Improve parsing of ComplexTypeSimpleContent according to XSD rules.

Author: veewee

src/Xml/Reader/DocumentToLookupArrayReader.php

@@ -7,6 +7,7 @@
 use DOMNode;
 use Soap\Encoding\Xml\Node\Element;
 use Soap\Encoding\Xml\Node\ElementList;
+use VeeWee\Xml\Xmlns\Xmlns;
 use function VeeWee\Xml\Dom\Predicate\is_element;
 
 /**
@@ -50,8 +51,11 @@ public function __invoke(Element $xml): array
 
         // It might be possible that the child is a regular textNode.
         // In that case, we use '_' as the key and the value of the textNode as value.
-        if (!$nodes && $content = trim($root->textContent)) {
-            $nodes['_'] = $content;
+        if (!$nodes) {
+            $nodes['_'] = match(true) {
+                $root->getAttributeNS(Xmlns::xsi()->value(), 'nil') === 'true' => null,
+                default => $root->textContent,
+            };
         }
 
         // All attributes also need to be added as key => value pairs.

tests/PhpCompatibility/Schema062Variant1Test.php

@@ -0,0 +1,49 @@
+<?php
+declare(strict_types=1);
+
+namespace Soap\Encoding\Test\PhpCompatibility;
+
+use PHPUnit\Framework\Attributes\CoversClass;
+use Soap\Encoding\Decoder;
+use Soap\Encoding\Driver;
+use Soap\Encoding\Encoder;
+
+#[CoversClass(Driver::class)]
+#[CoversClass(Encoder::class)]
+#[CoversClass(Decoder::class)]
+final class Schema062Variant1Test extends AbstractCompatibilityTests
+{
+    protected string $schema = <<<EOXML
+    <complexType name="testType">
+        <simpleContent>
+            <restriction base="string">
+                <attribute name="int" type="int"/>
+            </restriction>
+        </simpleContent>
+    </complexType>
+    EOXML;
+    protected string $type = 'type="testType"';
+
+    protected function calculateParam(): mixed
+    {
+        return (object)[
+            '_' => '',
+            'int' => 123
+        ];
+    }
+
+    protected function expectXml(): string
+    {
+        return <<<XML
+        <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:tns="http://test-uri/"
+                           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                           xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/">
+            <SOAP-ENV:Body SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
+                <tns:test>
+                    <testParam int="123" xsi:type="tns:testType"/>
+                </tns:test>
+            </SOAP-ENV:Body>
+        </SOAP-ENV:Envelope>
+        XML;
+    }
+}

tests/PhpCompatibility/Schema062Variant2Test.php

@@ -0,0 +1,49 @@
+<?php
+declare(strict_types=1);
+
+namespace Soap\Encoding\Test\PhpCompatibility;
+
+use PHPUnit\Framework\Attributes\CoversClass;
+use Soap\Encoding\Decoder;
+use Soap\Encoding\Driver;
+use Soap\Encoding\Encoder;
+
+#[CoversClass(Driver::class)]
+#[CoversClass(Encoder::class)]
+#[CoversClass(Decoder::class)]
+final class Schema062Variant2Test extends AbstractCompatibilityTests
+{
+    protected string $schema = <<<EOXML
+    <complexType name="testType">
+        <simpleContent>
+            <restriction base="string">
+                <attribute name="int" type="int"/>
+            </restriction>
+        </simpleContent>
+    </complexType>
+    EOXML;
+    protected string $type = 'type="testType"';
+
+    protected function calculateParam(): mixed
+    {
+        return (object)[
+            '_' => null,
+            'int' => 123
+        ];
+    }
+
+    protected function expectXml(): string
+    {
+        return <<<XML
+        <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:tns="http://test-uri/"
+                           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                           xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/">
+            <SOAP-ENV:Body SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
+                <tns:test>
+                    <testParam xsi:nil="true" int="123" xsi:type="tns:testType"/>
+                </tns:test>
+            </SOAP-ENV:Body>
+        </SOAP-ENV:Envelope>
+        XML;
+    }
+}