Invoke-ReportServerSetupAction: Expand environment variables in path parameters

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- `Invoke-ReportServerSetupAction`
+  - Now uses `Format-Path` with `-ExpandEnvironmentVariable` to expand environment
+    variables in all path parameters (`MediaPath`, `LogPath`, `InstallFolder`)
+    ([issue #2085](https://github.com/dsccommunity/SqlServerDsc/issues/2085)).
 - Added public command `Get-SqlDscServerProtocolTcpIp` to retrieve TCP/IP address
   group information for SQL Server instances. Returns `ServerIPAddress` objects
   containing port configuration including `TcpPort`, `TcpDynamicPorts`, `Enabled`,

source/Private/Invoke-ReportServerSetupAction.ps1

@@ -242,6 +242,26 @@ function Invoke-ReportServerSetupAction
 
     $ErrorActionPreference = $previousErrorActionPreference
 
+    # Normalize paths: expand environment variables, ensure drive letter root, and remove trailing separators.
+    $formatPathParameters = @{
+        EnsureDriveLetterRoot        = $true
+        NoTrailingDirectorySeparator = $true
+        ExpandEnvironmentVariable    = $true
+        ErrorAction                  = 'Stop'
+    }
+
+    $MediaPath = Format-Path @formatPathParameters -Path $MediaPath
+
+    if ($PSBoundParameters.ContainsKey('LogPath'))
+    {
+        $LogPath = Format-Path @formatPathParameters -Path $LogPath
+    }
+
+    if ($PSBoundParameters.ContainsKey('InstallFolder'))
+    {
+        $InstallFolder = Format-Path @formatPathParameters -Path $InstallFolder
+    }
+
     # Sensitive values.
     $sensitiveValue = @()
 
@@ -318,10 +338,8 @@ function Invoke-ReportServerSetupAction
 
     if ($PSCmdlet.ShouldProcess($verboseDescriptionMessage, $verboseWarningMessage, $captionMessage))
     {
-        $expandedMediaPath = [System.Environment]::ExpandEnvironmentVariables($MediaPath)
-
         $startProcessParameters = @{
-            FilePath     = $expandedMediaPath
+            FilePath     = $MediaPath
             ArgumentList = $setupArgument
             Timeout      = $Timeout
         }

