From: Justin Hunter <justin.d.hunter@gmail.com>
Date: Tue, 21 Apr 2009 23:53:04 +0000 (+0000)
Subject: move tests over and fix up load_optional_class
X-Git-Tag: v1.001000~23
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=dfb3a821c9cfc269abe789ca9049f52e4111511b;p=p5sagit%2FClass-C3-Componentised.git

move tests over and fix up load_optional_class
---

diff --git a/lib/Class/C3/Componentised.pm b/lib/Class/C3/Componentised.pm
index c216fe0..280dc06 100644
--- a/lib/Class/C3/Componentised.pm
+++ b/lib/Class/C3/Componentised.pm
@@ -178,15 +178,22 @@ successfully, and false if the class is not installed
 
 sub load_optional_class {
   my ($class, $f_class) = @_;
-  if ($class->ensure_class_found($f_class)) {
-    eval { $class->ensure_class_loaded($f_class) };
-    croak "Failed to load $f_class: $@" if $@;
+  eval { $class->ensure_class_loaded($f_class) };
+  my $err = $@;   # so we don't lose it
+  if (! $err) {
     return 1;
   }
-  return 0;
+  else {
+    my $fn = (join ('/', split ('::', $f_class) ) ) . '.pm';
+    if ($err =~ /Can't locate ${fn} in \@INC/ ) {
+      return 0;
+    }
+    else {
+      die $err;
+    }
+  }
 }
 
-
 =head1 AUTHOR
 
 Matt S. Trout and the DBIx::Class team
diff --git a/t/01-basic.t b/t/01-basic.t
index fea4c38..f655db8 100644
--- a/t/01-basic.t
+++ b/t/01-basic.t
@@ -4,11 +4,16 @@ use warnings;
 use FindBin;
 use Test::More;
 use Test::Exception;
+use Class::Inspector;
 
 use lib "$FindBin::Bin/lib";
 
+plan tests => 22;
 
-plan tests => 6;
+BEGIN {
+  package TestPackage::A;
+  sub some_method {}
+}
 
 use_ok('MyModule');
 
@@ -23,7 +28,70 @@ throws_ok { MyModule->load_components('+ClassC3ComponentFooThatShouldntExist');
 
 is(MyModule->new->message, "Foo MyModule", "it worked");
 
-is(MyModule->load_optional_class('ClassC3ComponentFooThatShouldntExist'), 0, "load_optional_class NonexistantClass returned false");
-is(MyModule->load_optional_class('MyModule::Plugin::Foo'), 1, "load_optional_class MyModule::Plugin::Foo (previously loaded module) returned true");
-is(MyModule->load_optional_class('MyModule::OwnComponent'), 1, "load_optional_class MyModule::OwnComponent (not previously loaded module) returned true");
+ok( MyModule->ensure_class_found('MyModule::Plugin::Foo'),
+    'loaded package MyModule::Plugin::Foo was found' );
+ok( !Class::Inspector->loaded('MyModule::OwnComponent'),
+    'MyModule::OwnComponent not loaded yet' );
+ok( MyModule->ensure_class_found('MyModule::OwnComponent'),
+    'package MyModule::OwnComponent was found' );
+ok( !Class::Inspector->loaded('MyModule::OwnComponent'),
+    'MyModule::OwnComponent not loaded by ensure_class_found()' );
+ok( MyModule->ensure_class_found('TestPackage::A'),
+    'anonymous package TestPackage::A found' );
+ok( !MyModule->ensure_class_found('FAKE::WONT::BE::FOUND'),
+        'fake package not found' );
 
+# Test load_optional_class
+my $retval = eval { MyModule->load_optional_class('ANOTHER::FAKE::PACKAGE') };
+ok( !$@, 'load_optional_class on a nonexistent class did not throw' );
+ok( !$retval, 'nonexistent package not loaded' );
+$retval = eval { MyModule->load_optional_class('MyModule::OwnComponent') };
+ok( !$@, 'load_optional_class on an existing class did not throw' );
+ok( $retval, 'MyModule::OwnComponent loaded' );
+eval { MyModule->load_optional_class('MyModule::ErrorComponent') };
+like( $@, qr/did not return a true value/,
+      'MyModule::ErrorComponent threw ok' );
+
+# Simulate a PAR environment
+{ 
+  my @code;
+  local @INC = @INC;
+  unshift @INC, sub {
+    if ($_[1] eq 'VIRTUAL/PAR/PACKAGE.pm') {
+      return (sub { return 0 unless @code; $_ = shift @code; 1; } );
+    }
+    else {
+      return ();
+    }
+  };
+
+  $retval = eval { MyModule->load_optional_class('FAKE::PAR::PACKAGE') };
+  ok( !$@, 'load_optional_class on a nonexistent PAR class did not throw' );
+  ok( !$retval, 'nonexistent PAR package not loaded' );
+  
+
+  # simulate a class which does load but does not return true
+  @code = (
+    q/package VIRTUAL::PAR::PACKAGE;/,
+    q/0;/,
+  );
+
+  $retval = eval { MyModule->load_optional_class('VIRTUAL::PAR::PACKAGE') };
+  ok( $@, 'load_optional_class of a no-true-returning PAR module did throw' );
+  ok( !$retval, 'no-true-returning PAR package not loaded' );
+  
+  # simulate a normal class (no one adjusted %INC so it will be tried again
+  @code = (
+    q/package VIRTUAL::PAR::PACKAGE;/,
+    q/1;/,
+  );
+
+  $retval = eval { MyModule->load_optional_class('VIRTUAL::PAR::PACKAGE') };
+  ok( !$@, 'load_optional_class of a PAR module did not throw' );
+  ok( $retval, 'PAR package "loaded"' );
+  
+  # see if we can still load stuff with the coderef present
+  $retval = eval { MyModule->load_optional_class('Class::C3') };
+  ok( !$@, 'load_optional_class did not throw' ) || diag $@;
+  ok( $retval, 'Class::C3 loaded' );
+}
diff --git a/t/lib/MyModule/ErrorComponent.pm b/t/lib/MyModule/ErrorComponent.pm
new file mode 100644
index 0000000..9f94b25
--- /dev/null
+++ b/t/lib/MyModule/ErrorComponent.pm
@@ -0,0 +1,8 @@
+package # hide from PAUSE
+    MyModule::ErrorComponent;
+use warnings;
+use strict;
+
+# this is missing on purpose
+# 1;
+