cleaned up lexical test

removed useless test dependency
replaced commented out test with good ones
added perl version dependency
general tidying

t/lexical.t

@@ -1,7 +1,8 @@
 use Test::More 0.88;
-use Test::Exception;
 use lib 't/lib';
 
+BEGIN { plan skip_all => 'Perl version too low to test switch feature' unless $] >= 5.010 };
+
 use perl5-tlex;
 
 
@@ -11,8 +12,8 @@ like $@, qr/requires explicit package name/, 'got strict';
 eval '6 + "fred"';
 like $@, qr/isn't numeric/, 'got fatal warnings';
 
-#eval 'try {die} catch {};';
-#is $@, '', 'try/catch syntax imported';
+eval 'given (1) { when (1) {} }';
+is $@, '', 'switch syntax imported';
 
 
 done_testing;

t/lib/perl5/tlex.pm

@@ -3,10 +3,9 @@ use base 'perl5';
 
 sub imports
 {
-    strict => [qw(subs refs vars)],
-    warnings => [FATAL => 'all'],         # easier to test
-    #TryCatch =>
-    # maybe more here later
+    strict   => [qw(subs refs vars)],
+    warnings => [FATAL => 'all'],           # easier to test
+    feature  => ['switch'],                 # means we must be 5.10 or higher
 }
 
 1;