test: allow running locally in isolated environment

Author: MunifTanjim

.github/workflows/ci.yml

@@ -40,11 +40,8 @@ jobs:
             chmod +x nvim.appimage
             mv nvim.appimage ./build/nvim
           }
-          git clone https://github.com/MunifTanjim/nui.nvim ~/.local/share/nvim/site/pack/vendor/start/nui.nvim
-          git clone --depth 1 https://github.com/nvim-lua/plenary.nvim ~/.local/share/nvim/site/pack/vendor/start/plenary.nvim
-          ln -s $(pwd) ~/.local/share/nvim/site/pack/vendor/start
 
       - name: Run tests
         run: |
             export PATH="${PWD}/build/:${PATH}"
-            make test
+            ./scripts/test.sh

.gitignore

@@ -41,3 +41,6 @@ luac.out
 
 # Vim tag files
 tags
+
+# Others
+.testcache

scripts/test.sh

@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+while [[ $# -gt 0 ]]; do
+  case "${1}" in
+    --clean)
+      shift
+      echo "[test] cleaning up environment"
+      rm -rf ./.testcache
+      echo "[test] envionment cleaned"
+      ;;
+    *)
+      shift
+      ;;
+  esac
+done
+
+function setup_environment() {
+  echo
+  echo "[test] setting up environment"
+  echo
+
+  local plugins_dir="./.testcache/site/pack/vendor/start"
+  if [[ ! -d "${plugins_dir}" ]]; then
+    mkdir -p "${plugins_dir}"
+  fi
+
+  if [[ ! -d "${plugins_dir}/nui.nvim" ]]; then
+    echo "[plugins] nui.nvim: installing..."
+    git clone https://github.com/MunifTanjim/nui.nvim "${plugins_dir}/nui.nvim"
+    echo "[plugins] nui.nvim: installed"
+    echo
+  fi
+
+  if [[ ! -d "${plugins_dir}/plenary.nvim" ]]; then
+    echo "[plugins] plenary.nvim: installing..."
+    git clone https://github.com/nvim-lua/plenary.nvim "${plugins_dir}/plenary.nvim"
+    echo "[plugins] plenary.nvim: installed"
+    echo
+  fi
+
+  echo "[test] environment ready"
+  echo
+}
+
+setup_environment
+
+make test

tests/init_follow_current_file.lua

@@ -1,7 +1,11 @@
 -- Need the absolute path as when doing the testing we will issue things like `tcd` to change directory
 -- to where our temporary filesystem lives
+local root_dir = vim.fn.fnamemodify(vim.trim(vim.fn.system("git rev-parse --show-toplevel")), ":p")
+
+vim.opt.packpath:prepend(string.format("%s", root_dir .. ".testcache/site"))
+
 vim.opt.rtp = {
-  vim.fn.fnamemodify(vim.trim(vim.fn.system("git rev-parse --show-toplevel")), ":p"),
+  root_dir,
   vim.env.VIMRUNTIME,
 }
 

tests/mininit.lua

@@ -1,7 +1,11 @@
 -- Need the absolute path as when doing the testing we will issue things like `tcd` to change directory
 -- to where our temporary filesystem lives
+local root_dir = vim.fn.fnamemodify(vim.trim(vim.fn.system("git rev-parse --show-toplevel")), ":p")
+
+vim.opt.packpath:prepend(string.format("%s", root_dir .. ".testcache/site"))
+
 vim.opt.rtp = {
-  vim.fn.fnamemodify(vim.trim(vim.fn.system("git rev-parse --show-toplevel")), ":p"),
+  root_dir,
   vim.env.VIMRUNTIME,
 }