Tests for Sidekiq handler

This covers the core functionality of the handler.

Here are ways the tests could be further improved, which I deemed not worth the effort:

1. Testing if the handler is attached properly for Rails < 3 vs. >=3. I have tested it manually for the >=3 case and it works.

2. higher level functional test in the style of how DelayedJob is tested, where actual failing jobs are queued up:
  https://github.com/rollbar/rollbar-gem/blob/master/spec/rollbar/delayed_job_spec.rb

I didn't do this because it's more difficult to do with Sidekiq, for reasons explored here:
  sidekiq/sidekiq#2128

spec/rollbar/sidekiq_spec.rb

@@ -0,0 +1,54 @@
+require 'spec_helper'
+
+unless RUBY_VERSION == '1.8.7'
+ require 'sidekiq'
+ require 'rollbar/sidekiq'
+end
+
+describe Rollbar::Sidekiq, :reconfigure_notifier => false do
+ before{ skip if RUBY_VERSION == '1.8.7' }
+
+ describe "Rollbar::Sidekiq.handle_exception" do
+ let(:msg_or_context){["hello", "error_backtrace", "backtrace", "goodbye"]}
+ let(:exception){StandardError.new("oh noes")}
+ let(:rollbar){double}
+ subject do
+ Rollbar::Sidekiq.handle_exception(msg_or_context, exception)
+ end
+
+ it "constructs scope from filtered params" do
+ rollbar.stub(:error)
+ Rollbar.should_receive(:scope).with(
+ { :request => { :params => ["hello", "goodbye"] } }
+ ){rollbar}
+ subject
+ end
+ it "sends the passed-in error to rollbar" do
+ Rollbar.stub(:scope){rollbar}
+ rollbar.should_receive(:error).with(exception, :use_exception_level_filters => true)
+ subject
+ end
+ end
+
+ describe "middleware" do
+ let(:middleware){Rollbar::Sidekiq.new}
+ let(:msg){["hello"]}
+ let(:exception){StandardError.new("oh noes")}
+ subject do
+ middleware.call(nil, msg, nil) do
+ raise exception
+ end
+ end
+
+ it "sends the error to Rollbar::Sidekiq.handle_exception" do
+ Rollbar::Sidekiq.should_receive(:handle_exception).with(msg, exception)
+ subject rescue nil
+ end
+
+ it "re-raises the exception" do
+ assert_raises StandardError do
+ subject
+ end
+ end
+ end
+end