Add minimal CI

Author: kazk

.github/workflows/ci.yml

@@ -0,0 +1,32 @@
+# Minimal CI to see the output
+name: CI
+on:
+  push:
+    branches:
+      - main
+    tags-ignore:
+      - "v*"
+
+  pull_request:
+
+jobs:
+  test:
+    strategy:
+      matrix:
+        lua-version: ["5.3", "5.4"]
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v3
+      - uses: leafo/gh-actions-lua@v10
+        with:
+          luaVersion: ${{ matrix.lua-version }}
+      - uses: leafo/gh-actions-luarocks@v4
+
+      - name: build
+        run: |
+          luarocks install busted
+          luarocks make
+
+      - name: test
+        run: |
+          busted -o codewars || true

README.md

@@ -1,3 +1,24 @@
 # busted-codewars
 
 Codewars output handler for [Busted](https://github.com/lunarmodules/busted).
+
+## Install
+
+```bash
+luarocks install busted-codewars
+```
+
+## Usage
+
+```bash
+busted -o codewars
+```
+
+## Develop
+
+Add example tests in `spec/` with a file name matching `*_spec.lua`.
+Then run the tests with Codewars output:
+
+```bash
+luarocks test -- -o codewars
+```

spec/example_spec.lua

@@ -0,0 +1,28 @@
+-- Example from https://lunarmodules.github.io/busted/
+describe("Busted unit testing framework", function()
+  describe("should be awesome", function()
+    it("should be easy to use", function()
+      assert.truthy("Yup.")
+    end)
+
+    it("should have lots of features", function()
+      -- deep check comparisons!
+      assert.are.same({ table = "great"}, { table = "great" })
+
+      -- or check by reference!
+      assert.are_not.equal({ table = "great"}, { table = "great"})
+
+      assert.truthy("this is a string") -- truthy: not false or nil
+
+      assert.True(1 == 1)
+      assert.is_true(1 == 1)
+
+      assert.falsy(nil)
+      assert.has_error(function() error("Wat") end, "Wat")
+    end)
+
+    it("should provide some shortcuts to common functions", function()
+      assert.are.unique({{ thing = 1 }, { thing = 2 }, { thing = 3 }})
+    end)
+  end)
+end)