Bind YAML file properties as literal paths

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Author: MariusStorhaug

src/functions/public/Import-Yaml.ps1

@@ -85,15 +85,13 @@ function Import-Yaml {
     [OutputType([object])]
     [CmdletBinding(DefaultParameterSetName = 'Path')]
     param (
-        # Expands wildcard paths and accepts path values or FullName properties.
+        # Expands wildcard paths and accepts string pipeline values.
         [Parameter(
             Mandatory,
             Position = 0,
             ValueFromPipeline,
-            ValueFromPipelineByPropertyName,
             ParameterSetName = 'Path'
         )]
-        [Alias('FullName')]
         [string[]] $Path,
 
         # Resolves exact paths from LiteralPath, PSPath, or FullName properties.
@@ -102,7 +100,7 @@ function Import-Yaml {
             ValueFromPipelineByPropertyName,
             ParameterSetName = 'LiteralPath'
         )]
-        [Alias('PSPath')]
+        [Alias('PSPath', 'FullName')]
         [string[]] $LiteralPath,
 
         # Selects the fallback decoder when a file has no byte order mark.

tests/Import-Yaml.Tests.ps1

@@ -30,12 +30,13 @@ Describe 'Import-Yaml' {
             $pathParameter.IsMandatory | Should -BeTrue
             $pathParameter.Position | Should -Be 0
             $pathParameter.ValueFromPipeline | Should -BeTrue
-            $pathParameter.ValueFromPipelineByPropertyName | Should -BeTrue
+            $pathParameter.ValueFromPipelineByPropertyName | Should -BeFalse
             $literalPathParameter.IsMandatory | Should -BeTrue
             $literalPathParameter.ValueFromPipeline | Should -BeFalse
             $literalPathParameter.ValueFromPipelineByPropertyName | Should -BeTrue
-            $command.Parameters['Path'].Aliases | Should -Contain 'FullName'
+            $command.Parameters['Path'].Aliases | Should -Not -Contain 'FullName'
             $command.Parameters['LiteralPath'].Aliases | Should -Contain 'PSPath'
+            $command.Parameters['LiteralPath'].Aliases | Should -Contain 'FullName'
             $command.OutputType.Type | Should -Contain ([object])
         }
 
@@ -262,15 +263,24 @@ Describe 'Import-Yaml' {
             (Import-Yaml -LiteralPath $path).value | Should -Be 'literal'
         }
 
-        It 'accepts FileInfo pipeline input through Path' {
-            $path = Join-Path $TestDrive 'pipeline.yaml'
+        It 'resolves FileInfo pipeline input literally' {
+            $path = Join-Path $TestDrive 'config[production].yaml'
             [System.IO.File]::WriteAllText($path, 'value: pipeline')
 
             $result = Get-Item -LiteralPath $path | Import-Yaml
 
             $result.value | Should -Be 'pipeline'
         }
 
+        It 'resolves FullName pipeline properties literally' {
+            $path = Join-Path $TestDrive 'full[name].yaml'
+            [System.IO.File]::WriteAllText($path, 'value: fullname')
+
+            $result = [pscustomobject]@{ FullName = $path } | Import-Yaml
+
+            $result.value | Should -Be 'fullname'
+        }
+
         It 'accepts PSPath pipeline properties through LiteralPath' {
             $path = Join-Path $TestDrive 'literal[2].yaml'
             [System.IO.File]::WriteAllText($path, 'value: property')