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# frozen_string_literal: true
require "abstract_unit"
require "pathname"
require "file_update_checker_shared_tests"
class EventedFileUpdateCheckerTest < ActiveSupport::TestCase
include FileUpdateCheckerSharedTests
def setup
skip if ENV["LISTEN"] == "0"
require "listen"
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
test "notifies forked processes" do
jruby_skip "Forking not available on JRuby"
FileUtils.touch(tmpfiles)
checker = new_checker(tmpfiles) { }
assert_not_predicate checker, :updated?
# Pipes used for flow control across fork.
boot_reader, boot_writer = IO.pipe
touch_reader, touch_writer = IO.pipe
pid = fork do
assert_predicate checker, :updated?
# Clear previous check value.
checker.execute
assert_not_predicate 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_predicate 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_predicate checker, :updated?
Process.wait(pid)
end
test "should detect changes through symlink" do
actual_dir = File.join(tmpdir, "actual")
linked_dir = File.join(tmpdir, "linked")
Dir.mkdir(actual_dir)
FileUtils.ln_s(actual_dir, linked_dir)
checker = new_checker([], linked_dir => ".rb") { }
assert_not_predicate checker, :updated?
FileUtils.touch(File.join(actual_dir, "a.rb"))
wait
assert_predicate checker, :updated?
assert checker.execute_if_updated
end
test "updated should become true when nonexistent directory is added later" do
watched_dir = File.join(tmpdir, "app")
unwatched_dir = File.join(tmpdir, "node_modules")
not_exist_watched_dir = File.join(tmpdir, "test")
Dir.mkdir(watched_dir)
Dir.mkdir(unwatched_dir)
checker = new_checker([], watched_dir => ".rb", not_exist_watched_dir => ".rb") { }
FileUtils.touch(File.join(watched_dir, "a.rb"))
wait
assert_predicate checker, :updated?
assert checker.execute_if_updated
Dir.mkdir(not_exist_watched_dir)
wait
assert_predicate checker, :updated?
assert checker.execute_if_updated
FileUtils.touch(File.join(unwatched_dir, "a.rb"))
wait
assert_not_predicate checker, :updated?
assert_not checker.execute_if_updated
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 "#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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