chore: configure lldebugger for tests

.cspell.json

@@ -23,6 +23,7 @@
     "keygrabber",
     "ldoc",
     "leafo",
+    "lldebugger",
     "luacheck",
     "luacheckrc",
     "luadoc",

.vscode/launch.json

@@ -0,0 +1,18 @@
+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "Busted",
+      "type": "lua-local",
+      "request": "launch",
+      "program": {
+        "command": "luarocks"
+      },
+      "args": ["test"]
+      // "ignorePatterns": "^/usr"
+    }
+  ]
+}

spec/helper.lua

@@ -1,3 +1,9 @@
+-- Enable lua-local-debugger
+-- https://github.com/tomblind/local-lua-debugger-vscode
+if os.getenv "LOCAL_LUA_DEBUGGER_VSCODE" == "1" then
+   require("lldebugger").start()
+end
+
 -- Fake awesome modules
 package.loaded["gears.table"] = {
    hasitem = function(t, item)