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[dh-make-perl] / dev / i386 / libtest-simple-perl / libtest-simple-perl-0.80 / lib / Test / Builder / Module.pm

diff --git a/dev/i386/libtest-simple-perl/libtest-simple-perl-0.80/lib/Test/Builder/Module.pm b/dev/i386/libtest-simple-perl/libtest-simple-perl-0.80/lib/Test/Builder/Module.pm
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+package Test::Builder::Module;
+
+use strict;
+
+use Test::Builder;
+
+require Exporter;
+our @ISA = qw(Exporter);
+
+our $VERSION = '0.80';
+
+# 5.004's Exporter doesn't have export_to_level.
+my $_export_to_level = sub {
+      my $pkg = shift;
+      my $level = shift;
+      (undef) = shift;                  # redundant arg
+      my $callpkg = caller($level);
+      $pkg->export($callpkg, @_);
+};
+
+
+=head1 NAME
+
+Test::Builder::Module - Base class for test modules
+
+=head1 SYNOPSIS
+
+  # Emulates Test::Simple
+  package Your::Module;
+
+  my $CLASS = __PACKAGE__;
+
+  use base 'Test::Builder::Module';
+  @EXPORT = qw(ok);
+
+  sub ok ($;$) {
+      my $tb = $CLASS->builder;
+      return $tb->ok(@_);
+  }
+  
+  1;
+
+
+=head1 DESCRIPTION
+
+This is a superclass for Test::Builder-based modules.  It provides a
+handful of common functionality and a method of getting at the underlying
+Test::Builder object.
+
+
+=head2 Importing
+
+Test::Builder::Module is a subclass of Exporter which means your
+module is also a subclass of Exporter.  @EXPORT, @EXPORT_OK, etc...
+all act normally.
+
+A few methods are provided to do the C<use Your::Module tests => 23> part
+for you.
+
+=head3 import
+
+Test::Builder::Module provides an import() method which acts in the
+same basic way as Test::More's, setting the plan and controling
+exporting of functions and variables.  This allows your module to set
+the plan independent of Test::More.
+
+All arguments passed to import() are passed onto 
+C<< Your::Module->builder->plan() >> with the exception of 
+C<import =>[qw(things to import)]>.
+
+    use Your::Module import => [qw(this that)], tests => 23;
+
+says to import the functions this() and that() as well as set the plan
+to be 23 tests.
+
+import() also sets the exported_to() attribute of your builder to be
+the caller of the import() function.
+
+Additional behaviors can be added to your import() method by overriding
+import_extra().
+
+=cut
+
+sub import {
+    my($class) = shift;
+    
+    # Don't run all this when loading ourself.
+    return 1 if $class eq 'Test::Builder::Module';
+
+    my $test = $class->builder;
+
+    my $caller = caller;
+
+    $test->exported_to($caller);
+
+    $class->import_extra(\@_);
+    my(@imports) = $class->_strip_imports(\@_);
+
+    $test->plan(@_);
+
+    $class->$_export_to_level(1, $class, @imports);
+}
+
+
+sub _strip_imports {
+    my $class = shift;
+    my $list  = shift;
+
+    my @imports = ();
+    my @other   = ();
+    my $idx = 0;
+    while( $idx <= $#{$list} ) {
+        my $item = $list->[$idx];
+
+        if( defined $item and $item eq 'import' ) {
+            push @imports, @{$list->[$idx+1]};
+            $idx++;
+        }
+        else {
+            push @other, $item;
+        }
+
+        $idx++;
+    }
+
+    @$list = @other;
+
+    return @imports;
+}
+
+
+=head3 import_extra
+
+    Your::Module->import_extra(\@import_args);
+
+import_extra() is called by import().  It provides an opportunity for you
+to add behaviors to your module based on its import list.
+
+Any extra arguments which shouldn't be passed on to plan() should be 
+stripped off by this method.
+
+See Test::More for an example of its use.
+
+B<NOTE> This mechanism is I<VERY ALPHA AND LIKELY TO CHANGE> as it
+feels like a bit of an ugly hack in its current form.
+
+=cut
+
+sub import_extra {}
+
+
+=head2 Builder
+
+Test::Builder::Module provides some methods of getting at the underlying
+Test::Builder object.
+
+=head3 builder
+
+  my $builder = Your::Class->builder;
+
+This method returns the Test::Builder object associated with Your::Class.
+It is not a constructor so you can call it as often as you like.
+
+This is the preferred way to get the Test::Builder object.  You should
+I<not> get it via C<< Test::Builder->new >> as was previously
+recommended.
+
+The object returned by builder() may change at runtime so you should
+call builder() inside each function rather than store it in a global.
+
+  sub ok {
+      my $builder = Your::Class->builder;
+
+      return $builder->ok(@_);
+  }
+
+
+=cut
+
+sub builder {
+    return Test::Builder->new;
+}
+
+
+1;