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#!/usr/bin/env ruby
require File.dirname(__FILE__) + '/../lib/puppettest'
require 'puppettest'
require 'puppet/util/subclass_loader'
class TestPuppetUtilSubclassLoader < Test::Unit::TestCase
include PuppetTest
class LoadTest
extend Puppet::Util::SubclassLoader
handle_subclasses :faker, "puppet/fakeloaders"
end
def mk_subclass(name, path, parent)
# Make a fake client
unless defined?(@basedir)
@basedir ||= tempfile()
$: << @basedir
cleanup { $:.delete(@basedir) if $:.include?(@basedir) }
end
libdir = File.join([@basedir, path.split(File::SEPARATOR)].flatten)
FileUtils.mkdir_p(libdir)
file = File.join(libdir, "#{name}.rb")
File.open(file, "w") do |f|
f.puts %{class #{parent}::#{name.to_s.capitalize} < #{parent}; end}
end
end
def test_subclass_loading
# Make a fake client
mk_subclass("fake", "puppet/fakeloaders", "TestPuppetUtilSubclassLoader::LoadTest")
fake = nil
assert_nothing_raised do
fake = LoadTest.faker(:fake)
end
assert_nothing_raised do
assert_equal(fake, LoadTest.fake, "Did not get subclass back from main method")
end
assert(fake, "did not load subclass")
# Now make sure the subclass behaves correctly
assert_equal(:Fake, fake.name, "name was not calculated correctly")
end
def test_multiple_subclasses
sub1 = Class.new(LoadTest)
Object.const_set("Sub1", sub1)
sub2 = Class.new(sub1)
Object.const_set("Sub2", sub2)
assert_equal(sub2, LoadTest.sub2, "did not get subclass of subclass")
end
# I started out using a class variable to mark the loader,
# but it's shared among all classes that include this module,
# so it didn't work. This is testing whether I get the behaviour
# that I want.
def test_multiple_classes_using_module
other = Class.new do
extend Puppet::Util::SubclassLoader
handle_subclasses :other, "puppet/other"
end
Object.const_set("OtherLoader", other)
mk_subclass("multipletest", "puppet/other", "OtherLoader")
mk_subclass("multipletest", "puppet/fakeloaders", "TestPuppetUtilSubclassLoader::LoadTest")
#system("find %s" % @basedir)
#puts File.read(File.join(@basedir, "puppet/fakeloaders/multipletest.rb"))
#puts File.read(File.join(@basedir, "puppet/other/multipletest.rb"))
othersub = mainsub = nil
assert_nothing_raised("Could not look up other sub") do
othersub = OtherLoader.other(:multipletest)
end
assert_nothing_raised("Could not look up main sub") do
mainsub = LoadTest.faker(:multipletest)
end
assert(othersub, "did not get other sub")
assert(mainsub, "did not get main sub")
assert(othersub.ancestors.include?(OtherLoader), "othersub is not a subclass of otherloader")
assert(mainsub.ancestors.include?(LoadTest), "mainsub is not a subclass of loadtest")
end
end
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