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

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

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;

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.

@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;

See "mock_guard" definition.

Returns a number of calling of $method_name in $class_name_or_object.

Toru Yamaguchi <zigorou@cpan.org>

Yuji Shimada <xaicron at cpan.org>

Masaki Nakagawa <masaki@cpan.org>

cho45 <cho45@lowreal.net>

Test::MockObject

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

2024-07-04 perl v5.38.2