Hydra
Spread your tests over multiple machines to test your code faster.
Description
Hydra is a distributed testing framework. It allows you to distribute your tests locally across multiple cores and processors, as well as run your tests remotely over SSH.
Hydra’s goals are to make distributed testing easy. So as long as you can ssh into a computer and run the tests, you can automate the distribution with Hydra.
Usage
In your rakefile:
require 'hydra'
require 'hydra/tasks'
Hydra::TestTask.new('hydra') do |t|
t.add_files 'test/unit/**/*_test.rb'
t.add_files 'test/functional/**/*_test.rb'
t.add_files 'test/integration/**/*_test.rb'
end
Run:
$ rake hydra
Hydra defaults to Single Core mode, so you may want to configure it to use two (or more) of your cores if you have a multi-processing machine.
Configuration
Place the config file in the main project directory as ‘hydra.yml’ or ‘config/hydra.yml’.
Examples
Dual Core
workers:
- type: local
runners: 2
Dual Core, with a remote Quad Core server
The -p3022 tells it to connect on a different port
workers:
- type: local
runners: 2
- type: ssh
connect: [email protected]
ssh_opts: -p3022
directory: /absolute/path/to/project
runners: 4
Two Remote Quad Cores with Synchronization
You can use the ‘sync’ configuration to allow rsync to synchronize the local and remote directories every time you run hydra.
workers:
- type: ssh
connect: [email protected]
directory: /path/to/project/on/alpha/
runners: 4
- type: ssh
connect: [email protected]
directory: /path/to/project/on/beta/
runners: 4
sync:
directory: /my/local/project/directory
exclude:
- tmp
- log
- doc
Workers Options
type
Either “local” or “ssh”.
runners
The runners option is how many processes will be running on the machine. It’s best to pick the same number as the number of cores on that machine (as well as your own).
SSH Options
connect
The connect option is passed to SSH. So if you’ve setup an ssh config alias to a server, you can use that. It is also used in rsync, so you cannot use options.
ssh_opts
The ssh_opts option is passed to SSH and to Rsync’s RSH so that you can use the same ssh options for connecting and rsync. Use ssh_opts to set the port or compression options.
directory
The directory option is the path for the project directory where the tests should be run.
Copyright
Copyright © 2010 Nick Gauthier. See LICENSE for details.