Library to test long strings

https://metacpan.org/release/Test-LongString

Perl module to interact with a t/test_manifest file

https://metacpan.org/release/Test-Manifest

Check for memory leaks and circular memory references

https://metacpan.org/release/Test-Memory-Cycle

Override subroutines in a module for unit testing

https://metacpan.org/release/Test-MockModule

Tests remote URLs or local web files

https://metacpan.org/release/Test-MockObject

Replaces random number generation with non-random number generation

https://metacpan.org/release/Test-MockRandom

Replaces actual time with simulated time

https://metacpan.org/release/Test-MockTime

Replaces actual time with simulated high resolution time

https://metacpan.org/release/Test-MockTime-HiRes

Enhancing Test::More for UTF-8-based projects

https://metacpan.org/release/Test-More-UTF8

Perl extension for most commonly needed test functions and features

https://metacpan.org/release/Test-Most

Skip tests when modules not available

https://metacpan.org/release/Test-Needs

Check the presence of tabs in your project

https://metacpan.org/release/Test-NoTabs

Hide and store warnings while running test scripts

http://search.cpan.org/dist/Test-NoWarnings/

Compare the difference between two numbers within a specified amount

https://metacpan.org/release/Test-Number-Delta

Thoroughly testing objects via registered handlers

https://metacpan.org/release/Test-Object

Utilities to test STDOUT and STDERR messages

https://metacpan.org/release/Test-Output

Use Perl::Critic in test programs

https://metacpan.org/release/Test-Perl-Critic

Check for POD errors in files

https://metacpan.org/release/Test-Pod

Check for pod coverage in your distribution

https://metacpan.org/release/Test-Pod-Coverage

Assert reference counts on objects

https://metacpan.org/release/Test-Refcount

Perl extension for checking to see if the module can be loaded

https://metacpan.org/release/Test-Requires

Test network connectivity before functional tests

https://metacpan.org/release/Test-RequiresInternet

Composable, reusable tests with roles and Moo

https://metacpan.org/release/Test-Roo

Test::Script - Cross-platform basic tests for scripts

https://metacpan.org/release/Test-Script

Perl extension for fork test

https://metacpan.org/release/Test-SharedFork

Basic utilities for writing tests in perl

https://metacpan.org/release/Test-Simple

Check for spelling errors in POD files

https://metacpan.org/release/Test-Spelling

Test and report on use strict/warnings coverage

https://metacpan.org/release/Test-Strict

Track the number of times subs are called

https://metacpan.org/release/Test-SubCalls

Testing TCP program

https://metacpan.org/release/Test-TCP

Tools to test taintedness

https://metacpan.org/release/Test-Taint

Helps to test various Test::Builder derivatives

http://search.cpan.org/dist/Test-Tester/

Perl extension to override time()/sleep() core functions for testing

https://metacpan.org/release/Test-Time

Perl test module to test/assert response times

https://metacpan.org/release/Test-Timer

Trap exit codes, exceptions, output, etc

https://metacpan.org/release/Test-Trap

PerlUnit testing framework

https://metacpan.org/release/Test-Unit

Do use_ok() for all the MANIFESTed modules

https://metacpan.org/release/Test-UseAllModules

Check to see that version in modules are sane

https://metacpan.org/release/Test-Version

Declarative testing for your web app

https://metacpan.org/release/Test-WWW-Declare

Testing-specific WWW::Mechanize subclass

https://metacpan.org/release/Test-WWW-Mechanize

Perl extension to test methods for warnings

https://metacpan.org/release/Test-Warn

Test for warnings and the lack of them

https://metacpan.org/release/Test-Warnings

Test that freed memory objects were, indeed, freed

https://metacpan.org/release/Test-Weaken

Test fallback behaviour in absence of modules

https://metacpan.org/release/Test-Without-Module

Compare XML in perl tests

https://metacpan.org/release/Test-XML

Validate XML and XHTML

https://metacpan.org/release/Test-XML-Valid

Testing Module for YAML Implementations

https://metacpan.org/release/Test-YAML

Validation of the META.yml file in a distribution

https://metacpan.org/release/Test-YAML-Meta

Test for valid YAML

https://metacpan.org/release/Test-YAML-Valid

Handy UTF-8 tests

https://metacpan.org/release/Test-utf8