Author image Grant Street Group
and 3 contributors


Test2::Plugin::TodoFailOnSuccess - Report failure if a TODO test unexpectedly passes


version 0.0.2


  package My::Tests;

  use Test2::V0;

  use Test2::Plugin::TodoFailOnSuccess;  # report unexpected TODO success

  use Test2::Tools::Basic;    # for "todo" sub
  use Test2::Todo;            # for "todo" object

  sub test_something
      # Lexical scope TODO:
          my $todo = todo 'Not expected to pass';
          is $value, $expected_value, "Got expected value";

      # Coderef TODO:
      todo 'Not expected to pass either' => sub {
          is $value, $expected_value, "Got expected value";

      # Object-oriented TODO:
      my $todo = Test2::Todo->new( reason => 'Still not expected to pass' );
      is $value, $expected_value, "Got expected value";


Wrapping a test with TODO is a conventient way to avoid being tripped up by test failures until you have a chance to get the code working. It normally won't hurt to leave the TODO in place after the tests start passing, but if you forget to remove the TODO at that point, a subsequent code change could start causing new test failures which would then go unreported and possibly unnoticed.

This module provides a mechanism to trigger explicit test failures when TODO tests unexpectedly pass, so that you have an opportunity to remove the TODO.

If a TODO test passes, a failure will be reported with a message containing the test description, equivalent to doing:

  fail "TODO passed unexpectedly: $test_description";

which might appear in your TAP output along with the TODO reason as something like:

  not ok 3 - TODO passed unexpectedly: Got expected value # TODO Not expected to pass

Note that due to the additional fail being reported, you may see messages about your planned number of tests being exceeded, for example:

  # Did not follow plan: expected 5, ran 6.

There are no options or arguments, just use Test2::Plugin::TodoFailOnSuccess in your test file.


Grant Street Group <>


This software is Copyright (c) 2019 by Grant Street Group.

This is free software, licensed under:

  The Artistic License 2.0 (GPL Compatible)


  • Larry Leszczynski <>

  • Mark Flickinger <>