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#!/usr/bin/env ruby
require File.expand_path(File.dirname(__FILE__) + '/../../spec_helper')
require 'puppet/util/file_locking'
describe Puppet::Util::FileLocking do
before :each do
@file = Tempfile.new("puppetspec")
filepath = @file.path
@file.close!()
@file = filepath
@data = {:a => :b, :c => "A string", :d => "another string", :e => %w{an array of strings}}
File.open(@file, "w") { |f| f.puts YAML.dump(@data) }
end
it "should be able to keep file corruption from happening when there are multiple writers threads" do
threads = []
sync = Sync.new
9.times { |a|
threads << Thread.new {
9.times { |b|
sync.synchronize(Sync::SH) {
Puppet::Util::FileLocking.readlock(@file) { |f|
YAML.load(f.read).should == @data
}
}
sleep 0.01
sync.synchronize(Sync::EX) {
Puppet::Util::FileLocking.writelock(@file) { |f|
f.puts YAML.dump(@data)
}
}
}
}
}
threads.each { |th| th.join }
end
it "should be able to keep file corruption from happening when there are multiple writers processes" do
unless Process.fork
50.times { |b|
Puppet::Util::FileLocking.writelock(@file) { |f|
f.puts YAML.dump(@data)
}
sleep 0.01
}
Kernel.exit!
end
50.times { |c|
Puppet::Util::FileLocking.readlock(@file) { |f|
YAML.load(f.read).should == @data
}
}
end
end
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