fix(channel): fix channel consistency

- Fix the problem that chanclose() does not work for channel created by
  nvim_open_term().
- Fix the problem that the loopback channel is not released.
- Fix the error message when sending raw data to the loopback channel.

1 files changed, 10 insertions, 0 deletions

diff --git a/test/functional/terminal/channel_spec.lua b/test/functional/terminal/channel_spec.lua
index 7223f5ba61..a0aa8c0708 100644
--- a/test/functional/terminal/channel_spec.lua
+++ b/test/functional/terminal/channel_spec.lua
@@ -43,3 +43,13 @@ describe('associated channel is closed and later freed for terminal', function()
     eq("Vim(call):E900: Invalid channel id", pcall_err(command, [[call chansend(id, 'test')]]))
   end)
 end)
+
+describe('channel created by nvim_open_term', function()
+  before_each(clear)
+
+  it('can close', function()
+    command('let id = nvim_open_term(0, {})')
+    eq("Vim(call):Can't send data to closed stream",
+       pcall_err(command, [[call chanclose(id) | call chansend(id, 'test')]]))
+  end)
+end)