Add some locally tests.

xt/00.vars.t

@@ -0,0 +1,12 @@
+#!perl
+
+use strict;
+use warnings;
+use utf8;
+
+use Test::More;
+
+eval "use Test::Vars";
+plan skip_all => "Test::Vars required for testing variables" if $@;
+
+all_vars_ok();

xt/01.local_functions.t

@@ -0,0 +1,12 @@
+#!perl
+
+use strict;
+use warnings;
+use utf8;
+
+use Test::More;
+
+eval "use Test::LocalFunctions";
+plan skip_all => "Test::LocalFunctions required for testing variables" if $@;
+
+all_local_functions_ok();

xt/999.perlcritic.t

@@ -0,0 +1,9 @@
+#!perl
+
+if (!require Test::Perl::Critic) {
+    Test::More::plan(
+        skip_all => "Test::Perl::Critic required for testing PBP compliance"
+    );
+}
+
+Test::Perl::Critic::all_critic_ok();