Powershell - Compare two XML documents.

Compare-XmlDocs.ps1

function Compare-XmlDocs($actual, $expected) {
    if ($actual.Name -ne $expected.Name) {
        throw "Actual name not same as expected: actual=" + $actual.Name
    }
    ##attributes...
    
    if ($actual.Attributes.Count -ne $expected.Attributes.Count) {
        throw "attribute mismatch for actual=" + $actual.Name
    }
    for ($i=0;$i -lt $expected.Attributes.Count; $i =$i+1) {
        if ($expected.Attributes[$i].Name -ne $actual.Attributes[$i].Name) {
            throw "attribute name mismatch for actual=" + $actual.Name
        }
        if ($expected.Attributes[$i].Value -ne $actual.Attributes[$i].Value) {
            throw "attribute value mismatch for actual=" + $actual.Name
        }
    }
    
    ##children
    if ($expected.ChildNodes.Count -ne $actual.ChildNodes.Count)  {
        throw "child node mismatch. for actual=" + $actual.Name
    }
        
    for ($i=0;$i -lt $expected.ChildNodes.Count; $i =$i+1) {
        if (-not $actual.ChildNodes[$i]) {
            throw "actual missing child nodes. for actual=" + $actual.Name
        }
        Compare-XmlDocs $actual.ChildNodes[$i] $expected.ChildNodes[$i]
    }
    
    if ($expected.InnerText) {
        if ($expected.InnerText -ne $actual.InnerText) {
           throw "inner text mismatch for actual=" + $actual.Name
        }
    }
    elseif ($actual.InnerText) {
        throw "actual has inner text but expected does not for actual=" + $actual.Name
    }
}