perl-test-xml and deps: new packages (#42870)

- Adds perl-test-xml and dependency:
- Adds perl-xml-semanticdiff

var/spack/repos/builtin/packages/perl-test-xml/package.py

@@ -0,0 +1,31 @@
+# Copyright 2013-2024 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack.package import *
+
+
+class PerlTestXml(PerlPackage):
+    """Compare XML in perl tests"""
+
+    homepage = "https://metacpan.org/pod/Test::XML"
+    url = "https://cpan.metacpan.org/authors/id/S/SE/SEMANTICO/Test-XML-0.08.tar.gz"
+
+    maintainers("EbiArnie")
+
+    license("Artistic-1.0-Perl OR GPL-1.0-or-later")
+
+    version("0.08", sha256="eb54cc23cdec860d3ad8ac8a697cbf038d0dec95229912d975c301890ca83ee2")
+
+    depends_on("perl@5.6.0:", type=("build", "link", "run", "test"))
+    depends_on("perl-xml-parser@2.34:", type=("build", "run", "test"))
+    depends_on("perl-xml-semanticdiff@0.95:", type=("build", "run", "test"))
+
+    def test_use(self):
+        """Test 'use module'"""
+        options = ["-we", 'use strict; use Test::XML; print("OK\n")']
+
+        perl = self.spec["perl"].command
+        out = perl(*options, output=str.split, error=str.split)
+        assert "OK" in out

var/spack/repos/builtin/packages/perl-xml-semanticdiff/package.py

@@ -0,0 +1,30 @@
+# Copyright 2013-2024 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack.package import *
+
+
+class PerlXmlSemanticdiff(PerlPackage):
+    """Perl extension for comparing XML documents."""
+
+    homepage = "https://metacpan.org/pod/XML::SemanticDiff"
+    url = "https://cpan.metacpan.org/authors/id/P/PE/PERIGRIN/XML-SemanticDiff-1.0007.tar.gz"
+
+    maintainers("EbiArnie")
+
+    license("Artistic-1.0-Perl OR GPL-1.0-or-later")
+
+    version("1.0007", sha256="05fdefefbbc3f6b62fc7c9b5fabafb6b695ed68f0a3d958577251d1f0402a0f5")
+
+    depends_on("perl@5.8.0:", type=("build", "link", "run", "test"))
+    depends_on("perl-xml-parser", type=("build", "run", "test"))
+
+    def test_use(self):
+        """Test 'use module'"""
+        options = ["-we", 'use strict; use XML::SemanticDiff; print("OK\n")']
+
+        perl = self.spec["perl"].command
+        out = perl(*options, output=str.split, error=str.split)
+        assert "OK" in out