Test::SubCalls(3)

NAME
Test::SubCalls - Track the number of times subs are called

SYNOPSIS
  use Test::SubCalls;

  # Start tracking calls to a named sub
  sub_track( 'Foo::foo' );

  # Run some test code
  ...

  # Test that some sub deep in the codebase was called
  # a specific number of times.
  sub_calls( 'Foo::foo', 5 );
  sub_calls( 'Foo::foo', 5, 'Use a custom test message' );

  # Reset the counts for one or all subs
  sub_reset( 'Foo::foo' );
  sub_reset_all();

DESCRIPTION
There are a number of different situations (like testing caching code) where you want to want to do a number of tests, and then verify that some underlying subroutine deep within the code was called a specific number of times.

This module provides a number of functions for doing testing in this way in association with your normal Test::More (or similar) test scripts.

FUNCTIONS
In the nature of test modules, all functions are exported by default.

  sub_track $subname
The "sub_track" function creates a new call tracker for a named function.

The sub to track must be provided by name, references to the function itself are insufficient.

Returns true if added, or dies on error.

  sub_calls $subname, $expected_calls [, $message ]
The "sub_calls" function is the primary (and only) testing function provided by "Test::SubCalls". A single call will represent one test in your plan.

It takes the subroutine name as originally provided to "sub_track", the expected number of times the subroutine should have been called, and an optional test message.

If no message is provided, a default message will be provided for you.

Test is ok if the number of times the sub has been called matches the expected number, or not ok if not.

  sub_reset $subname
To prevent repeat users from having to take before and after counts when they start testing from after zero, the "sub_reset" function has been provided to reset a sub call counter to zero.

Returns true or dies if the sub name is invalid or not currently tracked.

  sub_reset_all
Provided mainly as a convenience, the "sub_reset_all" function will reset all the counters currently defined.

Returns true.

SUPPORT
Bugs should be submitted via the CPAN bug tracker, located at

<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Test-SubCalls>

For other issues, or commercial enhancement or support, contact the author.

AUTHOR
Adam Kennedy <adamk@cpan.org>

SEE ALSO
<http://ali.as/>, Test::Builder, Test::More, Hook::LexWrap

COPYRIGHT
Copyright 2005 - 2009 Adam Kennedy.

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

The full text of the license can be found in the LICENSE file included with this module.