PowerShell - How to tell if two objects are identical

Question

Let\'s say you have two objects that are identical (meaning they have the same properties and the same values respectively).

How do you test for equality?

Answer 1

I wrote a function that checks for exact equality:

 function Global:Test-IdenticalObjects
 {
    param(
        [Parameter(Mandatory=$true)]$Object1,
        [Parameter(Mandatory=$true)]$Object2,
        $SecondRun=$false
    )

    if(-not ($Object1 -is [PsCustomObject] -and $Object2 -is [PsCustomObject))
    {
        Write-Error "Objects must be PsCustomObjects"
        return
    }

    foreach($property1 in $Object1.PsObject.Properties)
    {
        $prop1_name = $property1.Name
        $prop1_value = $Object1.$prop1_name
        $found_property = $false
        foreach($property2 in $Object2.PsObject.Properties)
        {
            $prop2_name = $property2.Name
            $prop2_value = $Object2.$prop2_name
            if($prop1_name -eq $prop2_name)
            {
                $found_property = $true
                if($prop1_value -ne $prop2_value)
                {
                    return $false
                }
            }
        } # j loop
        if(-not $found_property) { return $false }
    } # i loop
    if($SecondRun)
    {
        return $true
    } else {
        Test-IdenticalObjects -Object1 $Object2 -Object2 $Object1 -SecondRun $true
    }
 } # function