Attempt to load extra testing modules only once

diff --git a/Changes b/Changes
index c171e47..b6c3d27 100644 (file)
--- a/Changes
+++ b/Changes
@@ -1,3 +1,4 @@
+  - check only once for presence of extra testing prereqs
 1.004002 - 2012-09-08
   - add better rationale for the extra testing heuristic
 1.004001 - 2012-07-12

diff --git a/lib/strictures.pm b/lib/strictures.pm
index f890487..2ef91fe 100644 (file)
--- a/lib/strictures.pm
+++ b/lib/strictures.pm
@@ -21,7 +21,7 @@ sub VERSION {
   shift->SUPER::VERSION(@_);
 }
 
-my $extras_load_warned;
+my $extra_load_states;
 
 our $Smells_Like_VCS = (-e '.git' || -e '.svn'
   || (-e '../../dist.ini' && (-e '../../.git' || -e '../../.svn')));
@@ -43,25 +43,22 @@ sub import {
     }
   };
   if ($extra_tests) {
-    my @failed;
-    if (eval { require indirect; 1 }) {
-      indirect->unimport(':fatal');
-    } else {
-      push @failed, 'indirect';
-    }
-    if (eval { require multidimensional; 1 }) {
-      multidimensional->unimport;
-    } else {
-      push @failed, 'multidimensional';
-    }
-    if (eval { require bareword::filehandles; 1 }) {
-      bareword::filehandles->unimport;
-    } else {
-      push @failed, 'bareword::filehandles';
-    }
-    if (@failed and not $extras_load_warned++) {
-      my $failed = join ' ', @failed;
-      warn <<EOE;
+    $extra_load_states ||= do {
+
+      my (%rv, @failed);
+      for my $mod (qw(indirect multidimensional bareword::filehandles)) {
+        eval "require $mod; \$rv{'$mod'} = 1;" or do {
+          push @failed, $mod;
+
+          # courtesy of the 5.8 require bug
+          $mod =~ s|::|/|g;
+          delete $INC{"$mod.pm"};
+        };
+      }
+
+      if (@failed) {
+        my $failed = join ' ', @failed;
+        print STDERR <<EOE;
 strictures.pm extra testing active but couldn't load all modules. Missing were:
 
   $failed
@@ -73,7 +70,14 @@ of a strictures-using module you need to run:
 
 but these modules are not required by your users.
 EOE
-    }
+      }
+
+      \%rv;
+    };
+
+    indirect->unimport(':fatal') if $extra_load_states->{indirect};
+    multidimensional->unimport if $extra_load_states->{multidimensional};
+    bareword::filehandles->unimport if $extra_load_states->{'bareword::filehandles'};
   }
 }