From: Dave Rolsky <autarch@urth.org>
Date: Sun, 21 Jun 2009 20:32:40 +0000 (-0500)
Subject: add use of BUILDARGS to exercises for section 01
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=f7da468c69a669dae20adddc9fa6aca50d6d2718;p=gitmo%2Fmoose-presentations.git

add use of BUILDARGS to exercises for section 01
---

diff --git a/moose-class/exercises/answers/01-classes/Person.pm b/moose-class/exercises/answers/01-classes/Person.pm
index 5e79748..00e0f16 100644
--- a/moose-class/exercises/answers/01-classes/Person.pm
+++ b/moose-class/exercises/answers/01-classes/Person.pm
@@ -5,6 +5,20 @@ use Moose;
 has first_name => ( is => 'rw' );
 has last_name  => ( is => 'rw' );
 
+sub BUILDARGS {
+    my $class = shift;
+
+    if ( @_ == 1 && 'ARRAY' eq ref $_[0] ) {
+        return {
+            first_name => $_[0]->[0],
+            last_name  => $_[0]->[1],
+        };
+    }
+    else {
+        return $class->SUPER::BUILDARGS(@_);
+    }
+}
+
 sub full_name {
     my $self = shift;
 
diff --git a/moose-class/exercises/t/01-classes.t b/moose-class/exercises/t/01-classes.t
index b781dc9..dd11fab 100644
--- a/moose-class/exercises/t/01-classes.t
+++ b/moose-class/exercises/t/01-classes.t
@@ -11,6 +11,12 @@
 # method should return the first and last name separated by a string
 # ("Jon Smith").
 #
+# Write a BUILDARGS method for this class which allows the caller to
+# pass a two argument array reference. These should be assigned to the
+# first and last name respectively.
+#
+#   Person->new( [ 'Lisa', 'Smith' ] );
+#
 # Create an Employee class in lib/Employee.pm
 #
 # The Employee class is a subclass of Person
diff --git a/moose-class/exercises/t/lib/MooseClass/Tests.pm b/moose-class/exercises/t/lib/MooseClass/Tests.pm
index 0ac9921..aba82cf 100644
--- a/moose-class/exercises/t/lib/MooseClass/Tests.pm
+++ b/moose-class/exercises/t/lib/MooseClass/Tests.pm
@@ -265,6 +265,14 @@ sub person01 {
 
     is( $person->full_name, 'Bilbo Baggins',
         'full_name() is correctly implemented' );
+
+    $person = Person->new( [ qw( Lisa Smith ) ] );
+    is( $person->first_name, 'Lisa', 'set first_name from two-arg arrayref' );
+    is( $person->last_name, 'Smith', 'set last_name from two-arg arrayref' );
+
+    eval { Person->new( sub { 'foo' } ) };
+    like( $@, qr/\QSingle parameters to new() must be a HASH ref/,
+          'Person constructor still rejects bad parameters' );
 }
 
 sub employee01 {