Check if in debug mode in PowerShell

Question

How to check in PowerShell, does my script work in debug mode? I am currently debugging in Visual Studio 2015 with PowerShell tools installed.

Part of the script sends an email using Send-MailMessage. I would like to do something similar to below.

If (Debug)
{
    $messageProperties.To = "$env:[e-mail]"
}
Else
{
    $messageProperties.To = "[e-mail]"
}

I know in C # that I can do something like below. I would like to know how this is handled in PowerShell.

#if DEBUG
    // Debug code
#endif

Answer 1

"" PowerShell . 1) , 2) / -Debug $DebugPreferences SilentlyContinue 3) PowerShell , 4) Set-PSDebug ( , № 3).

, № 2. (, -Debug PSBoundVariables $DebugPreferences SilentlyContinue). Write-Debug. PowerShell-ih .

# 1, , , PowerShell (Debugger.BreakpointUpdated Debugger.DebuggerStop), , .

№ 4, , , . PowerShell 3.0 PSDebug - Set-PSDebug, , PSDebug.

№ 3, № 4. , .

Answer 2

, ; .

function Test-Debug {
    [CmdletBinding()]
    param (
        [Parameter(Mandatory = $false)]
        [switch]$IgnorePSBoundParameters
        ,
        [Parameter(Mandatory = $false)]
        [switch]$IgnoreDebugPreference
        ,
        [Parameter(Mandatory = $false)]
        [switch]$IgnorePSDebugContext
    )
    process {
        ((-not $IgnoreDebugPreference.IsPresent) -and ($DebugPreference -ne "SilentlyContinue")) -or
        ((-not $IgnorePSBoundParameters.IsPresent) -and $PSBoundParameters.Debug.IsPresent) -or
        ((-not $IgnorePSDebugContext.IsPresent) -and ($PSDebugContext))
    }
}

:

#region 'Test Functions'
function Test-InheritExplicit {
    [CmdletBinding()]
    param (
        [Parameter(Mandatory = $false)]
        [switch]$IgnorePSBoundParameters
        ,
        [Parameter(Mandatory = $false)]
        [switch]$IgnoreDebugPreference
        ,
        [Parameter(Mandatory = $false)]
        [switch]$IgnorePSDebugContext
    )
    process {
        #if we weren't splatting all vars over, we could use this trick:
        #[switch]$DebugCopy = $PSBoundParameters.Debug
        #Test-Debug -Debug:$DebugCopy
        Test-Debug @PSBoundParameters
    }
}

function Test-InheritImplicit {
    [CmdletBinding()]
    param (
        [Parameter(Mandatory = $false)]
        [switch]$IgnorePSBoundParameters
        ,
        [Parameter(Mandatory = $false)]
        [switch]$IgnoreDebugPreference
        ,
        [Parameter(Mandatory = $false)]
        [switch]$IgnorePSDebugContext
    )
    process {
        Test-Debug -IgnorePSBoundParameters:$IgnorePSBoundParameters -IgnorePSDebugContext:$IgnorePSDebugContext -IgnoreDebugPreference:$IgnoreDebugPreference
    }
}
#endregion 'Test Functions'

#region 'Test Cases'
[hashtable[]]$testCases = 0..15 | %{
    [hashtable]$new = @{}
    if ($_ -band 1) {$new.Debug = [switch]$true}
    if ($_ -band 2) {$new.IgnorePSBoundParameters = [switch]$true}            
    if ($_ -band 4) {$new.IgnoreDebugPreference = [switch]$true}
    if ($_ -band 8) {$new.IgnorePSDebugContext = [switch]$true}
    $new
}

[int]$t = 0
$testCases | %{
    [hashtable]$testCase = $_
    (New-Object -TypeName PSObject -Property @{
        TestId = ++$t
        Debug = [bool]$_.Debug
        IgnorePSBoundParameters = [bool]$_.IgnorePSBoundParameters
        IgnoreDebugPreference = [bool]$_.IgnoreDebugPreference
        IgnorePSDebugContext = [bool]$_.IgnorePSDebugContext
        TD = (Test-Debug @testCase)
        TIE = (Test-InheritExplicit @testCase)
        TII = (Test-InheritImplicit @testCase)
    })
} | Format-Table  TestId, Debug, IgnorePSBoundParameters, IgnoreDebugPreference, IgnorePSDebugContext, TD, TIE, TII -AutoSize

:

TestId Debug IgnorePSBoundParameters IgnoreDebugPreference IgnorePSDebugContext    TD   TIE   TII
------ ----- ----------------------- --------------------- --------------------    --   ---   ---
     1 False                   False                 False                False False False False
     2  True                   False                 False                False  True  True  True
     3 False                    True                 False                False False False False
     4  True                    True                 False                False  True  True  True
     5 False                   False                  True                False False False False
     6  True                   False                  True                False  True  True False
     7 False                    True                  True                False False False False
     8  True                    True                  True                False False False False
     9 False                   False                 False                 True False False False
    10  True                   False                 False                 True  True  True  True
    11 False                    True                 False                 True False False False
    12  True                    True                 False                 True  True  True  True
    13 False                   False                  True                 True False False False
    14  True                   False                  True                 True  True  True False
    15 False                    True                  True                 True False False False
    16  True                    True                  True                 True False False False