test/run.sh hangs on OS X system python about lldb.nvim

[critiqjo]

I'm not so sure what's going wrong... Try increasing the delay to 2 seconds here and rerun the tests.

If that doesn't work, add this line:

self.logger.info(method.__name__, args)

below this line, try reproducing this error, and give me the whole log as text.

[tsliwkan]

Added delay as 2 and added the logger method. I also modified my $PATH so python2 is will be run from the system directory.

From the terminal buffer

File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading
.py", line 810, in __bootstrap_inner
    self.run
  File "/Users/tsliwkan/config/nvim/plugged/lldb.nvim/rplugin/python/lldb_nvim/controlle
r.py", line 286, in run
    out += self._process.GetSTDERR(256)
TypeError: unsupported operand type(s) for +=: 'NoneType' and 'NoneType'

Traceback (most recent call last):
  File "test.py", line 40, in <module>
    iface._exec('continue')
  File "/Users/tsliwkan/config/nvim/plugged/lldb.nvim/rplugin/python/lldb_nvim/__init__.
py", line 41, in _exec
    self.ctrl.safe_execute(args)
  File "/Users/tsliwkan/config/nvim/plugged/lldb.nvim/rplugin/python/lldb_nvim/controlle
r.py", line 93, in safe_execute
    self.safe_call(self.exec_command, [cmd])
  File "/Users/tsliwkan/config/nvim/plugged/lldb.nvim/rplugin/python/lldb_nvim/controlle
r.py", line 86, in safe_call
    raise EventLoopError("Dead event loop!")
EventLoopError: Dead event loop!
Debugger terminated! If you see no errors, everything's cool!

and from test.log

2016-04-16 14:40:13,647 [INFO @ controller.py:safe_call:69] 3032 - handle
2016-04-16 14:40:13,647 [INFO @ controller.py:run:275] 3032 - Calling handle with ['load', 'lldb-nvim.json']
2016-04-16 14:40:13,649 [INFO @ vim_x.py:call:19] 3032 - ('lldb#layout#init_buffers',)
2016-04-16 14:40:15,648 [INFO @ controller.py:safe_call:69] 3032 - mode_setup
2016-04-16 14:40:15,648 [INFO @ controller.py:run:275] 3032 - Calling mode_setup with ['debug']
2016-04-16 14:40:16,265 [INFO @ vim_x.py:call:19] 3032 - ('bufnr', '/Users/tsliwkan/config/nvim/plugged/lldb.nvim/test/ab.c', 1)
2016-04-16 14:40:16,265 [INFO @ vim_x.py:call:19] 3032 - ('setbufvar', 2, '&bl', 1)
2016-04-16 14:40:16,266 [INFO @ vim_x.py:call:19] 3032 - ('bufnr', '/Users/tsliwkan/config/nvim/plugged/lldb.nvim/test/ab.c', 1)
2016-04-16 14:40:16,266 [INFO @ vim_x.py:call:19] 3032 - ('setbufvar', 2, '&bl', 1)
2016-04-16 14:40:16,266 [INFO @ vim_x.py:call:19] 3032 - ('bufnr', '/Users/tsliwkan/config/nvim/plugged/lldb.nvim/test/ab.c', 1)
2016-04-16 14:40:16,267 [INFO @ vim_x.py:call:19] 3032 - ('setbufvar', 2, '&bl', 1)
2016-04-16 14:40:19,652 [INFO @ controller.py:safe_call:69] 3032 - exec_command
2016-04-16 14:40:21,654 [INFO @ controller.py:safe_call:69] 3032 - put_stdin
2016-04-16 14:40:23,656 [INFO @ controller.py:safe_call:69] 3032 - exec_command
2016-04-16 14:40:23,657 [CRITICAL @ controller.py:safe_call:85] 3032 - Event loop thread is probably dead!

[tsliwkan]

Oops, the above test.log output is from

self.logger.info(method.__name__)

if I add the args argument I get

Note: `:LL-` commands are not bound with this test instance
Traceback (most recent call last):
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/logging/_
_init__.py", line 859, in emit
    msg = self.format(record)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/logging/_
_init__.py", line 732, in format
    return fmt.format(record)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/logging/_
_init__.py", line 471, in format
    record.message = record.getMessage()
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/logging/_
_init__.py", line 335, in getMessage
    msg = msg % self.args
TypeError: not all arguments converted during string formatting
Logged from file controller.py, line 69

[critiqjo]

Ah! It was not the problem with delay. GetSTDOUT here is returning None. I don't know why it does... Try inserting this condition in-between those lines:

out = self._process.GetSTDOUT(256)
if out is None:
  break
out += self._process.GetSTDERR(256)

And check if you're able to work with the plugin, and the process stdout is getting printed...

[critiqjo]

Oops, the above test.log output is from

Ya, that was a mistake from my part. Remove that line... (I forgot that str(args) was required)

[tsliwkan]

OK. I think this is working now. I changed controller.py a little bit more from your suggestion, the block in question now looks like

out = ''
stdout = self._process.GetSTDOUT(256)
if stdout is not None:
  out += stdout
stderr = self._process.GetSTDERR(256)
if stderr is not None:
  out += stderr 
if len(out) == 0:
  break

as I was still getting an error with += on str and None types from self._process.GetSTDERR(256). test/run.sh passed now, the term window outputs

Note: `:LL-` commands are not bound with this test instance
Debugger terminated! If you see no errors, everything's cool!
>>>

I also fired up my own "Hello world" in C, running the commands

:LLsession new
:LLmode debug
:LL continue

and the process exited with code 0!

[critiqjo]

Is "Hello world" actually printed in the log buffer? I'm guessing the debugger is not getting any process outputs now.

[tsliwkan]

In the pane [lldb]logs

(lldb) target create a.out
Current executable set to 'a.out' (x86_64).
(lldb) breakpoint set -n main
Breakpoint 1: where = a.out`main, address = 0x0000000100000f50
(lldb) process launch
Process 3295 launched: '/Users/tsliwkan/development/a.out' (x86_64)
(lldb) continue
Process 3295 resuming
Hello, world!

[critiqjo]

Okay, great!! I'll push that fix soon...

[tsliwkan]

Cheers! Thanks for the prompt replies. Also, thanks for your work on this plugin, it looks super slick.