validation OK

    
Change deployment flavour of a vnfInstance Not Found
    # TODO: Need to create a vnfInstance which's instantiatedVnfInfo.scaleStatus is absent
    [Documentation]    Not Found
    ...    Error: The API producer did not find a current representation for the target resource or is not willing to disclose that one exists. 
    ...    Specifically in case of this task resource, the response code 404 shall also returned if the task is not supported for the VNF instance represented by the parent resource, which means that the task resource consequently does not exist. 
    ...    In this case, the response body shall be present, and shall contain a ProblemDetails structure, in which the �detail� attribute shall convey more information about the error.
    [Setup]    Check change flavour not supported
    Log    Trying to change the deployment flavour of a VNF instance, not exist
    Set Headers  {"Accept":"${ACCEPT}"}  
    Set Headers  {"Content-Type": "${CONTENT_TYPE}"}
    Run Keyword If    ${AUTH_USAGE} == 1    Set Headers    {"Authorization":"${AUTHORIZATION}"}
    ${body}=    Get File    jsons/changeVnfFlavourRequest.json
    Post    ${apiRoot}/${apiName}/${apiVersion}/vnf_instances/${vnfInstanceId}/change_flavour    ${body}
    Integer    response status    404
    Log    Status code validated
    ${problemDetails}=    Output    response body
    Validate Json    ProblemDetails.schema.json    ${problemDetails}
    Log    Validation OK
   
    
GET Change deployment flavour VNFInstance - Method not implemented
    log    Trying to perform a GET. This method should not be implemented
    Run Keyword If    ${AUTH_USAGE} == 1    Set Headers    {"Authorization":"${AUTHORIZATION}"}
    Get    ${apiRoot}/${apiName}/${apiVersion}/vnf_instances/${vnfInstanceId}/change_flavour    
    Log    Validate Status code
    Integer    response status    405

PUT Change deployment flavour VNFInstance - Method not implemented
    log    Trying to perform a PUT. This method should not be implemented
    Run Keyword If    ${AUTH_USAGE} == 1    Set Headers    {"Authorization":"${AUTHORIZATION}"}
    Put    ${apiRoot}/${apiName}/${apiVersion}/vnf_instances/${vnfInstanceId}/change_flavour    
    Log    Validate Status code
    Integer    response status    405

PATCH Change deployment flavour VNFInstance - Method not implemented
    log    Trying to perform a PATCH. This method should not be implemented
    Run Keyword If    ${AUTH_USAGE} == 1    Set Headers    {"Authorization":"${AUTHORIZATION}"}
    Patch    ${apiRoot}/${apiName}/${apiVersion}/vnf_instances/${vnfInstanceId}/change_flavour    
    Log    Validate Status code
    Integer    response status    405
    
DELETE Change deployment flavour VNFInstance - Method not implemented
    log    Trying to perform a DELETE. This method should not be implemented
    Run Keyword If    ${AUTH_USAGE} == 1    Set Headers    {"Authorization":"${AUTHORIZATION}"}
    Delete    ${apiRoot}/${apiName}/${apiVersion}/vnf_instances/${vnfInstanceId}/change_flavour    
    Log    Validate Status code
    Integer    response status    405

*** Keywords ***
Check resource existance
    Set Headers    {"Accept":"${ACCEPT}"}  
    Set Headers    {"Content-Type": "${CONTENT_TYPE}"}
    Run Keyword If    ${AUTH_USAGE} == 1    Set Headers    {"Authorization":"${AUTHORIZATION}"}
    Get    ${apiRoot}/${apiName}/${apiVersion}/vnf_instances/${vnfInstanceId} 
    Integer    response status    200

Check resource not instantiated
    [Arguments]    ${instanceId}
    Set Headers    {"Accept":"${ACCEPT}"}  
    Set Headers    {"Content-Type": "${CONTENT_TYPE}"}
    Run Keyword If    ${AUTH_USAGE} == 1    Set Headers    {"Authorization":"${AUTHORIZATION}"}
    Get    ${apiRoot}/${apiName}/${apiVersion}/vnf_instances/${instanceId} 
    String    response body instantiationState    NOT_INSTANTIATED

Check change flavour not supported
    Set Headers    {"Accept":"${ACCEPT}"}  
    Set Headers    {"Content-Type": "${CONTENT_TYPE}"}
    Run Keyword If    ${AUTH_USAGE} == 1    Set Headers    {"Authorization":"${AUTHORIZATION}"}
    Get    ${apiRoot}/${apiName}/${apiVersion}/vnf_instances/${vnfInstanceId} 
    # how to check if change floavour is not supported? "flavourId" doesn't exist?

Launch another LCM operation
    Set Headers  {"Accept":"${ACCEPT}"}  
    Set Headers  {"Content-Type": "${CONTENT_TYPE}"}
    Run Keyword If    ${AUTH_USAGE} == 1    Set Headers    {"Authorization":"${AUTHORIZATION}"}
    ${body}=    Get File    jsons/scaleVnfRequest.json
    Post    ${apiRoot}/${apiName}/${apiVersion}/vnf_instances/${vnfInstanceId}/scale    ${body}
    Integer    response status    202