Resolve to the current version on non-PR events instead of throwing

Author: MariusStorhaug

scripts/Resolve-PSModuleVersion.Helpers.psm1

@@ -149,7 +149,9 @@ function Get-GitHubPullRequest {
 
         $pr = $githubEvent.pull_request
         if (-not $pr) {
-            throw 'GitHub event does not contain pull_request data. This action must be run from a pull_request event.'
+            Write-Host 'GitHub event does not contain pull_request data (non-PR event, e.g. workflow_dispatch or schedule).'
+            Write-Host 'No pull request context is available; the caller keeps the current version without a bump.'
+            return $null
         }
 
         $labels = @()

scripts/main.ps1

@@ -9,7 +9,24 @@ Import-Module -Name "$PSScriptRoot/Resolve-PSModuleVersion.Helpers.psm1" -Force
 $actionInput = Read-ActionInput
 $config = Get-PublishConfiguration -SettingsJson $actionInput.SettingsJson
 $pullRequest = Get-GitHubPullRequest
-$decision = Resolve-ReleaseDecision -Configuration $config -PullRequest $pullRequest
+
+$decision = if ($null -eq $pullRequest) {
+    # Non-PR event (for example workflow_dispatch or schedule): there are no pull request
+    # labels to determine a version bump, so keep the current published version and publish
+    # nothing. For a module that has never been released this floors at 0.0.0.
+    [PSCustomObject]@{
+        ShouldPublish    = $false
+        CreateRelease    = $false
+        CreatePrerelease = $false
+        MajorRelease     = $false
+        MinorRelease     = $false
+        PatchRelease     = $false
+        HasVersionBump   = $false
+        PrereleaseName   = ''
+    }
+} else {
+    Resolve-ReleaseDecision -Configuration $config -PullRequest $pullRequest
+}
 
 $releases = Get-GitHubRelease
 $ghVersion = Get-LatestGitHubVersion -Releases $releases

tests/Resolve-PSModuleVersion.Helpers.Tests.ps1

@@ -188,3 +188,46 @@ Describe 'End-to-end: Resolve-ReleaseDecision + Get-NextModuleVersion' {
         }
     }
 }
+
+Describe 'Non-PR event keeps the current version' {
+    # main.ps1 builds this decision when the event has no pull_request (for example
+    # workflow_dispatch or schedule): no bump, no prerelease, no publish. Get-NextModuleVersion
+    # must then return the current published version unchanged, floored at 0.0.0 when nothing
+    # has ever been released.
+    BeforeAll {
+        Mock -CommandName Find-PSResource -ModuleName 'Resolve-PSModuleVersion.Helpers' -MockWith { @() }
+        $emptyReleases = @([PSCustomObject]@{ tagName = 'v0.0.0'; isLatest = $false; isPrerelease = $false })
+        $config = [PSCustomObject]@{
+            AutoPatching          = $false
+            IncrementalPrerelease = $true
+            DatePrereleaseFormat  = ''
+            VersionPrefix         = 'v'
+            ReleaseType           = 'None'
+            IgnoreLabels          = @()
+            MajorLabels           = @('major')
+            MinorLabels           = @('minor')
+            PatchLabels           = @('patch')
+        }
+        $noReleaseDecision = [PSCustomObject]@{
+            ShouldPublish    = $false
+            CreateRelease    = $false
+            CreatePrerelease = $false
+            MajorRelease     = $false
+            MinorRelease     = $false
+            PatchRelease     = $false
+            HasVersionBump   = $false
+            PrereleaseName   = ''
+        }
+    }
+
+    It 'keeps the current version <LatestVersion> with no bump and no prerelease' -ForEach @(
+        @{ LatestVersion = '1.2.3' }
+        @{ LatestVersion = '0.0.0' }
+    ) {
+        $latestVer = New-PSSemVer -Version $LatestVersion
+        $result = Get-NextModuleVersion -LatestVersion $latestVer -Decision $noReleaseDecision `
+            -Configuration $config -ModuleName 'TestModule' -Releases $emptyReleases
+        "$($result.Major).$($result.Minor).$($result.Patch)" | Should -Be $LatestVersion
+        $result.Prerelease | Should -BeNullOrEmpty
+    }
+}