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Test::Mock::Guard(3pm) User Contributed Perl Documentation Test::Mock::Guard(3pm)

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.

Class name or object to mock.
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.

2014-07-19 perl v5.40.0