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#! /usr/bin/env ruby
require 'spec_helper'
require 'yaml'
require 'fileutils'
require 'puppet/util/storage'
describe Puppet::Util::Storage do
include PuppetSpec::Files
before(:each) do
@basepath = File.expand_path("/somepath")
end
describe "when caching a symbol" do
it "should return an empty hash" do
Puppet::Util::Storage.cache(:yayness).should == {}
Puppet::Util::Storage.cache(:more_yayness).should == {}
end
it "should add the symbol to its internal state" do
Puppet::Util::Storage.cache(:yayness)
Puppet::Util::Storage.state.should == {:yayness=>{}}
end
it "should not clobber existing state when caching additional objects" do
Puppet::Util::Storage.cache(:yayness)
Puppet::Util::Storage.state.should == {:yayness=>{}}
Puppet::Util::Storage.cache(:bubblyness)
Puppet::Util::Storage.state.should == {:yayness=>{},:bubblyness=>{}}
end
end
describe "when caching a Puppet::Type" do
before(:each) do
@file_test = Puppet::Type.type(:file).new(:name => @basepath+"/yayness", :audit => %w{checksum type})
@exec_test = Puppet::Type.type(:exec).new(:name => @basepath+"/bin/ls /yayness")
end
it "should return an empty hash" do
Puppet::Util::Storage.cache(@file_test).should == {}
Puppet::Util::Storage.cache(@exec_test).should == {}
end
it "should add the resource ref to its internal state" do
Puppet::Util::Storage.state.should == {}
Puppet::Util::Storage.cache(@file_test)
Puppet::Util::Storage.state.should == {"File[#{@basepath}/yayness]"=>{}}
Puppet::Util::Storage.cache(@exec_test)
Puppet::Util::Storage.state.should == {"File[#{@basepath}/yayness]"=>{}, "Exec[#{@basepath}/bin/ls /yayness]"=>{}}
end
end
describe "when caching something other than a resource or symbol" do
it "should cache by converting to a string" do
data = Puppet::Util::Storage.cache(42)
data[:yay] = true
Puppet::Util::Storage.cache("42")[:yay].should be_true
end
end
it "should clear its internal state when clear() is called" do
Puppet::Util::Storage.cache(:yayness)
Puppet::Util::Storage.state.should == {:yayness=>{}}
Puppet::Util::Storage.clear
Puppet::Util::Storage.state.should == {}
end
describe "when loading from the state file" do
before do
Puppet.settings.stubs(:use).returns(true)
end
describe "when the state file/directory does not exist" do
before(:each) do
@path = tmpfile('storage_test')
end
it "should not fail to load" do
Puppet::FileSystem.exist?(@path).should be_false
Puppet[:statedir] = @path
Puppet::Util::Storage.load
Puppet[:statefile] = @path
Puppet::Util::Storage.load
end
it "should not lose its internal state when load() is called" do
Puppet::FileSystem.exist?(@path).should be_false
Puppet::Util::Storage.cache(:yayness)
Puppet::Util::Storage.state.should == {:yayness=>{}}
Puppet[:statefile] = @path
Puppet::Util::Storage.load
Puppet::Util::Storage.state.should == {:yayness=>{}}
end
end
describe "when the state file/directory exists" do
before(:each) do
@state_file = tmpfile('storage_test')
FileUtils.touch(@state_file)
Puppet[:statefile] = @state_file
end
def write_state_file(contents)
File.open(@state_file, 'w') { |f| f.write(contents) }
end
it "should overwrite its internal state if load() is called" do
# Should the state be overwritten even if Puppet[:statefile] is not valid YAML?
Puppet::Util::Storage.cache(:yayness)
Puppet::Util::Storage.state.should == {:yayness=>{}}
Puppet::Util::Storage.load
Puppet::Util::Storage.state.should == {}
end
it "should restore its internal state if the state file contains valid YAML" do
test_yaml = {'File["/yayness"]'=>{"name"=>{:a=>:b,:c=>:d}}}
write_state_file(test_yaml.to_yaml)
Puppet::Util::Storage.load
Puppet::Util::Storage.state.should == test_yaml
end
it "should initialize with a clear internal state if the state file does not contain valid YAML" do
write_state_file('{ invalid')
Puppet::Util::Storage.load
Puppet::Util::Storage.state.should == {}
end
it "should initialize with a clear internal state if the state file does not contain a hash of data" do
write_state_file("not_a_hash")
Puppet::Util::Storage.load
Puppet::Util::Storage.state.should == {}
end
it "should raise an error if the state file does not contain valid YAML and cannot be renamed" do
write_state_file('{ invalid')
File.expects(:rename).raises(SystemCallError)
expect { Puppet::Util::Storage.load }.to raise_error(Puppet::Error, /Could not rename/)
end
it "should attempt to rename the state file if the file is corrupted" do
write_state_file('{ invalid')
File.expects(:rename).at_least_once
Puppet::Util::Storage.load
end
it "should fail gracefully on load() if the state file is not a regular file" do
FileUtils.rm_f(@state_file)
Dir.mkdir(@state_file)
Puppet::Util::Storage.load
end
end
end
describe "when storing to the state file" do
before(:each) do
@state_file = tmpfile('storage_test')
@saved_statefile = Puppet[:statefile]
Puppet[:statefile] = @state_file
end
it "should create the state file if it does not exist" do
Puppet::FileSystem.exist?(Puppet[:statefile]).should be_false
Puppet::Util::Storage.cache(:yayness)
Puppet::Util::Storage.store
Puppet::FileSystem.exist?(Puppet[:statefile]).should be_true
end
it "should raise an exception if the state file is not a regular file" do
Dir.mkdir(Puppet[:statefile])
Puppet::Util::Storage.cache(:yayness)
expect { Puppet::Util::Storage.store }.to raise_error
Dir.rmdir(Puppet[:statefile])
end
it "should load() the same information that it store()s" do
Puppet::Util::Storage.cache(:yayness)
Puppet::Util::Storage.state.should == {:yayness=>{}}
Puppet::Util::Storage.store
Puppet::Util::Storage.clear
Puppet::Util::Storage.state.should == {}
Puppet::Util::Storage.load
Puppet::Util::Storage.state.should == {:yayness=>{}}
end
end
end
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