feat: add dummy test for linux

.github/workflows/github-actions.yml

@@ -20,3 +20,12 @@ jobs:
         uses: actions/checkout@main
       - name: lint files against shfmt
         run: make lint_shfmt
+  test-setup-linux:
+    runs-on: ubuntu-latest
+    steps:
+      - name: install soft
+        run: sudo apt install -y tmux git
+      - name: checkout repo
+        uses: actions/checkout@main
+      - name: test setup
+        run: ./tests/linux_setup_plugin_and_run.sh

tests/linux_setup_plugin_and_run.sh

@@ -0,0 +1,54 @@
+#!/bin/bash
+
+# this test is meant to run on linux
+#
+# test target is:
+# - ubuntu 20.04 LTS
+# - bash
+
+# default value of status-left section from gruvbox theme
+readonly STATUS_LEFT_DEFAULT="#[bg=colour241,fg=colour248] #S #[bg=colour237,fg=colour241,nobold,noitalics,nounderscore]"
+
+main() {
+  if [[ "$(uname)" != "Linux" ]]; then
+    echo "NOT LINUX. Failed & exit."
+    exit 1
+  fi
+
+  sudo apt update -y
+  sudo apt install -y tmux git
+
+  mkdir -p ~/.tmux/plugins/
+  git clone https://github.com/tmux-plugins/tpm ~/.tmux/plugins/tpm
+
+  cat <<EOF >~/.tmux.conf
+# List of plugins
+set -g @plugin 'tmux-plugins/tpm'
+set -g @plugin 'tmux-plugins/tmux-sensible'
+
+# Other plugins
+set -g @plugin 'egel/tmux-gruvbox'
+set -g @tmux-gruvbox 'dark'
+
+# Initialize TMUX plugin manager (keep this line at the very bottom of tmux.conf)
+run '~/.tmux/plugins/tpm/tpm'
+EOF
+
+  cat ~/.tmux.conf
+
+  # manually install plugins
+  bash -c "${HOME}/.tmux/plugins/tpm/scripts/install_plugins.sh install_plugins"
+
+  # start new detached session
+  tmux new -d
+
+  # get status of something from theme
+  _status_left_current=$(tmux show-option -g status-left)
+  if [[ "$STATUS_LEFT_DEFAULT" != "$_status_left_current" ]]; then
+    exit 1
+  fi
+
+  exit 0
+}
+
+main "$@"