support/testing: add perl-xml-libxml test

Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
Reviewed-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
[https://gitlab.com/RicardoMartincoski/buildroot/-/jobs/124872335]
Tested-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

support/testing/tests/package/test_perl_xml_libxml.py

@@ -0,0 +1,22 @@
+from tests.package.test_perl import TestPerlBase
+
+
+class TestPerlXMLLibXML(TestPerlBase):
+    """
+    package:
+        XML-LibXML
+    direct dependencies:
+        XML-NamespaceSupport
+        XML-SAX
+        XML-SAX-Base
+    """
+
+    config = TestPerlBase.config + \
+        """
+        BR2_PACKAGE_PERL=y
+        BR2_PACKAGE_PERL_XML_LIBXML=y
+        """
+
+    def test_run(self):
+        self.login()
+        self.module_test("XML::LibXML")