Plugins and the test environment

rubyonrails-talk
1

Hi guys. I'm writing a plugin for use in the test environment. However, when I run ``rake test'' or ``rake spec'', RAILS_ENV is set to "development" when my plugin's init.rb is run.

How do you configure a plugin to load require a file in the test environment?

Thanks, Nick

2

Are you getting hoodwinked by the fact that the development environment is loaded once in order to dump its database (and then the test environment loads) ?

Fred

3

I think something strange was going on, as the test environment wasn't running at all. I've sorted it out now though. Thanks, mate!

4

Hi Fred. I seem to have run into this problem again. I'll outline my exact steps for you:

1) Create a new Rails app. $ rails test_plugin_env $ cd test_plugin_env

2) Create a new plugin. $ script/generate plugin Foobar

3) Add the following to vendor/plugins/foobar/init.rb if defined? RAILS_ENV   puts "foobar > init.rb > RAILS_ENV = [#{RAILS_ENV}]"   puts "foobar > init.rb > test environment!" if RAILS_ENV == 'test' end

If you then run whatever tests exists in an empty Rails app, you'll see that RAILS_ENV is never set to "test". For example:

$ rake test (in /Users/nick/src/test_plugin_env) foobar > init.rb > RAILS_ENV = [development] /opt/local/bin/ruby -Ilib:test "/opt/local/lib/ruby/gems/1.8/gems/ rake-0.8.1/lib/rake/rake_test_loader.rb" /opt/local/bin/ruby -Ilib:test "/opt/local/lib/ruby/gems/1.8/gems/ rake-0.8.1/lib/rake/rake_test_loader.rb" /opt/local/bin/ruby -Ilib:test "/opt/local/lib/ruby/gems/1.8/gems/ rake-0.8.1/lib/rake/rake_test_loader.rb" $

Why is RAILS_ENV never set to "test"?

Thanks again, Fred! -Nick

5

Are you getting hoodwinked by the fact that the development
environmentis loaded once in order to dump its database (and then
the testenvironmentloads) ?

Fred

Hi Fred. I seem to have run into this problem again. I'll outline my exact steps for you:

Create at least one test in that app and it should be fine.

Fred

6

I created a basic unit test:

$ cat test/unit/foobar_test.rb require File.dirname(__FILE__) + '/../test_helper'

class FoobarTest < Test::Unit::TestCase   def test_true     assert true, true   end end

But when I ran the test, the development environment was loaded before the test environment:

---START OUTPUT--- $ rake test:units (in /Users/nick/src/test_plugin_env) foobar > init.rb > RAILS_ENV = [development] /opt/local/bin/ruby -Ilib:test "/opt/local/lib/ruby/gems/1.8/gems/ rake-0.8.1/lib/rake/rake_test_loader.rb" "test/unit/foobar_test.rb" foobar > init.rb > RAILS_ENV = [test] foobar > init.rb > test environment! Loaded suite /opt/local/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake/ rake_test_loader Started . Finished in 0.216451 seconds.

1 tests, 1 assertions, 0 failures, 0 errors ---END OUTPUT---

Why is the development environment loaded before the test environment?

Thanks, Nick

7

Why is the development environment loaded before the test environment?

Because the first thing that rake test does is clone the development database. Were you to run just one test (ie ruby test/unit/ foo_test.rb) you wouldn't see the dev environment loaded.

Fred

8

I see. That explains things a bit now.

With that in mind, how would you configure a plugin to be loaded only in the development environment, and not in the test environment? Since running a suite of tests first jumps into the development environment, I'm not sure how to go about this.

Cheers, Nick

9

> On Oct 14, 7:22 pm, Nick <n...@deadorange.com> wrote:> On Oct 14, 2:14 pm, Frederick Cheung <frederick.che...@gmail.com> > > wrote:

> > Why is the development environment loaded before the test environment?

> Because the first thing that rake test does is clone the development > database. Were you to run just one test (ie ruby test/unit/ > foo_test.rb) you wouldn't see the dev environment loaded.

> Fred

I see. That explains things a bit now.

With that in mind, how would you configure a plugin to be loaded only in the development environment, and not in the test environment? Since running a suite of tests first jumps into the development environment, I'm not sure how to go about this.

you could certainly bracket the body of your init.rb with "if RAILS_ENV ==" and do nothing if not (except perhaps remove your plugin's lib directory from the load path)

Fred

10

Hi Fred. I'm afraid I don't follow. If I put this in a plugin's init.rb :     require 'foobar' if RAILS_ENV == 'development' Then 'foobar' will be loaded whenever any test suite, such as ``rake test'' or ``rake spec'', is run, because rake initially loads the development environment. -Nick