tmux cant find sessions when testing in docker

Open
#265 2 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
45/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
docker, python, ubuntu
Domain
cli, devops, testing-qa

Research direction

Start by running the supplied test_tmux.py and Dockerfile with ubuntu:18.04, then compare the result with python:3.7-slim. Trace the session creation and lookup failure around the reported session_id error, and verify the fix by making docker build complete successfully with the reproduction test.

Written by the indexing model from the issue text.

Description

Steps to reproduce:
test_tmux.py

import libtmux
import pytest


@pytest.fixture
def server():
    server = libtmux.Server()
    return server


def test_can_start_tmux_session(server):
    server.new_session("test")
    assert server.has_session("test")
    server.kill_session("test")

Dockerfile:

FROM ubuntu:18.04

RUN apt-get update && apt install -y tmux python-pip
RUN pip install libtmux pytest

COPY test_tmux.py .
RUN pytest test_tmux.py

then docker build . fails with

        if 'session_id' not in kwargs:
>           raise ValueError('Session requires a `session_id`')
E           ValueError: Session requires a `session_id`

Interestingly, replacing 'ubuntu:18.04' with 'python:3.7-slim' works. I thought this might mean it was an issue with the apt version of pip (which I know is dodgy), but adding a 'pip install --upgrade pip' didn't help.

Dominant language
Python
Stars
1.2k
Forks
127
Avg merge
2h 13m
Merged PRs (30d)
1

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

More from tmux-python/libtmux

All issues in tmux-python/libtmux

Similar issues

More Python issues

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.