events: add "Signal" event #9564

..which gets triggered when SIGUSR1 is sent to the nvim process.

Closes #9562

1 files changed, 38 insertions, 0 deletions

diff --git a/test/functional/autocmd/signal_spec.lua b/test/functional/autocmd/signal_spec.lua
new file mode 100644
index 0000000000..719adeaf1b
--- /dev/null
+++ b/test/functional/autocmd/signal_spec.lua
@@ -0,0 +1,38 @@
+local helpers = require('test.functional.helpers')(after_each)
+
+local clear = helpers.clear
+local command = helpers.command
+local eq = helpers.eq
+local funcs = helpers.funcs
+local next_msg = helpers.next_msg
+
+if helpers.pending_win32(pending) then
+  -- Only applies to POSIX systems.
+  return
+end
+
+local function posix_kill(signame, pid)
+  os.execute('kill -s '..signame..' -- '..pid..' >/dev/null')
+end
+
+describe('autocmd Signal', function()
+  before_each(clear)
+
+  it('matches *', function()
+    command('autocmd Signal * call rpcnotify(1, "foo")')
+    posix_kill('USR1', funcs.getpid())
+    eq({'notification', 'foo', {}}, next_msg())
+  end)
+
+  it('matches SIGUSR1', function()
+    command('autocmd Signal SIGUSR1 call rpcnotify(1, "foo")')
+    posix_kill('USR1', funcs.getpid())
+    eq({'notification', 'foo', {}}, next_msg())
+  end)
+
+  it('does not match unknown patterns', function()
+    command('autocmd Signal SIGUSR2 call rpcnotify(1, "foo")')
+    posix_kill('USR1', funcs.getpid())
+    eq(nil, next_msg(500))
+  end)
+end)