Test::Mock::Guard(3)

NAME
Test::Mock::Guard - Simple mock test library using RAII.

SYNOPSIS
  use Test::More;
  use Test::Mock::Guard qw(mock_guard);

  package Some::Class;

  sub new { bless {} => shift }
  sub foo { "foo" }
  sub bar { 1; }

  package main;

  {
      my $guard = mock_guard( 'Some::Class', { foo => sub { "bar" }, bar => 10 } );
      my $obj = Some::Class->new;
      is( $obj->foo, "bar" );
      is( $obj->bar, 10 );
  }

  my $obj = Some::Class->new;
  is( $obj->foo, "foo" );
  is( $obj->bar, 1 );

  done_testing;

DESCRIPTION
Test::Mock::Guard is mock test library using RAII. This module is able to change method behavior by each scope. See SYNOPSIS's sample code.

EXPORT FUNCTION

  mock_guard( @class_defs )
@class_defs have the following format.

key Class name or object to mock.

value
    Hash reference. Keys are method names; values are code references or scalars. If the value is code reference, it is used as a method. If the value is a scalar, the method will return the specified value.

You can mock instance methods as well as class methods (this feature was provided by cho45):

  use Test::More;
  use Test::Mock::Guard qw(mock_guard);

  package Some::Class;

  sub new { bless {} => shift }
  sub foo { "foo" }

  package main;

  my $obj1 = Some::Class->new;
  my $obj2 = Some::Class->new;

  {
      my $obj2 = Some::Class->new;
      my $guard = mock_guard( $obj2, { foo => sub { "bar" } } );
      is ($obj1->foo, "foo", "obj1 has not changed" );
      is( $obj2->foo, "bar", "obj2 is mocked" );
  }

  is( $obj1->foo, "foo", "obj1" );
  is( $obj2->foo, "foo", "obj2" );

  done_testing;

METHODS

  new( @class_defs )
See "mock_guard" definition.

  call_count( $class_name_or_object, $method_name )
Returns a number of calling of $method_name in $class_name_or_object.

AUTHOR
Toru Yamaguchi <zigorou@cpan.org>

Yuji Shimada <xaicron at cpan.org>

Masaki Nakagawa <masaki@cpan.org>

THANKS TO
cho45 <cho45@lowreal.net>

SEE ALSO
Test::MockObject

LICENSE
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.