Powershell function to compare property values of two PSObjects that contain only primitive type properties (non-nested).

CompareObjects.ps1

# Function to compare property values of two PSObjects with wrapper around Compare-Object.
# Usage Compare-Objects <reference_object> <diff_object> <array_of_relevant_properties>
# The `strict` parameter is relevant if you want to compare integer to floating point number strictly.
# The `explicit` parameter is default to $true to see value by value difference.
function Compare-Objects {
    param (
      [Parameter(Mandatory=$true)]
      [PSObject]$obj1,
      
      [Parameter(Mandatory=$true)]
      [PSObject]$obj2,
      
      [Parameter(Mandatory=$true)]
      [array]$properties,
      
      [Parameter(Mandatory=$false)]
      [bool]$strict=$true,
      
      [Parameter(Mandatory=$false)]
      [bool]$explicit=$true
    )

    foreach ($property in $properties) {
        Write-Host "Comparing $property..."

        $p1 = $obj1.$property
        $p2 = $obj2.$property
        
        if ($p1.Length -ne $p2.Length) {
          Write-Host "Difference in length for $p1 and $p2"
        }
        
        if ($strict) {
          $p1 = $p1 | ForEach-Object {$_.ToString()}
          $p2 = $p2 | ForEach-Object {$_.ToString()}
        }
        
        if ($explicit) {
          for ($i = 0; $i -lt $p2.Length; $i++) {
              if ($p1[$i] -ne $p2[$i]) {
                $diff += "$($p1[$i]) != $($p2[$i]) `r`n"
              }
          }
        }
        else {
          $diff = Compare-Object $p1 $p2
        }
        
        if ($diff) {
          Write-Host "Differences found:"
          $diff
        }
        else {
          Write-Host "No differences found comparing $property"
        }
    }
}