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#! /usr/bin/env ruby
require 'spec_helper'
require 'puppet/agent'
require 'puppet/agent/locker'
class LockerTester
include Puppet::Agent::Locker
end
describe Puppet::Agent::Locker do
before do
@locker = LockerTester.new
end
## These tests are currently very implementation-specific, and they rely heavily on
## having access to the lockfile object. However, I've made this method private
## because it really shouldn't be exposed outside of our implementation... therefore
## these tests have to use a lot of ".send" calls. They should probably be cleaned up
## but for the moment I wanted to make sure not to lose any of the functionality of
## the tests. --cprice 2012-04-16
it "should use a Pidlock instance as its lockfile" do
@locker.send(:lockfile).should be_instance_of(Puppet::Util::Pidlock)
end
it "should use puppet's agent_catalog_run_lockfile' setting to determine its lockfile path" do
lockfile = File.expand_path("/my/lock")
Puppet[:agent_catalog_run_lockfile] = lockfile
lock = Puppet::Util::Pidlock.new(lockfile)
Puppet::Util::Pidlock.expects(:new).with(lockfile).returns lock
@locker.send(:lockfile)
end
it "#lockfile_path provides the path to the lockfile" do
lockfile = File.expand_path("/my/lock")
Puppet[:agent_catalog_run_lockfile] = lockfile
@locker.lockfile_path.should == File.expand_path("/my/lock")
end
it "should reuse the same lock file each time" do
@locker.send(:lockfile).should equal(@locker.send(:lockfile))
end
it "should have a method that yields when a lock is attained" do
@locker.send(:lockfile).expects(:lock).returns true
yielded = false
@locker.lock do
yielded = true
end
yielded.should be_true
end
it "should return the block result when the lock method successfully locked" do
@locker.send(:lockfile).expects(:lock).returns true
@locker.lock { :result }.should == :result
end
it "should return nil when the lock method does not receive the lock" do
@locker.send(:lockfile).expects(:lock).returns false
@locker.lock {}.should be_nil
end
it "should not yield when the lock method does not receive the lock" do
@locker.send(:lockfile).expects(:lock).returns false
yielded = false
@locker.lock { yielded = true }
yielded.should be_false
end
it "should not unlock when a lock was not received" do
@locker.send(:lockfile).expects(:lock).returns false
@locker.send(:lockfile).expects(:unlock).never
@locker.lock {}
end
it "should unlock after yielding upon obtaining a lock" do
@locker.send(:lockfile).stubs(:lock).returns true
@locker.send(:lockfile).expects(:unlock)
@locker.lock {}
end
it "should unlock after yielding upon obtaining a lock, even if the block throws an exception" do
@locker.send(:lockfile).stubs(:lock).returns true
@locker.send(:lockfile).expects(:unlock)
lambda { @locker.lock { raise "foo" } }.should raise_error(RuntimeError)
end
it "should be considered running if the lockfile is locked" do
@locker.send(:lockfile).expects(:locked?).returns true
@locker.should be_running
end
end
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