in action.ps1 the test_results_path is available as an input option. If it is provided, then it looks for result_clixml_path :
$test_results_path = $inputs.test_results_path
if ($test_results_path) {
Write-ActionInfo "Test Results Path provided as input; skipping Pester tests"
$result_clixml_path = Get-ActionInput result_clixml_path
if ($result_clixml_path) {
$script:pesterResult = Import-Clixml $result_clixml_path
Write-ActionInfo "Pester Result CLIXML provided as input; loaded"
}
}
However, in action.yml, result_clixml_path is not listed in inputs: