Add support for SemVer in builds to produce SemVer modules

GitVersion.yml

@@ -1,4 +1,5 @@
 mode: ContinuousDeployment
+next-version: 1.0.0
 assembly-versioning-scheme: 'MajorMinorPatchTag'
 assembly-informational-format: '{Major}.{Minor}.{Patch}{PreReleaseTagWithDash}+Sha.{Sha}.Date.{CommitDate}'
 commit-message-incrementing: MergeMessageOnly

Source/ModuleBuilder.psd1

@@ -6,12 +6,12 @@
     PrivateData            = @{
         # PrivateData.PSData is the PowerShell Gallery data
         PSData             = @{
-            # Prerelease string of this module
-            Prerelease     = '-beta01'
+            # Prerelease string should be here, so we can set it
+            Prerelease     = 'beta'
 
-            # ReleaseNotes of this module
+            # Release Notes have to be here, so we can update them
             ReleaseNotes   = '
-            1.0.0-beta01: Pre-release version of Build-Module
+            First release to the PowerShell gallery ...
             '
 
             # Tags applied to this module. These help with module discovery in online galleries.
@@ -50,3 +50,4 @@
     PowerShellVersion      = '5.1'
     CompatiblePSEditions = @('Core','Desktop')
 }
+

Source/Private/InitializeBuild.ps1

@@ -15,11 +15,15 @@ function InitializeBuild {
     [CmdletBinding()]
     param(
         # The root folder where the module source is (including the Build.psd1 and the module Manifest.psd1)
-        [string]$SourcePath
+        [string]$SourcePath,
+
+        # Pass the invocation from the parent in, so InitializeBuild can read parameter values
+        [Parameter(DontShow)]
+        $Invocation = $(Get-Variable MyInvocation -Scope 1 -ValueOnly)
     )
-    # Read the caller's parameter values
+    # NOTE: This reads the parameter values from Build-Module!
     $ParameterValues = @{}
-    foreach($parameter in (Get-Variable MyInvocation -Scope 1 -ValueOnly).MyCommand.Parameters.GetEnumerator()) {
+    foreach($parameter in $Invocation.MyCommand.Parameters.GetEnumerator()) {
         $key = $parameter.Key
         if($null -ne ($value = Get-Variable -Name $key -ValueOnly -ErrorAction Ignore )) {
             if($value -ne ($null -as $parameter.Value.ParameterType)) {

Source/Public/Build-Module.ps1

@@ -29,9 +29,18 @@ function Build-Module {
             Build-Module -Prefix "using namespace System.Management.Automation"
 
             This example shows how to build a simple module from it's manifest, adding a using statement at the top as a prefix
+
+        .Example
+            $gitVersion = gitversion | ConvertFrom-Json | Select -Expand InformationalVersion
+            Build-Module -SemVer $gitVersion
+
+            This example shows how to use a semantic version from gitversion to version your build.
+            Note, this is how we version ModuleBuilder, so if you want to see it in action, check out our azure-pipelines.yml
+            https://github.com/PoshCode/ModuleBuilder/blob/master/azure-pipelines.yml
     #>
     [Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSUseApprovedVerbs", "", Justification="Build is approved now")]
     [Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSUseCmdletCorrectly", "")]
+    [CmdletBinding(DefaultParameterSetName="SemanticVersion")]
     param(
         # The path to the module folder, manifest or build.psd1
         [Parameter(Position = 0, ValueFromPipelineByPropertyName)]
@@ -50,8 +59,26 @@ function Build-Module {
         [Alias("Destination")]
         [string]$OutputDirectory,
 
+        # Semantic version, like 1.0.3-beta01+sha.22c35ffff166f34addc49a3b80e622b543199cc5
+        # If the SemVer has metadata (after a +), then the full Semver will be added to the ReleaseNotes
+        [Parameter(ParameterSetName="SemanticVersion")]
+        [string]$SemVer,
+
+        # The module version (must be a valid System.Version such as PowerShell supports for modules)
         [Alias("ModuleVersion")]
-        [version]$Version,
+        [Parameter(ParameterSetName="ModuleVersion", Mandatory)]
+        [version]$Version = $(if($V = $SemVer.Split("+")[0].Split("-")[0]){$V}),
+
+        # Setting pre-release forces the release to be a pre-release.
+        # Must be valid pre-release tag like PowerShellGet supports
+        [Parameter(ParameterSetName="ModuleVersion")]
+        [string]$Prerelease = $($SemVer.Split("+")[0].Split("-")[1]),
+
+        # Build metadata (like the commit sha or the date).
+        # If a value is provided here, then the full Semantic version will be inserted to the release notes:
+        # Like: ModuleName v(Version(-Prerelease?)+BuildMetadata)
+        [Parameter(ParameterSetName="ModuleVersion")]
+        [string]$BuildMetadata = $($SemVer.Split("+")[1]),
 
         # Folders which should be copied intact to the module output
         # Can be relative to the  module folder
@@ -101,6 +128,18 @@ function Build-Module {
     }
     process {
         try {
+            # BEFORE we InitializeBuild we need to "fix" the version
+            if($PSCmdlet.ParameterSetName -ne "SemanticVersion") {
+                Write-Verbose "Calculate the Semantic Version from the $Version - $Prerelease + $BuildMetadata"
+                $SemVer = $Version
+                if($Prerelease) {
+                    $SemVer = $Version + '-' + $Prerelease
+                }
+                if($BuildMetadata) {
+                    $SemVer = $SemVer + '+' + $BuildMetadata
+                }
+            }
+
             # Push into the module source (it may be a subfolder)
             $ModuleInfo = InitializeBuild $SourcePath
             # Output file names
@@ -159,10 +198,43 @@ function Build-Module {
                 }
             }
 
-            Write-Verbose "Update Manifest to $OutputManifest"
+            try {
+                if ($Version) {
+                    Write-Verbose "Update Manifest at $OutputManifest with version: $Version"
+                    Update-Metadata -Path $OutputManifest -PropertyName ModuleVersion -Value $Version
+                }
+            } catch {
+                Write-Warning "Failed to update version to $Version. $_"
+            }
+
+            if ($Prerelease) {
+                Write-Verbose "Update Manifest at $OutputManifest with Prerelease: $Prerelease"
+                Update-Metadata -Path $OutputManifest -PropertyName PrivateData.PSData.Prerelease -Value $Prerelease
+            } else {
+                Update-Metadata -Path $OutputManifest -PropertyName PrivateData.PSData.Prerelease -Value ""
+            }
 
-            if ($Version) {
-                Update-Metadata -Path $OutputManifest -PropertyName ModuleVersion -Value $Version
+            if ($BuildMetadata) {
+                Write-Verbose "Update Manifest at $OutputManifest with metadata: $BuildMetadata from $SemVer"
+                $RelNote = Get-Metadata -Path $OutputManifest -PropertyName PrivateData.PSData.ReleaseNotes -ErrorAction SilentlyContinue
+                if ($null -ne $RelNote) {
+                    $Line = "$($ModuleInfo.Name) v$($SemVer)"
+                    if ([string]::IsNullOrWhiteSpace($RelNote)) {
+                        Write-Verbose "New ReleaseNotes:`n$Line"
+                        Update-Metadata -Path $OutputManifest -PropertyName PrivateData.PSData.ReleaseNotes -Value $Line
+                    } elseif ($RelNote -match "^\s*\n") {
+                        # Leading whitespace includes newlines
+                        Write-Verbose "Existing ReleaseNotes:$RelNote"
+                        $RelNote = $RelNote -replace "^(?s)(\s*)\S.*$|^$","`${1}$($Line)`$_"
+                        Write-Verbose "New ReleaseNotes:$RelNote"
+                        Update-Metadata -Path $OutputManifest -PropertyName PrivateData.PSData.ReleaseNotes -Value $RelNote
+                    } else {
+                        Write-Verbose "Existing ReleaseNotes:`n$RelNote"
+                        $RelNote = $RelNote -replace "^(?s)(\s*)\S.*$|^$","`${1}$($Line)`n`$_"
+                        Write-Verbose "New ReleaseNotes:`n$RelNote"
+                        Update-Metadata -Path $OutputManifest -PropertyName PrivateData.PSData.ReleaseNotes -Value $RelNote
+                    }
+                }
             }
 
