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-rw-r--r--activesupport/test/evented_file_update_checker_test.rb44
1 files changed, 43 insertions, 1 deletions
diff --git a/activesupport/test/evented_file_update_checker_test.rb b/activesupport/test/evented_file_update_checker_test.rb
index bc3f77bd54..2cb2d8167f 100644
--- a/activesupport/test/evented_file_update_checker_test.rb
+++ b/activesupport/test/evented_file_update_checker_test.rb
@@ -11,7 +11,7 @@ class EventedFileUpdateCheckerTest < ActiveSupport::TestCase
end
def new_checker(files = [], dirs = {}, &block)
- ActiveSupport::EventedFileUpdateChecker.new(files, dirs, &block).tap do
+ ActiveSupport::EventedFileUpdateChecker.new(files, dirs, &block).tap do |c|
wait
end
end
@@ -34,6 +34,48 @@ class EventedFileUpdateCheckerTest < ActiveSupport::TestCase
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