test_inotify: add test for rm_watch

Ugh, unfortunately this seems buggy in some cases, but we
need to ensure the regular case works.

ref: https://lkml.org/lkml/2007/7/9/3
Subject: inotify_rm_watch() EINVAL race condition for deleted files

1 files changed, 13 insertions, 0 deletions

diff --git a/test/test_inotify.rb b/test/test_inotify.rb
index 5cf5839..895e13b 100644
--- a/test/test_inotify.rb
+++ b/test/test_inotify.rb
@@ -103,4 +103,17 @@ class TestInotify < Testcase
     end
     assert_equal 0, nr
   end
+
+  def test_rm_watch
+    ino = Inotify.new Inotify::CLOEXEC
+    tmp = Tempfile.new 'a'
+    wd = ino.add_watch tmp.path, Inotify::ALL_EVENTS
+    assert_kind_of Integer, wd
+    tmp.syswrite '.'
+    event = ino.take
+    assert_equal wd, event.wd
+    assert_kind_of Inotify::Event, event
+    assert_equal [:MODIFY], event.events
+    assert_equal 0, ino.rm_watch(wd)
+  end
 end if defined?(SleepyPenguin::Inotify)