win_scheduled_task: Added frequency: once and check_mode support (#22611)

* win_scheduled_task: Added frequency: once and check_mode support

This patch includes:
- Renamed `execute:` parameter to `executable:`
- Renamed `argument:` parameter to `arguments:`
- Implemented `frequency: once` support
- Implemented check_mode support
- Fix idempotency issue related to empty description
- Added integration tests

* Improve the integration test structure

I think this is a great way to test normal mode and check-mode from the same playbook.

* Small fixes after review

lib/ansible/modules/windows/win_scheduled_task.ps1

@@ -22,47 +22,35 @@ $ErrorActionPreference = "Stop"
 # WANT_JSON
 # POWERSHELL_COMMON
 
-$params = Parse-Args $args;
-
-$days_of_week = Get-AnsibleParam $params -name "days_of_week"
-$enabled = Get-AnsibleParam $params -name "enabled" -default $true
-$enabled = $enabled | ConvertTo-Bool
-$description = Get-AnsibleParam $params -name "description" -default " "
-$path = Get-AnsibleParam $params -name "path" -type "path"
-$argument = Get-AnsibleParam $params -name "argument"
-
-$result = New-Object PSObject;
-Set-Attr $result "changed" $false;
-
-#Required vars
-$name = Get-AnsibleParam -obj $params -name name -failifempty $true -resultobj $result
-$state = Get-AnsibleParam -obj $params -name state -failifempty $true -resultobj $result -validateSet "present","absent"
-
-#Vars conditionally required
-$present_args_required = $state -eq "present"
-$execute = Get-AnsibleParam -obj $params -name execute -failifempty $present_args_required  -resultobj $result
-$frequency = Get-AnsibleParam -obj $params -name frequency -failifempty $present_args_required -resultobj $result
-$time = Get-AnsibleParam -obj $params -name time -failifempty $present_args_required -resultobj $result
-$user = Get-AnsibleParam -obj $params -name user -failifempty $present_args_required -resultobj $result
-
-
-# Mandatory Vars
-if ($frequency -eq "weekly")
-{
-    if (!($days_of_week))
-    {
-        Fail-Json $result "missing required argument: days_of_week"
-    }
+$result = @{
+    changed = $false
 }
 
-if ($path)
-{
-  $path = "\{0}\" -f $path
-}
-else
-{
-  $path = "\"  #default
-}
+$params = Parse-Args $args -supports_check_mode $true
+$check_mode = Get-AnsibleParam -obj $params -name "_ansible_check_mode" -type "bool" -default $false
+
+$arguments = Get-AnsibleParam -obj $params -name "arguments" -type "str" -aliases "argument"
+$description = Get-AnsibleParam -obj $params -name "description" -type "str" -default "No description."
+$enabled = Get-AnsibleParam -obj $params -name "enabled" -type "bool" -default $true
+# TODO: We do not create the TaskPath if missing
+$path = Get-AnsibleParam -obj $params -name "path" -type "str" -default '\'
+
+# Required vars
+$name = Get-AnsibleParam -obj $params -name "name" -type "str" -failifempty $true
+$state = Get-AnsibleParam -obj $params -name "state" -type "str" -default "present" -validateset "present","absent"
+
+# Vars conditionally required
+$present = $state -eq "present"
+$executable = Get-AnsibleParam -obj $params -name "executable" -type "str" -aliases "execute" -failifempty $present
+$frequency = Get-AnsibleParam -obj $params -name "frequency" -type "str" -validateset "once","daily","weekly" -failifempty $present
+$time = Get-AnsibleParam -obj $params -name "time" -type "str" -failifempty $present
+
+# TODO: We should default to the current user
+$user = Get-AnsibleParam -obj $params -name "user" -type "str" -failifempty $present
+
+$weekly = $frequency -eq "weekly"
+$days_of_week = Get-AnsibleParam -obj $params -name "days_of_week" -type "str" -failifempty $weekly
+
 
 try {
     $task = Get-ScheduledTask -TaskPath "$path" | Where-Object {$_.TaskName -eq "$name"}
@@ -85,7 +73,9 @@ try {
         $exists = $true
     }
     elseif ( ($measure.count -eq 0) -and ($state -eq "absent") ){
-        Set-Attr $result "msg" "Task does not exist"
+        # Nothing to do
+        $result.exists = $false
+        $result.msg = "Task does not exist"
         Exit-Json $result
     }
     elseif ($measure.count -eq 0){
@@ -96,10 +86,13 @@ try {
         Fail-Json $result "$($measure.count) scheduled tasks found"
     }
 
