Spread your tests over multiple machines to test your code faster.
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.
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
$ 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.
Running Remote Tasks
You can run tasks across all of your remote workers easily with Hydra. In your rake file, add:
Then you can run:
Running Global Tasks
A Global task is a task run locally and remotely. It's used in the same way as RemoteTask:
But it is invoked in a higher namespace:
Place the config file in the main project directory as 'hydra.yml' or 'config/hydra.yml'.
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: firstname.lastname@example.org 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@example.com directory: /path/to/project/on/alpha/ runners: 4 - type: ssh connect: firstname.lastname@example.org directory: /path/to/project/on/beta/ runners: 4 sync: directory: /my/local/project/directory exclude: - tmp - log - doc
Either “local” or “ssh”.
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).
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.
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.
The directory option is the path for the project directory where the tests should be run.
For more information on Hydra, check out the rdocs:
Copyright © 2010 Nick Gauthier. See LICENSE for details.