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#!/usr/bin/env rspec
require 'spec_helper'
require 'puppet/util/autoload/file_cache'
class FileCacheTester
include Puppet::Util::Autoload::FileCache
end
describe Puppet::Util::Autoload::FileCache do
before do
@cacher = FileCacheTester.new
end
after do
Puppet::Util::Autoload::FileCache.clear
end
describe "when checking whether files exist" do
it "should have a method for testing whether a file exists" do
@cacher.should respond_to(:file_exist?)
end
it "should use lstat to determine whether a file exists" do
File.expects(:lstat).with("/my/file")
@cacher.file_exist?("/my/file")
end
it "should consider a file as absent if its lstat fails" do
File.expects(:lstat).with("/my/file").raises Errno::ENOENT
@cacher.should_not be_file_exist("/my/file")
end
it "should consider a file as absent if the directory is absent" do
File.expects(:lstat).with("/my/file").raises Errno::ENOTDIR
@cacher.should_not be_file_exist("/my/file")
end
it "should consider a file as absent permissions are missing" do
File.expects(:lstat).with("/my/file").raises Errno::EACCES
@cacher.should_not be_file_exist("/my/file")
end
it "should raise non-fs exceptions" do
File.expects(:lstat).with("/my/file").raises ArgumentError
lambda { @cacher.file_exist?("/my/file") }.should raise_error(ArgumentError)
end
it "should consider a file as present if its lstat succeeds" do
File.expects(:lstat).with("/my/file").returns mock("stat")
@cacher.should be_file_exist("/my/file")
end
it "should not stat a file twice in quick succession when the file is missing" do
File.expects(:lstat).with("/my/file").once.raises Errno::ENOENT
@cacher.should_not be_file_exist("/my/file")
@cacher.should_not be_file_exist("/my/file")
end
it "should not stat a file twice in quick succession when the file is present" do
File.expects(:lstat).with("/my/file").once.returns mock("stat")
@cacher.should be_file_exist("/my/file")
@cacher.should be_file_exist("/my/file")
end
it "should expire cached data after 15 seconds" do
now = Time.now
later = now + 16
Time.expects(:now).times(3).returns(now).then.returns(later).then.returns(later)
File.expects(:lstat).with("/my/file").times(2).returns(mock("stat")).then.raises Errno::ENOENT
@cacher.should be_file_exist("/my/file")
@cacher.should_not be_file_exist("/my/file")
end
it "should share cached data across autoload instances" do
File.expects(:lstat).with("/my/file").once.returns mock("stat")
other = Puppet::Util::Autoload.new("bar", "tmp")
@cacher.should be_file_exist("/my/file")
other.should be_file_exist("/my/file")
end
end
describe "when checking whether files exist" do
before do
@stat = stub 'stat', :directory? => true
end
it "should have a method for determining whether a directory exists" do
@cacher.should respond_to(:directory_exist?)
end
it "should use lstat to determine whether a directory exists" do
File.expects(:lstat).with("/my/file").returns @stat
@cacher.directory_exist?("/my/file")
end
it "should consider a directory as absent if its lstat fails" do
File.expects(:lstat).with("/my/file").raises Errno::ENOENT
@cacher.should_not be_directory_exist("/my/file")
end
it "should consider a file as absent if the directory is absent" do
File.expects(:lstat).with("/my/file").raises Errno::ENOTDIR
@cacher.should_not be_directory_exist("/my/file")
end
it "should consider a file as absent permissions are missing" do
File.expects(:lstat).with("/my/file").raises Errno::EACCES
@cacher.should_not be_directory_exist("/my/file")
end
it "should raise non-fs exceptions" do
File.expects(:lstat).with("/my/file").raises ArgumentError
lambda { @cacher.directory_exist?("/my/file") }.should raise_error(ArgumentError)
end
it "should consider a directory as present if its lstat succeeds and the stat is of a directory" do
@stat.expects(:directory?).returns true
File.expects(:lstat).with("/my/file").returns @stat
@cacher.should be_directory_exist("/my/file")
end
it "should consider a directory as absent if its lstat succeeds and the stat is not of a directory" do
@stat.expects(:directory?).returns false
File.expects(:lstat).with("/my/file").returns @stat
@cacher.should_not be_directory_exist("/my/file")
end
it "should not stat a directory twice in quick succession when the file is missing" do
File.expects(:lstat).with("/my/file").once.raises Errno::ENOENT
@cacher.should_not be_directory_exist("/my/file")
@cacher.should_not be_directory_exist("/my/file")
end
it "should not stat a directory twice in quick succession when the file is present" do
File.expects(:lstat).with("/my/file").once.returns @stat
@cacher.should be_directory_exist("/my/file")
@cacher.should be_directory_exist("/my/file")
end
it "should not consider a file to be a directory based on cached data" do
@stat.stubs(:directory?).returns false
File.stubs(:lstat).with("/my/file").returns @stat
@cacher.file_exist?("/my/file")
@cacher.should_not be_directory_exist("/my/file")
end
it "should share cached data across autoload instances" do
File.expects(:lstat).with("/my/file").once.returns @stat
other = Puppet::Util::Autoload.new("bar", "tmp")
@cacher.should be_directory_exist("/my/file")
other.should be_directory_exist("/my/file")
end
end
end
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