not able to delete test cases in azure devops through powershell scripts - azure

Question

I have checked How to delete multiple test cases in Azure DevOps
It not works for me.
Using PowerShell scripts alone, I want to delete multiple test cases in one go in Azure DevOps. Currently, portal only allows to delete one at a time.
I have tried like below way, and throws exceptions.
$url = "https://dev.azure.com/testarulmouzhie/testDemo_Project/_apis/test/testcases/21?api-version=5.0-preview.1"
Invoke-RestMethod -Uri $url -Method Delete -ContentType application/json
it throws error like below one-
Even tried with the new api version, same error comes-
$url = "https://dev.azure.com/testarulmouzhie/testDemo_Project/_apis/test/testcases/21?api-version=5.1-preview.1"
Invoke-RestMethod -Uri $url -Method Delete -ContentType application/json
Attached the error for ref-
Invoke-RestMethod :
Azure DevOps
Service Status Support #AzureDevOps
At line:1 char:1
+ Invoke-RestMethod -Uri $url -Method Delete -ContentType application/json
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-RestMethod], WebExc
eption
+ FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeRestMethodCommand
Can anyone help to solve this?
Thanks in advance.
For ref, anyway simple GET rest api calls works fine. i have tried below one and those are working fine.
$AzureDevOpsPAT = "a2wzly2bsirXXXXXXXXXXXXXXXXXXXXXXXXXXX"
$OrganizationName = "testarulmouzhie"
$AzureDevOpsAuthenicationHeader = #{Authorization = 'Basic ' + [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes(":$($AzureDevOpsPAT)")) }
$UriOrga = "https://dev.azure.com/$($OrganizationName)/"
$uriAccount = $UriOrga + "_apis/projects?api-version=5.1"
Invoke-RestMethod -Uri $uriAccount -Method get -Headers $AzureDevOpsAuthenicationHeader
Even used fiddler and tried to capture error logs- attached those too

Answer 1

not able to delete test cases in azure devops through powershell scripts
It seems you do not have the Test Plans license to use the REST API Test Cases - Delete.
Azure Test Plans uses an access level called Basic + Test Plans, you need a Basic + Test Plans license to manage the test plans and test suites, etc. Please check the following link:
Manual test permissions and access
Here are two ways of ensuring you have the right license.
1) The user is assigned a test manager extension license - https://marketplace.visualstudio.com/items?itemName=ms.vss-testmanager-web
2) The user has a VS Enterprise or Test Professional subscription
You can do this by accessing test hub and trying to add test cases directly there with the same user (account create the PAT)as is used in the REST API.
Check this thread for some details.
Hope this helps.

Answer 2

Ah I think you have missed your the autorizationheader in your delete Invoke API
Please include the -Headers $AzureDevOpsAuthenicationHeader like below
--give below your pat access token
$AzureDevOpsPAT = "ukcvd42u5rXXXXXXXXXXXXXXXXXXX";
$AzureDevOpsAuthenicationHeader = #{Authorization = 'Basic ' + [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes(":$($AzureDevOpsPAT)")) };
$url = "https://dev.azure.com/testarulmouzhie/testDemo_Project/_apis/test/testcases/21?api-version=5.0-preview.1"
Invoke-RestMethod -Uri $url -Method Delete -ContentType application/json -Headers $AzureDevOpsAuthenicationHeader;
As Leo suggested it also maybe with the license, so how to check your license for the test cases?