This module can test routines that manipulate random numbers by providing a known output from rand. Given a list of seeds with srand, it will return each in turn. After seeded random numbers are exhausted, it will always return 0. Seed numbers must be of a form that meets the expected output from rand as called with no arguments: they must be between 0 (inclusive) and 1 (exclusive). In order to facilitate generating and testing a nearly-one number, this module exports the function oneish, which returns a number just fractionally less than one.

Test::Output provides a simple interface for testing output sent to STDOUT or STDERR. A number of different utilities are included to try and be as flexible as possible to the tester.

Test::TrailingSpace tests for trailing spaces in Perl source files.

Test::Requires checks to see if the module can be loaded. If this fails, then rather than failing tests this skips all tests.

Test::NoTabs lets you check the presence of tabs in your perl code.

Test::RunValgind checks weather Valgrind does not detect errors (such as memory leaks) in an arbitrary binary executable.

Test::Needs allows you to skip test scripts if modules are not available. The requested modules will be loaded, and optionally have their versions checked. If the module is missing, the test script will be skipped. Modules that are found but fail to compile will exit with an error rather than skip.

If used in a subtest, the remainder of the subtest will be skipped.

This package provides a rich set of tools, plugins, bundles, etc built upon the Test2 testing library.

Loading this plugin causes your tests to fail if there any warnings while they run. Each warning generates a new failing test and the warning content is outputted via diag.

This Perl module is intended to easily test network connectivity to non-local Internet resources before functional tests begin. If the sockets cannot connect to the specified hosts and ports, the exception is caught and reported, and the tests skipped.

The Compress::Bzip2 module provides a Perl interface to the Bzip2 compression library. A relevant subset of the functionality provided by Bzip2 is available in this module.

PerlIO::gzip provides a PerlIO layer that manipulates files in the format used by the gzip program.

It allows you to extract any archive file of the type .tar, .tar.gz, .gz, .Z, tar.bz2, .tbz, .bz2, .zip, .xz,, .txz, .tar.xz or .lzma without having to worry how it does so, or use different interfaces for each type by using either Perl modules, or command-line tools on your system.

This module Compress::Raw::Bzip2 provides a Perl interface to the bzip2 compression library.

The Archive::Zip module allows a Perl program to create, manipulate, read, and write Zip archive files.

Perl's IO::Compress module provides an interface for reading and writing compressed data created with the zlib and bzip2 libraries.

The IO::Zlib module is a Perl IO style interface to Compress:Zlib that simplifies reading and writing compressed data.

The Compress::Raw::Zlib module provides a Perl interface to the zlib compression library.

This package provides the Math::MatrixReal module. It implements the data type "matrix of real numbers" (and consequently also "vector of real numbers").

This package provides PGPLOT bindings for Perl. It uses giza instead of PGPLOT for the implementation, though.

This package provides a library and simple REPL for the Perl Data Language.

This package provides a library and simple REPL for the Perl Data Language.

This package provides modules to do 3D graphics in PDL.

This packages allows you to interpolate the value Y from X using a list of (X, Y) pairs.