use XML::Schematron;

my $pseudotron = XML::Schematron->new_with_traits( traits => ['LibXSLT
+'], schema => "$schema_file");
my $messages = $pseudotron->verify($xml_file);

print "$messages\n";
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"Test suite" means https://metacpan.org/source/KHAMPTON/XML-Schematron-1.09/t/001basic.t, the stuff that runs before you install module

Thanks for pointing out. I really don't go though such testing before. I got following error for test case you mentioned:

ok 1 - use XML::Schematron;
ok 2 # skip XML::XPath not installed
ok 3 - 'Schematron instance created' isa 'XML::Schematron'
Could not create file parser context for file "t\data\order.scm": No s
+uch file o
r directory at C:/strawberry/perl/vendor/lib/XML/LibXML/SAX.pm line 10
+1.
 at C:/strawberry/perl/site/lib/XML/Schematron/Schema.pm line 44.
# Tests were run but no plan was declared and done_testing() was not s
+een.
# Looks like your test exited with 2 just after 3.
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XML::XPath is not installed. I will install it and lets see what happens.

Update:
After installing XML::XPath and running same case again following error:

ok 1 - use XML::Schematron;
ok 2 - 'Schematron instance created' isa 'XML::Schematron'
Cannot open file 't/data/order.xml' at C:/strawberry/perl/site/lib/XML
+/XPath.pm
line 53.
# Tests were run but no plan was declared and done_testing() was not s
+een.
# Looks like your test exited with 2 just after 2.
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Update 2
cpanm --test-only XML::Schematron::LibXSLT gives following output

--> Working on XML::Schematron::LibXSLT
Fetching http://www.cpan.org/authors/id/K/KH/KHAMPTON/XML-Schematron-1
+.09.tar.gz
 ... OK
Configuring XML-Schematron-1.09 ... OK
Building and testing XML-Schematron-1.09 ... OK
Successfully tested XML-Schematron-1.09
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