🪲 [Fix]: Built modules with resolved versions can be tested (#119)

Built modules whose manifests carry a real, resolved version can now be
tested by `Test-PSModule`. Previously the action installed the built
module under the historical `999.0.0` placeholder folder, so module
tests failed once the build flow started stamping manifests with the
version that will actually be shipped.

## Fixed: Built modules with resolved versions can be tested

`Test-PSModule` now installs and validates built module outputs whose
manifest `ModuleVersion` has already been resolved to the real build
version. The module is installed under a matching version folder before
module tests run, so PowerShell accepts the manifest and Pester
validates the artifact from the expected path.

This is delivered by bumping the pinned
`PSModule/Install-PSModuleHelpers` to `v1.0.8`, which installs built
modules at their real version instead of the `999.0.0` placeholder.

## Technical Details

- `action.yml`: `PSModule/Install-PSModuleHelpers` pin bumped `v1.0.7`
-> `v1.0.8` (the release from
[PSModule/Install-PSModuleHelpers#19](PSModule/Install-PSModuleHelpers#19)).
- `src/tests/Module/PSModule/PSModule.Tests.ps1`: new test asserting the
installed version folder matches the manifest `ModuleVersion`, guarding
against a regression to the `999.0.0` behavior.
- `tests/outputTestRepo/outputs/module/PSModuleTest/PSModuleTest.psd1`:
fixture `ModuleVersion` updated `999.0.0` -> `3.0.11` to model the
current build output.
- The branch is merged up to date with `main`, which already carries the
`actions/checkout` v7.0.0, `super-linter` v8.7.0, and
`PSModule/Invoke-Pester` v4.2.6 pins, so this PR no longer changes
those.

Author: MariusStorhaug

action.yml

@@ -267,7 +267,7 @@ runs:
   using: composite
   steps:
     - name: Install-PSModuleHelpers
-      uses: PSModule/Install-PSModuleHelpers@ed79b6e3aa8c9cd3d30ab2bf02ea6bd4687b9c74 # v1.0.7
+      uses: PSModule/Install-PSModuleHelpers@68e8ca76be679bfcb7099aed8cffa911c4ab72af # v1.0.8
 
     - name: Get test paths
       shell: pwsh

src/tests/Module/PSModule/PSModule.Tests.ps1

@@ -82,6 +82,12 @@ Describe 'PSModule - Module tests' {
             $result | Should -Be $true
             Write-Host "$($result | Format-List | Out-String)"
         }
+        It 'Module version folder matches the manifest version' {
+            $manifest = Import-PowerShellDataFile -Path $moduleManifestPath
+            $moduleVersionFolder = Split-Path -Path (Split-Path -Path $moduleManifestPath -Parent) -Leaf
+
+            $moduleVersionFolder | Should -Be $manifest.ModuleVersion.ToString()
+        }
         It 'Module Manifest is valid' {
             $result = Test-ModuleManifest -Path $moduleManifestPath
             $result | Should -Not -Be $null

tests/outputTestRepo/outputs/module/PSModuleTest/PSModuleTest.psd1

@@ -1,6 +1,6 @@
 @{
     RootModule            = 'PSModuleTest.psm1'
-    ModuleVersion         = '999.0.0'
+    ModuleVersion         = '3.0.11'
     CompatiblePSEditions  = @(
         'Core'
         'Desktop'