Add DetailedView to $ErrorView (#15609)

src/System.Management.Automation/FormatAndOutput/DefaultFormatters/PowerShellCore_format_ps1xml.cs

@@ -996,7 +996,7 @@ namespace System.Management.Automation.Runspaces
                 CustomControl.Create(outOfBand: true)
                     .StartEntry()
                         .AddScriptBlockExpressionBinding(@"
-                                    if (@('NativeCommandErrorMessage','NativeCommandError') -notcontains $_.FullyQualifiedErrorId -and @('CategoryView','ConciseView') -notcontains $ErrorView)
+                                    if (@('NativeCommandErrorMessage','NativeCommandError') -notcontains $_.FullyQualifiedErrorId -and @('CategoryView','ConciseView','DetailedView') -notcontains $ErrorView)
                                     {
                                         $myinv = $_.InvocationInfo
                                         if ($myinv -and $myinv.MyCommand)
@@ -1286,7 +1286,10 @@ namespace System.Management.Automation.Runspaces
                                     else
                                     {
                                         $myinv = $err.InvocationInfo
-                                        if ($ErrorView -eq 'ConciseView') {
+                                        if ($ErrorView -eq 'DetailedView') {
+                                            return (Get-Error | Out-String)
+                                        }
+                                        elseif ($ErrorView -eq 'ConciseView') {
                                             $posmsg = Get-ConciseViewPositionMessage
                                         }
                                         elseif ($myinv -and ($myinv.MyCommand -or ($err.CategoryInfo.Category -ne 'ParserError'))) {

src/System.Management.Automation/engine/CommandBase.cs

@@ -300,6 +300,9 @@ namespace System.Management.Automation
 
         /// <summary>Concise shows more information on the context of the error or just the message if not a script or parser error.</summary>
         ConciseView = 2,
+
+        /// <summary>Detailed will leverage Get-Error to get much more detailed information for the error.</summary>
+        DetailedView = 3,
     }
     #endregion ErrorView
 

test/powershell/engine/Formatting/ErrorView.Tests.ps1

@@ -170,4 +170,20 @@ Describe 'Tests for $ErrorView' -Tag CI {
             $e | Should -BeLike '*Oops!*'
         }
     }
+
+    Context 'DetailedView tests' {
+
+        It 'Detailed error is rendered' {
+            try {
+                $ErrorView = 'DetailedView'
+                throw 'Oops!'
+            }
+            catch {
+                # an extra newline gets added by the formatting system so we remove them
+                $e = ($_ | Out-String).Trim([Environment]::NewLine.ToCharArray())
+            }
+
+            $e | Should -BeExactly (Get-Error | Out-String).Trim([Environment]::NewLine.ToCharArray())
+        }
+    }
 }