             # This is mostly for testing ...

Tests/Public/Build-Module.Tests.ps1

@@ -19,7 +19,7 @@ Describe "Build-Module" {
         It "has an optional parameter for setting the Version"{
             $parameters.ContainsKey("Version") | Should -Be $true
             $parameters["Version"].ParameterType | Should -Be ([version])
-            $parameters["Version"].Attributes.Where{$_ -is [Parameter]}.Mandatory | Should -Be $false
+            $parameters["Version"].ParameterSets.Keys | Should -Not -Be "__AllParameterSets"
         }
 
         It "has an optional parameter for setting the Encoding"{
@@ -185,4 +185,113 @@ Describe "Build-Module" {
             Assert-MockCalled SetModuleContent -ModuleName ModuleBuilder -Times 0
         }
     }
+
+    Context "Setting the version to a SemVer string" {
+        $SemVer = "1.0.0-beta03+sha.22c35ffff166f34addc49a3b80e622b543199cc5.Date.2018-10-11"
+        $global:ExpectedVersion = "1.0.0"
+        Push-Location TestDrive:\ -StackName BuildModuleTest
+        New-Item -ItemType Directory -Path TestDrive:\MyModule\ -Force
+        New-Item -ItemType Directory -Path "TestDrive:\$ExpectedVersion\" -Force
+
+        Mock SetModuleContent -ModuleName ModuleBuilder {}
+        Mock Update-Metadata -ModuleName ModuleBuilder {}
+        Mock InitializeBuild -ModuleName ModuleBuilder {
+            # These are actually all the values that we need
+            @{
+                OutputDirectory = "TestDrive:\$Version"
+                Name = "MyModule"
+                ModuleBase = "TestDrive:\MyModule\"
+                CopyDirectories = @()
+                Encoding = "UTF8"
+                PublicFilter = "Public\*.ps1"
+            }
+        }
+
+        Mock Test-Path {$True} -Parameter {$Path -eq "TestDrive:\$ExpectedVersion"} -ModuleName ModuleBuilder
+        Mock Remove-Item {} -Parameter {$Path -eq "TestDrive:\$ExpectedVersion"} -ModuleName ModuleBuilder
+        Mock Set-Location {} -ModuleName ModuleBuilder
+        Mock Copy-Item {} -ModuleName ModuleBuilder
+        # Release notes
+        Mock Get-Metadata { "First Release" } -ModuleName ModuleBuilder
+        Mock Join-Path {
+            [IO.Path]::Combine($Path, $ChildPath)
+        } -ModuleName ModuleBuilder
+
+        Mock Get-ChildItem {
+            [IO.FileInfo]$(Join-Path $(Convert-Path "TestDrive:\") "MyModule\Public\Get-MyInfo.ps1")
+        } -ModuleName ModuleBuilder
+
+        Mock New-Item {} -Parameter {
+            $Path -eq "TestDrive:\$ExpectedVersion" -and
+            $ItemType -eq "Directory" -and
+            $Force -eq $true
+        } -ModuleName ModuleBuilder
+
+        try {
+            Build-Module -SemVer $SemVer
+        } catch {
+            Pop-Location -StackName BuildModuleTest
+            throw
+        }
+
+        It "Should build to an output folder with the simple version." {
+            Assert-MockCalled Remove-Item -ModuleName ModuleBuilder
+            Assert-MockCalled New-Item -ModuleName ModuleBuilder
+        }
+
+        It "Should update the module version to the simple version." {
+            Assert-MockCalled Update-Metadata -ModuleName ModuleBuilder -ParameterFilter {
+                $PropertyName -eq "ModuleVersion" -and $Value -eq $ExpectedVersion
+            }
+        }
+        It "Should update the module pre-release version" {
+            Assert-MockCalled Update-Metadata -ModuleName ModuleBuilder -ParameterFilter {
+                $PropertyName -eq "PrivateData.PSData.Prerelease" -and $Value -eq "beta03"
+            }
+        }
+        It "When there are simple release notes, it should insert a line with the module name and full semver" {
+            Assert-MockCalled Update-Metadata -ModuleName ModuleBuilder -ParameterFilter {
+                $PropertyName -eq "PrivateData.PSData.ReleaseNotes" -and $Value -eq "MyModule v$($SemVer)`nFirst Release"
+            }
+        }
+
+        It "When there's no release notes, it should insert the module name and full semver" {
+            # If there's no release notes, but it was left uncommented
+            Mock Get-Metadata { "" } -ModuleName ModuleBuilder
+
+            try {
+                Build-Module -SemVer $SemVer
+            } catch {
+                Pop-Location -StackName BuildModuleTest
+                throw
+            }
+
+            Assert-MockCalled Update-Metadata -ModuleName ModuleBuilder -ParameterFilter {
+                $PropertyName -eq "PrivateData.PSData.ReleaseNotes" -and $Value -eq "MyModule v$SemVer"
+            }
+        }
+
+        It "When there's a prefix empty line, it should insert the module name and full semver the same way" {
+            # If there's no release notes, but it was left uncommented
+            Mock Get-Metadata { "
+                    Multi-line Release Notes
+                    With a prefix carriage return" } -ModuleName ModuleBuilder
+
+            try {
+                Build-Module -SemVer $SemVer
+            }  catch {
+                Pop-Location -StackName BuildModuleTest
+                throw
+            }
+
+            Assert-MockCalled Update-Metadata -ModuleName ModuleBuilder -ParameterFilter {
+                $PropertyName -eq "PrivateData.PSData.ReleaseNotes" -and $Value -eq "
+                    MyModule v$SemVer
+                    Multi-line Release Notes
+                    With a prefix carriage return"
+            }
+        }
+
+        Pop-Location -StackName BuildModuleTest
+    }
 }