-    Set-Attr $result "exists" "$exists"
+    $result.exists = $exists
 
     if ($frequency){
-        if ($frequency -eq "daily") {
+        if ($frequency -eq "once") {
+            $trigger = New-ScheduledTaskTrigger -Once -At $time
+        }
+        elseif ($frequency -eq "daily") {
             $trigger = New-ScheduledTaskTrigger -Daily -At $time
         }
         elseif ($frequency -eq "weekly"){
@@ -110,53 +103,57 @@ try {
         }
     }
 
-    if ( ($state -eq "absent") -and ($exists -eq $true) ) {
-        Unregister-ScheduledTask -TaskName $name -Confirm:$false
+    if ( ($state -eq "absent") -and ($exists) ) {
+        Unregister-ScheduledTask -TaskName $name -Confirm:$false -WhatIf:$check_mode
         $result.changed = $true
-        Set-Attr $result "msg" "Deleted task $name"
+        $result.msg = "Deleted task $name"
         Exit-Json $result
     }
-    elseif ( ($state -eq "absent") -and ($exists -eq $false) ) {
-        Set-Attr $result "msg" "Task $name does not exist"
+    elseif ( ($state -eq "absent") -and (-not $exists) ) {
+        $result.msg = "Task $name does not exist"
         Exit-Json $result
     }
 
     $principal = New-ScheduledTaskPrincipal -UserId "$user" -LogonType ServiceAccount
 
-    if ($enabled -eq $false){
-        $settings = New-ScheduledTaskSettingsSet -Disable
-    }
-    else {
+    if ($enabled){
         $settings = New-ScheduledTaskSettingsSet
     }
+    else {
+        $settings = New-ScheduledTaskSettingsSet -Disable
+    }
 
-    if ($argument) {
-        $action = New-ScheduledTaskAction -Execute $execute -Argument $argument
+    if ($arguments) {
+        $action = New-ScheduledTaskAction -Execute $executable -Argument $arguments
     }
     else {
-        $action = New-ScheduledTaskAction -Execute $execute
+        $action = New-ScheduledTaskAction -Execute $executable
     }
 
-    if ( ($state -eq "present") -and ($exists -eq $false) ){
+    if ( ($state -eq "present") -and (-not $exists) ){
+        if (-not $check_mode) {
             Register-ScheduledTask -Action $action -Trigger $trigger -TaskName $name -Description $description -TaskPath $path -Settings $settings -Principal $principal
-        $task = Get-ScheduledTask -TaskName $name
-        Set-Attr $result "msg" "Added new task $name"
-        $result.changed = $true
+#            $task = Get-ScheduledTask -TaskName $name
         }
-    elseif( ($state -eq "present") -and ($exists -eq $true) ) {
-        if ($task.Description -eq $description -and $task.TaskName -eq $name -and $task.TaskPath -eq $path -and $task.Actions.Execute -eq $execute -and $taskState -eq $enabled -and $task.Principal.UserId -eq $user) {
-            #No change in the task
-            Set-Attr $result "msg" "No change in task $name"
+        $result.changed = $true
+        $result.msg = "Added new task $name"
+    }
+    elseif( ($state -eq "present") -and ($exists) ) {
+        if ($task.Description -eq $description -and $task.TaskName -eq $name -and $task.TaskPath -eq $path -and $task.Actions.Execute -eq $executable -and $taskState -eq $enabled -and $task.Principal.UserId -eq $user) {
+            # No change in the task
+            $result.msg = "No change in task $name"
         }
         else {
-            Unregister-ScheduledTask -TaskName $name -Confirm:$false
+            Unregister-ScheduledTask -TaskName $name -Confirm:$false -WhatIf:$check_mode
+            if (-not $check_mode) {
                 Register-ScheduledTask -Action $action -Trigger $trigger -TaskName $name -Description $description -TaskPath $path -Settings $settings -Principal $principal
-            Set-Attr $result "msg" "Updated task $name"
+            }
             $result.changed = $true
+            $result.msg = "Updated task $name"
         }
     }
 
