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#! /usr/bin/env ruby
require 'spec_helper'
require 'puppet/util/pidlock'
describe Puppet::Util::Pidlock do
require 'puppet_spec/files'
include PuppetSpec::Files
before(:each) do
@lockfile = tmpfile("lock")
@lock = Puppet::Util::Pidlock.new(@lockfile)
end
describe "#lock" do
it "should not be locked at start" do
expect(@lock).not_to be_locked
end
it "should not be mine at start" do
expect(@lock).not_to be_mine
end
it "should become locked" do
@lock.lock
expect(@lock).to be_locked
end
it "should become mine" do
@lock.lock
expect(@lock).to be_mine
end
it "should be possible to lock multiple times" do
@lock.lock
expect { @lock.lock }.not_to raise_error
end
it "should return true when locking" do
expect(@lock.lock).to be_truthy
end
it "should return true if locked by me" do
@lock.lock
expect(@lock.lock).to be_truthy
end
it "should create a lock file" do
@lock.lock
expect(Puppet::FileSystem.exist?(@lockfile)).to be_truthy
end
it 'should create an empty lock file even when pid is missing' do
Process.stubs(:pid).returns('')
@lock.lock
expect(Puppet::FileSystem.exist?(@lock.file_path)).to be_truthy
expect(Puppet::FileSystem.read(@lock.file_path)).to be_empty
end
it 'should replace an existing empty lockfile with a pid, given a subsequent lock call made against a valid pid' do
# empty pid results in empty lockfile
Process.stubs(:pid).returns('')
@lock.lock
expect(Puppet::FileSystem.exist?(@lock.file_path)).to be_truthy
# next lock call with valid pid kills existing empty lockfile
Process.stubs(:pid).returns(1234)
@lock.lock
expect(Puppet::FileSystem.exist?(@lock.file_path)).to be_truthy
expect(Puppet::FileSystem.read(@lock.file_path)).to eq('1234')
end
it "should expose the lock file_path" do
expect(@lock.file_path).to eq(@lockfile)
end
end
describe "#unlock" do
it "should not be locked anymore" do
@lock.lock
@lock.unlock
expect(@lock).not_to be_locked
end
it "should return false if not locked" do
expect(@lock.unlock).to be_falsey
end
it "should return true if properly unlocked" do
@lock.lock
expect(@lock.unlock).to be_truthy
end
it "should get rid of the lock file" do
@lock.lock
@lock.unlock
expect(Puppet::FileSystem.exist?(@lockfile)).to be_falsey
end
end
describe "#locked?" do
it "should return true if locked" do
@lock.lock
expect(@lock).to be_locked
end
it "should remove the lockfile when pid is missing" do
Process.stubs(:pid).returns('')
@lock.lock
expect(@lock.locked?).to be_falsey
expect(Puppet::FileSystem.exist?(@lock.file_path)).to be_falsey
end
end
describe '#lock_pid' do
it 'should return nil if the pid is empty' do
# fake pid to get empty lockfile
Process.stubs(:pid).returns('')
@lock.lock
expect(@lock.lock_pid).to eq(nil)
end
end
describe "with a stale lock" do
before(:each) do
# fake our pid to be 1234
Process.stubs(:pid).returns(1234)
# lock the file
@lock.lock
# fake our pid to be a different pid, to simulate someone else
# holding the lock
Process.stubs(:pid).returns(6789)
Process.stubs(:kill).with(0, 6789)
Process.stubs(:kill).with(0, 1234).raises(Errno::ESRCH)
end
it "should not be locked" do
expect(@lock).not_to be_locked
end
describe "#lock" do
it "should clear stale locks" do
expect(@lock.locked?).to be_falsey
expect(Puppet::FileSystem.exist?(@lockfile)).to be_falsey
end
it "should replace with new locks" do
@lock.lock
expect(Puppet::FileSystem.exist?(@lockfile)).to be_truthy
expect(@lock.lock_pid).to eq(6789)
expect(@lock).to be_mine
expect(@lock).to be_locked
end
end
describe "#unlock" do
it "should not be allowed" do
expect(@lock.unlock).to be_falsey
end
it "should not remove the lock file" do
@lock.unlock
expect(Puppet::FileSystem.exist?(@lockfile)).to be_truthy
end
end
end
describe "with another process lock" do
before(:each) do
# fake our pid to be 1234
Process.stubs(:pid).returns(1234)
# lock the file
@lock.lock
# fake our pid to be a different pid, to simulate someone else
# holding the lock
Process.stubs(:pid).returns(6789)
Process.stubs(:kill).with(0, 6789)
Process.stubs(:kill).with(0, 1234)
end
it "should be locked" do
expect(@lock).to be_locked
end
it "should not be mine" do
expect(@lock).not_to be_mine
end
describe "#lock" do
it "should not be possible" do
expect(@lock.lock).to be_falsey
end
it "should not overwrite the lock" do
@lock.lock
expect(@lock).not_to be_mine
end
end
describe "#unlock" do
it "should not be possible" do
expect(@lock.unlock).to be_falsey
end
it "should not remove the lock file" do
@lock.unlock
expect(Puppet::FileSystem.exist?(@lockfile)).to be_truthy
end
it "should still not be our lock" do
@lock.unlock
expect(@lock).not_to be_mine
end
end
end
end
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