tests/Unit/Private/Invoke-ReportServerSetupAction.Tests.ps1

@@ -428,6 +428,134 @@ Describe 'Invoke-ReportServerSetupAction' -Tag 'Private' {
                 }
             }
         }
+
+        Context 'When path parameters contain environment variables' {
+            BeforeAll {
+                # Mock Test-Path to return $true for all paths in this context
+                Mock -CommandName Test-Path -MockWith {
+                    return $true
+                }
+
+                Mock -CommandName Start-SqlSetupProcess -MockWith {
+                    return 0
+                } -RemoveParameterValidation 'FilePath'
+
+                Mock -CommandName Format-Path -MockWith {
+                    # Return expanded path for testing
+                    return 'C:\Logs\Test\setup.log'
+                } -ParameterFilter {
+                    $Path -eq '%TEMP%\setup.log'
+                }
+
+                Mock -CommandName Format-Path -MockWith {
+                    return 'C:\Program Files\ReportServer'
+                } -ParameterFilter {
+                    $Path -eq '%ProgramFiles%\ReportServer'
+                }
+
+                Mock -CommandName Format-Path -MockWith {
+                    return 'C:\SqlMedia\setup.exe'
+                } -ParameterFilter {
+                    $Path -eq '%SystemDrive%\SqlMedia\setup.exe'
+                }
+
+                InModuleScope -ScriptBlock {
+                    $script:mockDefaultParameters = @{
+                        Install              = $true
+                        AcceptLicensingTerms = $true
+                        MediaPath            = '%SystemDrive%\SqlMedia\setup.exe'
+                        Force                = $true
+                    }
+                }
+            }
+
+            It 'Should call Format-Path for MediaPath parameter' {
+                InModuleScope -ScriptBlock {
+                    Invoke-ReportServerSetupAction @mockDefaultParameters
+
+                    Should -Invoke -CommandName Format-Path -ParameterFilter {
+                        $Path -eq '%SystemDrive%\SqlMedia\setup.exe' -and
+                        $EnsureDriveLetterRoot -eq $true -and
+                        $NoTrailingDirectorySeparator -eq $true -and
+                        $ExpandEnvironmentVariable -eq $true
+                    } -Exactly -Times 1 -Scope It
+                }
+            }
+
+            It 'Should call Format-Path for LogPath parameter when specified' {
+                InModuleScope -ScriptBlock {
+                    $installParameters = $mockDefaultParameters.Clone()
+                    $installParameters.LogPath = '%TEMP%\setup.log'
+
+                    Invoke-ReportServerSetupAction @installParameters
+
+                    Should -Invoke -CommandName Format-Path -ParameterFilter {
+                        $Path -eq '%TEMP%\setup.log' -and
+                        $EnsureDriveLetterRoot -eq $true -and
+                        $NoTrailingDirectorySeparator -eq $true -and
+                        $ExpandEnvironmentVariable -eq $true
+                    } -Exactly -Times 1 -Scope It
+                }
+            }
+
+            It 'Should call Format-Path for InstallFolder parameter when specified' {
+                InModuleScope -ScriptBlock {
+                    $installParameters = $mockDefaultParameters.Clone()
+                    $installParameters.InstallFolder = '%ProgramFiles%\ReportServer'
+
+                    Invoke-ReportServerSetupAction @installParameters
+
+                    Should -Invoke -CommandName Format-Path -ParameterFilter {
+                        $Path -eq '%ProgramFiles%\ReportServer' -and
+                        $EnsureDriveLetterRoot -eq $true -and
+                        $NoTrailingDirectorySeparator -eq $true -and
+                        $ExpandEnvironmentVariable -eq $true
+                    } -Exactly -Times 1 -Scope It
+                }
+            }
+
+            It 'Should pass the expanded path to Start-SqlSetupProcess for MediaPath' {
+                InModuleScope -ScriptBlock {
+                    Invoke-ReportServerSetupAction @mockDefaultParameters
+
+                    Should -Invoke -CommandName Start-SqlSetupProcess -ParameterFilter {
+                        $FilePath -eq 'C:\SqlMedia\setup.exe'
+                    } -Exactly -Times 1 -Scope It
+                }
+            }
+
+            It 'Should pass the expanded path in ArgumentList for LogPath' {
+                InModuleScope -ScriptBlock {
+                    $installParameters = $mockDefaultParameters.Clone()
+                    $installParameters.LogPath = '%TEMP%\setup.log'
+
+                    Invoke-ReportServerSetupAction @installParameters
+
+                    Should -Invoke -CommandName Start-SqlSetupProcess -ParameterFilter {
+                        $ArgumentList | Should -MatchExactly '\/log "C:\\Logs\\Test\\setup\.log"'
+
+                        # Return $true if none of the above throw.
+                        $true
+                    } -Exactly -Times 1 -Scope It
+                }
+            }
+
+            It 'Should pass the expanded path in ArgumentList for InstallFolder' {
+                InModuleScope -ScriptBlock {
+                    $installParameters = $mockDefaultParameters.Clone()
+                    $installParameters.InstallFolder = '%ProgramFiles%\ReportServer'
+
+                    Invoke-ReportServerSetupAction @installParameters
+
+                    Should -Invoke -CommandName Start-SqlSetupProcess -ParameterFilter {
+                        $ArgumentList | Should -MatchExactly '\/InstallFolder="C:\\Program Files\\ReportServer"'
+
+                        # Return $true if none of the above throw.
+                        $true
+                    } -Exactly -Times 1 -Scope It
+                }
+            }
+        }
     }
 
     Context 'When setup action is ''Uninstall''' {