-    Exit-Json $result;
+    Exit-Json $result
 }
 catch
 {

lib/ansible/modules/windows/win_scheduled_task.py

@@ -41,7 +41,6 @@ options:
   description:
     description:
       - The description for the scheduled task
-    required: false
   enabled:
     description:
       - Enable/disable the task
@@ -59,30 +58,27 @@ options:
   user:
     description:
       - User to run scheduled task as
-    required: false
-  execute:
+  executable:
     description:
       - Command the scheduled task should execute
-    required: false
-  argument:
+    aliases: [ execute ]
+  arguments:
     description:
       - Arguments to provide scheduled task action
-    required: false
+    aliases: [ argument ]
   frequency:
     description:
       - The frequency of the command, not idempotent
-    required: false
     choices:
+      - once
       - daily
       - weekly
   time:
     description:
       - Time to execute scheduled task, not idempotent
-    required: false
   days_of_week:
     description:
       - Days of the week to run a weekly task, not idempotent
-    required: false
   path:
     description:
       - Task folder in which this task will be stored
@@ -93,12 +89,13 @@ EXAMPLES = r'''
 # Create a scheduled task to open a command prompt
 - win_scheduled_task:
     name: TaskName
-    execute: cmd
-    frequency: daily
-    time: 9am
     description: open command prompt
+    executable: cmd
+    arguments: -opt1 -opt2
     path: example
-    enable: yes
+    time: 9am
+    frequency: daily
     state: present
+    enabled: yes
     user: SYSTEM
 '''

test/integration/targets/win_scheduled_task/aliases

@@ -0,0 +1 @@
+windows/ci/group3

test/integration/targets/win_scheduled_task/tasks/main.yml

@@ -0,0 +1,46 @@
+# NOTE: The win_scheduled_task module only works on Win2012+
+
+- name: Test Windows capabilities
+  raw: Get-Command New-ScheduledTask -ErrorAction SilentlyContinue; $?
+  failed_when: no
+  register: new_scheduledtask
+
+- name: Set boolean for capability
+  set_fact:
+    has_new_scheduledtask: '{{ new_scheduledtask.rc == 0 }}'
+
+- name: Test in normal mode
+  when: has_new_scheduledtask
+  block:
+  - include: tests.yml
+
+  - name: Check the various tasks in normal mode
+    assert:
+      that:
+      - add_scheduled_task.changed == true
+      - add_scheduled_task.exists == false
+      - add_scheduled_task_again.changed == false
+      - add_scheduled_task_again.exists == true
+      - remove_scheduled_task.changed == true
+      - remove_scheduled_task.exists == true
+      - remove_scheduled_task_again.changed == false
+      - remove_scheduled_task_again.exists == false
+
+
+- name: Test in check-mode
+  check_mode: yes
+  when: has_new_scheduledtask
+  block:
+  - include: tests.yml
+
+  - name: Check the various tests in check-mode
+    assert:
+      that:
+      - add_scheduled_task.changed == true
+      - add_scheduled_task.exists == false
+      - add_scheduled_task_again.changed == true
+      - add_scheduled_task_again.exists == false
+      - remove_scheduled_task.changed == false
+      - remove_scheduled_task.exists == false
+      - remove_scheduled_task_again.changed == false
+      - remove_scheduled_task_again.exists == false

test/integration/targets/win_scheduled_task/tasks/tests.yml

@@ -0,0 +1,26 @@
+- name: Remove potentially leftover scheduled task
+  win_scheduled_task: &wst_absent
+    name: Test
+    state: absent
+
+- name: Add scheduled task
+  win_scheduled_task: &wst_present
+    name: Test
+    executable: dir.exe
+    arguments: C:\Windows\Temp\
+    frequency: once
+    time: 5pm
+    user: SYSTEM
+  register: add_scheduled_task
+
+- name: Add scheduled task (again)
+  win_scheduled_task: *wst_present
+  register: add_scheduled_task_again
+
+- name: Remove scheduled task
+  win_scheduled_task: *wst_absent
+  register: remove_scheduled_task
+
+- name: Remove scheduled task (again)
+  win_scheduled_task: *wst_absent
+  register: remove_scheduled_task_again