I have been trying to figure out how to accurately validate this XML, it looks like it shouldn't be passing validation but it is. I have tried a C# implementation and a powershell implementation, both pass but should not. For reference, my XSD imports 4 other XSDs but I have attached the relevant parts for brevity;
Basic C# validation
class XmlSchemaSetExample
{
static void Main()
{
XmlReaderSettings xmlSettings = new XmlReaderSettings();
xmlSettings.Schemas.Add("http://url.org/Contract", @"C:\XML\Contract.xsd");
xmlSettings.ValidationType = ValidationType.Schema;
xmlSettings.ValidationEventHandler += new ValidationEventHandler(xmlSettingsValidator);
XmlReader xml = XmlReader.Create(@"C:\XML\response2.xml", xmlSettings);
while (xml.Read()) { }
}
static void xmlSettingsValidator(object sender, ValidationEventArgs e)
{
if (e.Severity == XmlSeverityType.Warning)
{
Console.Write("WARNING: ");
Console.WriteLine(e.Message);
}
else if (e.Severity == XmlSeverityType.Error)
{
Console.Write("ERROR: ");
Console.WriteLine(e.Message);
}
}
}
I have tried other XSD/XML combinations and I can trigger a failure but I cannot trigger a failure with this specific XSD/XML payload -- where the ErrorDetail tag should trigger a validation error with ErrorDetailFault in the XML instead of the defined tag. However, I cannot find a way to trigger this validation error. I am defining the ErrorDetail complex type and then referencing the type in the XSD
XSD
<?xml version="1.0" encoding="utf-8"?>
<xs:schema xmlns:ser="http://schemas.microsoft.com/2003/10/Serialization/" xmlns:tns="http://url.org/Contract" xmlns:xs="http://www.w3.org/2001/XMLSchema" targetNamespace="http://url.org/Contract" elementFormDefault="qualified">
<xs:import namespace="http://schemas.microsoft.com/2003/10/Serialization/" schemaLocation="Serialization.xsd"/>
<xs:complexType name="ErrorDetail">
<xs:sequence>
<xs:element name="Time" type="xs:dateTime" nillable="true" minOccurs="0"/>
<xs:element name="ID" nillable="true" minOccurs="0">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:minLength value="0" fixed="false"/>
<xs:maxLength value="64" fixed="false"/>
<xs:whiteSpace value="preserve"/>
<xs:pattern value=".{0,64}"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="CallSite" nillable="true" minOccurs="0">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:minLength value="0" fixed="false"/>
<xs:maxLength value="64" fixed="false"/>
<xs:whiteSpace value="preserve"/>
<xs:pattern value=".{0,64}"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="Message" nillable="true" minOccurs="0">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:minLength value="0" fixed="false"/>
<xs:maxLength value="64" fixed="false"/>
<xs:whiteSpace value="preserve"/>
<xs:pattern value=".{0,64}"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="Exceptions" nillable="true" minOccurs="0">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:minLength value="0" fixed="false"/>
<xs:maxLength value="64" fixed="false"/>
<xs:whiteSpace value="preserve"/>
<xs:pattern value=".{0,64}"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="Tag1" nillable="true" minOccurs="0">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:minLength value="0" fixed="false"/>
<xs:maxLength value="64" fixed="false"/>
<xs:whiteSpace value="preserve"/>
<xs:pattern value=".{0,64}"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="Tag2" nillable="true" minOccurs="0">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:minLength value="0" fixed="false"/>
<xs:maxLength value="64" fixed="false"/>
<xs:whiteSpace value="preserve"/>
<xs:pattern value=".{0,64}"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
</xs:sequence>
</xs:complexType>
<xs:element name="ErrorDetail" type="tns:ErrorDetail" nillable="true"/>
</xs:schema>
XML
<ErrorDetailFault xmlns:a="http://url.org/Contract" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
<a:Time>2022-01-31T19:15:50.324427Z</a:Time>
<a:ID>b9201014-2b11-4523-a30c-55e3112d29d1</a:ID>
<a:CallSite>data</a:CallSite>
<a:Message/>
<a:Exceptions>Exception</a:Exceptions>
<a:Tag1>"data"</a:Tag1>
<a:Tag2/>
</ErrorDetailFault>
Any insights into what I've done incorrectly here?
Powershell validation attempt for additional context to troubleshooting this -- also passes on an expected failure
PS
function Test-XmlBySchema
{
[CmdletBinding()]
[OutputType([bool])]
param
(
[Parameter(Mandatory)]
[ValidateScript({ Test-Path -Path $_ })]
[ValidatePattern('\.xml')]
[string]$XmlFile,
[Parameter(Mandatory)]
[ValidateScript({ Test-Path -Path $_ })]
[ValidatePattern('\.xsd')]
[string]$SchemaPath,
[string]$NSUri
)
try
{
[xml]$xml = Get-Content $XmlFile
$xml.Schemas.Add($NSUri, $SchemaPath) | Out-Null
$xml.Validate($null)
Write-Verbose "Successfully validated $XmlFile against schema ($SchemaPath)"
$result = $true
}
catch
{
$err = $_.Exception.Message
$err
Write-Verbose "Failed to validate $XmlFile against schema ($SchemaPath)`nDetails: $err"
$result = $false
}
finally
{
$result
}
}
