TAP::Harness::Remote - Run tests on a remote server
prove -l --state=save,slow --harness TAP::Harness::Remote t/*.t
Sometimes you want to run tests on a remote testing machine, rather than your local development box. TAP::Harness::Remote allows you so reproduce entire directory trees on a remote server via rsync, and spawn the tests remotely. It also supports round-robin distribution of tests across multiple remote testing machines.
TAP::Harness::Remote synchronizes a local directory to the remote testing server. All tests that you wish to run remotely must be somewhere within this "local testing root" directory. You should configure where this directory is by creating or editing your ~/.remote_test file:
---
ssh: /usr/bin/ssh
local: /path/to/local/testing/root/
user: username
host: remote.testing.host.example.com
root: /where/to/place/local/root/on/remote/
perl: /usr/bin/perl
master: 1
ssh_args:
- -x
- -S
- '~/.ssh/master-%r@%h:%p'
See "CONFIGURATION AND ENVIRONMENT" for more details on the individual configuration options.
Once your ~/.remote_test is configured, you can run your tests remotely, using:
prove -l --harness TAP::Harness::Remote t/*.t
Any paths in @INC which point inside your local testing root are rewritten to point to the equivilent path on the remote host. This is especially useful if you are testing a number of inter-related modules; by placing all of them all under the local testing root, and adding all of their lib/ paths to your PERL5LIB, you can ensure that the remote machine always tests your combination of the modules, not whichever versions are installed on the remote host.
Note that for irritating technical reasons (your CWD has already been resolved), your local root cannot contain symlinks to directories. This means you may need to rearrange your directory structure slightly to set up the appropriate local testing root.
If you farm of remote hosts, you may change the host configuration variable to be an array reference of hostnames. Tests will be distributed in a round-robin manner across the hosts. Each host will run as many tests in parallel as you specified with -j.
Especially when running tests in parallel, it is highly suggested that you use the standard TAP::Harness --state=save,slow option, as this ensures that the slowest tests will run first, reducing your overall test run time.
Overrides "new" in TAP::Harness to load the local configuration, and add the necessary hooks for when tests are actually run.
Returns the path to the configuration file; this is usually $ENV{HOME}/.remote_test.
Returns, as a hashref, the default configuration. See "CONFIGURATION".
Loads and canonicalizes the configuration. Writes and uses the default configuration ("default_config") if the file does not exist.
Returns the configuration value set fo the given KEY.
Returns a valid user@host string; host is taken to be the first known host, unless provided.
Starts the ssh master connections, if support for them is enabled. Otherwise, does nothing. See the man page for ssh -M for more information about master connections.
Starts the openssh master connections if need be (see "start_masters"), then rsync's over the entire local root. Additionally, rewrites the local PERL5LIB path such that any directories which point into the local root are included in the remote PERL5LIB as well.
Tears down the ssh master connections, if they were started.
Changes the switches around, such that the remote perl is called, via ssh.
Configuration is done via the file ~/.remote_test, which is a YAML file. Valid keys are:
The username to use on the remote connection.
The host to connect to. If this is an array reference, tests will be distributed, round-robin fashion, across all of the hosts. This does also incur the overhead of rsync'ing to each host.
The remote testing root. This is the place where the local root will be rsync'd to.
The local testing root. All files under this will be rsync'd to the remote server. All tests to be run remotely must be within this root.
The path to the perl binary on the remote host.
The path to the local ssh binary.
Either a string or an array reference of arguments to pass to ssh. Suggested defaults include -x and -S ~/.ssh/master-%r@%h:%p
If a true value is given for this, will attempt to use OpenSSH master connections to reduce the overhead of making repeated connections to the remote host.
A recent enough TAP::Harness build; 3.03 or later should suffice. Working copies of OpenSSH and rsync.
Aborting tests using ^C may leave dangling processes on the remote host.
Please report any bugs or feature requests to bug-tap-harness-remote@rt.cpan.org, or through the web interface at http://rt.cpan.org.
Alex Vandiver <alexmv@bestpractical.com>
Copyright (c) 2007-2008, Best Practical Solutions, LLC. All rights reserved.
This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See perlartistic.
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