Enforce -Depth on nested sequences by routing through ConvertTo-YamlNode; fix enum serialization for unsigned underlying types; add tests for depth truncation of nested arrays and sequence-under-mapping, and unsigned enum serialization

Author: MariusStorhaug

src/functions/private/ConvertTo-YamlMapping.ps1

@@ -53,7 +53,7 @@
                 $null = $Builder.Append(' []').AppendLine()
             } else {
                 $null = $Builder.AppendLine()
-                ConvertTo-YamlSequence -Value $rawVal -Builder $Builder -Level ($Level + 1) -CurrentDepth ($CurrentDepth + 1) -Options $Options
+                ConvertTo-YamlNode -Value $val -Builder $Builder -Level ($Level + 1) -CurrentDepth ($CurrentDepth + 1) -Options $Options
             }
             continue
         }

src/functions/private/ConvertTo-YamlSequence.ps1

@@ -75,7 +75,7 @@
                         $null = $Builder.Append($prefix).Append($keyText).Append(': []').AppendLine()
                     } else {
                         $null = $Builder.Append($prefix).Append($keyText).Append(':').AppendLine()
-                        ConvertTo-YamlSequence -Value $rawVal -Builder $Builder -Level ($Level + 2) -CurrentDepth ($CurrentDepth + 1) -Options $Options
+                        ConvertTo-YamlNode -Value $val -Builder $Builder -Level ($Level + 2) -CurrentDepth ($CurrentDepth + 1) -Options $Options
                     }
                     continue
                 }
@@ -92,7 +92,7 @@
                 $null = $Builder.Append($indent).Append('- []').AppendLine()
             } else {
                 $null = $Builder.Append($indent).Append('-').AppendLine()
-                ConvertTo-YamlSequence -Value $rawItem -Builder $Builder -Level ($Level + 1) -CurrentDepth ($CurrentDepth + 1) -Options $Options
+                ConvertTo-YamlNode -Value $item -Builder $Builder -Level ($Level + 1) -CurrentDepth ($CurrentDepth + 1) -Options $Options
             }
             continue
         }

src/functions/private/Format-YamlScalar.ps1

@@ -18,7 +18,9 @@
         if ($Options.EnumsAsStrings) {
             return Format-YamlString -Text ($Value.ToString())
         }
-        return ([int64] $Value).ToString([cultureinfo]::InvariantCulture)
+        $underlyingType = [System.Enum]::GetUnderlyingType($Value.GetType())
+        $numeric = [System.Convert]::ChangeType($Value, $underlyingType)
+        return ([System.IConvertible]$numeric).ToString([cultureinfo]::InvariantCulture)
     }
 
     if ($Value -is [byte] -or $Value -is [sbyte] -or

tests/ConvertTo-Yaml.Tests.ps1

@@ -286,6 +286,16 @@ Describe 'ConvertTo-Yaml' {
             $yaml = $obj | ConvertTo-Yaml
             $yaml.Trim() | Should -Be 'day: 1'
         }
+
+        It 'Serializes enums with unsigned underlying type correctly' {
+            # System.Security.AccessControl.FileSystemRights has UInt32 underlying type
+            # and values that can exceed Int32.MaxValue
+            $val = [System.Security.AccessControl.FileSystemRights]::FullControl
+            $obj = [ordered]@{ rights = $val }
+            $yaml = $obj | ConvertTo-Yaml
+            $expected = [int]$val
+            $yaml.Trim() | Should -Be "rights: $expected"
+        }
     }
 
     Context '-Depth' {
@@ -326,6 +336,26 @@ Describe 'ConvertTo-Yaml' {
             $depthLine = $lines[($lines.IndexOf($bLine) + 1)]
             $depthLine | Should -Match '^\s{4}'
         }
+
+        It 'Truncates deeply nested sequences beyond -Depth' {
+            $inner = ,('innermost')
+            $middle = ,$inner
+            $outer = ,$middle
+            $yaml = ConvertTo-Yaml -InputObject $outer -Depth 1 -WarningAction SilentlyContinue
+            $yaml | Should -Not -BeNullOrEmpty
+            $yaml | Should -Not -Match 'innermost'
+        }
+
+        It 'Truncates sequences under mapping keys beyond -Depth' {
+            $obj = [ordered]@{
+                a = [ordered]@{
+                    b = @(1, 2, 3)
+                }
+            }
+            $yaml = $obj | ConvertTo-Yaml -Depth 1 -WarningAction SilentlyContinue
+            $yaml | Should -Not -BeNullOrEmpty
+            $yaml | Should -Not -Match '- 1'
+        }
     }
 
     Context 'Empty collections' {