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require 'abstract_unit'
require 'pathname'
require 'file_update_checker_shared_tests'
class EventedFileUpdateCheckerTest < ActiveSupport::TestCase
include FileUpdateCheckerSharedTests
def setup
skip if ENV['LISTEN'] == '0'
super
end
def new_checker(files = [], dirs = {}, &block)
ActiveSupport::EventedFileUpdateChecker.new(files, dirs, &block).tap do |c|
wait
end
end
def teardown
super
Listen.stop
end
def wait
sleep 1
end
def touch(files)
super
wait # wait for the events to fire
end
def rm_f(files)
super
wait
end
test 'notifies forked processes' do
FileUtils.touch(tmpfiles)
checker = new_checker(tmpfiles) { }
assert !checker.updated?
# Pipes used for flow controll across fork.
boot_reader, boot_writer = IO.pipe
touch_reader, touch_writer = IO.pipe
pid = fork do
assert checker.updated?
# Clear previous check value.
checker.execute
assert !checker.updated?
# Fork is booted, ready for file to be touched
# notify parent process.
boot_writer.write("booted")
# Wait for parent process to signal that file
# has been touched.
IO.select([touch_reader])
assert checker.updated?
end
assert pid
# Wait for fork to be booted before touching files.
IO.select([boot_reader])
touch(tmpfiles)
# Notify fork that files have been touched.
touch_writer.write("touched")
assert checker.updated?
Process.wait(pid)
end
end
class EventedFileUpdateCheckerPathHelperTest < ActiveSupport::TestCase
def pn(path)
Pathname.new(path)
end
setup do
@ph = ActiveSupport::EventedFileUpdateChecker::PathHelper.new
end
test '#xpath returns the expanded path as a Pathname object' do
assert_equal pn(__FILE__).expand_path, @ph.xpath(__FILE__)
end
test '#normalize_extension returns a bare extension as is' do
assert_equal 'rb', @ph.normalize_extension('rb')
end
test '#normalize_extension removes a leading dot' do
assert_equal 'rb', @ph.normalize_extension('.rb')
end
test '#normalize_extension supports symbols' do
assert_equal 'rb', @ph.normalize_extension(:rb)
end
test '#longest_common_subpath finds the longest common subpath, if there is one' do
paths = %w(
/foo/bar
/foo/baz
/foo/bar/baz/woo/zoo
).map { |path| pn(path) }
assert_equal pn('/foo'), @ph.longest_common_subpath(paths)
end
test '#longest_common_subpath returns the root directory as an edge case' do
paths = %w(
/foo/bar
/foo/baz
/foo/bar/baz/woo/zoo
/wadus
).map { |path| pn(path) }
assert_equal pn('/'), @ph.longest_common_subpath(paths)
end
test '#longest_common_subpath returns nil for an empty collection' do
assert_nil @ph.longest_common_subpath([])
end
test '#existing_parent returns the most specific existing ascendant' do
wd = Pathname.getwd
assert_equal wd, @ph.existing_parent(wd)
assert_equal wd, @ph.existing_parent(wd.join('non-existing/directory'))
assert_equal pn('/'), @ph.existing_parent(pn('/non-existing/directory'))
end
test '#filter_out_descendants returns the same collection if there are no descendants (empty)' do
assert_equal [], @ph.filter_out_descendants([])
end
test '#filter_out_descendants returns the same collection if there are no descendants (one)' do
assert_equal ['/foo'], @ph.filter_out_descendants(['/foo'])
end
test '#filter_out_descendants returns the same collection if there are no descendants (several)' do
paths = %w(
/Rails.root/app/controllers
/Rails.root/app/models
/Rails.root/app/helpers
).map { |path| pn(path) }
assert_equal paths, @ph.filter_out_descendants(paths)
end
test '#filter_out_descendants filters out descendants preserving order' do
paths = %w(
/Rails.root/app/controllers
/Rails.root/app/controllers/concerns
/Rails.root/app/models
/Rails.root/app/models/concerns
/Rails.root/app/helpers
).map { |path| pn(path) }
assert_equal paths.values_at(0, 2, 4), @ph.filter_out_descendants(paths)
end
test '#filter_out_descendants works on path units' do
paths = %w(
/foo/bar
/foo/barrrr
).map { |path| pn(path) }
assert_equal paths, @ph.filter_out_descendants(paths)
end
test '#filter_out_descendants deals correctly with the root directory' do
paths = %w(
/
/foo
/foo/bar
).map { |path| pn(path) }
assert_equal paths.values_at(0), @ph.filter_out_descendants(paths)
end
test '#filter_out_descendants preserves duplicates' do
paths = %w(
/foo
/foo/bar
/foo
).map { |path| pn(path) }
assert_equal paths.values_at(0, 2), @ph.filter_out_descendants(paths)
end
end
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