Add lua coverage in different job

.github/workflows/lua-cov.yml

@@ -0,0 +1,32 @@
+name: Lua
+
+on:
+  push:
+    paths:
+    - 'lua/**'
+    - '!lua/README.rst'
+  schedule:
+  - cron: "0 0 1 * *"
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  test:
+    runs-on: macos-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Install dependencies
+      run: brew install [email protected] luarocks
+
+    - run: sudo luarocks install luacov
+
+    - run: lua -v && make lu_test COV=true
+
+    - run: find ./lua -print | sort
+
+    - run: bash <(curl -s https://codecov.io/bash) -t ${{ secrets.CODECOV_TOKEN }} -F Lua

lua/Makefile

@@ -1,5 +1,6 @@
 BLUE=\033[0;34m
 NC=\033[0m # No Color
+COV?=false
 
 .PHONY: help
 help:
@@ -9,7 +10,11 @@ help:
 
 .PHONY: test
 test: ../LICENSE
+ifneq ($(COV),false)
+	@lua -lluacov test.lua && luacov
+else
 	@lua test.lua
+endif
 
 test_%:
 	@$(MAKE) test $(MFLAGS)

lua/test.lua

@@ -1,3 +1,5 @@
+local has_luacov = package.loaded['luacov'] ~= nil
+
 function loadlib(...)
     local libname = select(1, ...)
     local length = select("#", ...)
@@ -59,7 +61,7 @@ local function check_problem(file_name, expected_answer, is_slow, problem_name)
         )
     end
 
-    if not is_slow and elapsed_time > 60 then
+    if not is_slow and not has_luacov and elapsed_time > 60 then
         error(
             "Problem " .. problem_name .. " took ~" .. string.format("%.3f", elapsed_time) ..
             "s, exceeding the expected time limit of 60s."