azure-pipelines.yml

@@ -14,7 +14,7 @@ steps:
 - powershell: .\bootstrap.ps1
   displayName: 'Restore pre-requisites'
 
-- powershell: .\build.ps1 -OutputDirectory $(Build.ArtifactStagingDirectory)\$(Build.DefinitionName) -Version $(GitVersion.AssemblySemVer) -Verbose
+- powershell: .\build.ps1 -OutputDirectory $(Build.ArtifactStagingDirectory)\$(Build.DefinitionName) -SemVer $(GitVersion.InformationalVersion) -Verbose
   displayName: 'Run build script'
 
 - task: richardfennellBM.BM-VSTS-PesterRunner-Task.Pester-Task.Pester@8

build.ps1

@@ -10,7 +10,7 @@ param(
 
     # The version of the output module
     [Alias("ModuleVersion")]
-    [version]$Version
+    [string]$SemVer
 )
 
 # Sanitize parameters to pass to Build-Module
@@ -19,7 +19,6 @@ $null = $PSBoundParameters.Remove('Test')
 $ErrorActionPreference = "Stop"
 Push-Location $PSScriptRoot -StackName BuildBuildModule
 try {
-
     # Build ModuleBuilder with ModuleBuilder:
     Write-Verbose "Compiling ModuleBuilderBootstrap module"
     $OFS = "`n`n"