NAME
Perl::Critic::Policy::ProhibitNoWarningsRedefine - Mock with Test::MockModule, don't clobber the symbol table by hand.
VERSION
version 1.000
Perl::Critic::Policy::ProhibitNoWarningsRedefine
Switching off the redefine warning has exactly one purpose: assigning over somebody else's subroutine, usually in a test.
no warnings 'redefine';
local *Some::Module::thing = sub { 1 };The warning is the only thing standing between you and a typo. Misspell the package or the sub and that line silently installs a brand new symbol nobody calls, the test passes, and it goes on passing after the real code is deleted.
Test::MockModule in strict mode does the same job and checks the sub exists first, unmocks itself at scope exit, and does not need the warning switched off:
my $mock = Test::MockModule->new('Some::Module');
$mock->redefine( thing => sub { 1 } );For a package with no .pm of its own -- a modulino loaded out of bin/ -- pass no_auto => 1 so it doesn't go looking for the file.
PROHIBITED
no warnings 'redefine';
no warnings qw{redefine once};
no warnings; # this switches off redefine tooALLOWED
no warnings 'once';
no warnings qw{uninitialized numeric};CONFIGURATION
categories-
Space separated list of warning categories that may not be switched off. Defaults to
redefine.[ProhibitNoWarningsRedefine] categories = redefine prototype
CAVEATS
A bare no warnings; is flagged because it takes the guarded category with it, which may not be why it was written. That is the point: say which categories you mean.
METHODS
supported_parameters
categories, the warning categories that may not be switched off.
default_severity
SEVERITY_HIGH
default_themes
maintenance, tests
applies_to
PPI::Statement::Include
violates
Standard Perl::Critic::Policy interface. Returns a violation for a no warnings that switches off one of the guarded categories, whether it names it or takes it along with everything else.
BUGS
Please report any bugs or feature requests on the bugtracker website https://github.com/teodesian/perl-critic-policy-prohibitnowarningsredefine/issues
When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.
AUTHORS
Current Maintainers:
George S. Baugh <teodesian@gmail.com>
COPYRIGHT AND LICENSE
Copyright (c) 2026 Troglodyne LLC
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.