fix(ci): fix testing workflow

.github/workflows/tests.yml

@@ -1,47 +1,25 @@
----
-name: Run tests
+name: Test
+
 on:
-  pull_request: ~
   push:
-    branches:
-      - main
+  pull_request:
 
 jobs:
-  build:
-    name: Run tests
+  test:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        neovim_version: ["nightly"]
+        nvim-versions: ["stable", "nightly"]
 
+    name: test
     steps:
-      - uses: actions/checkout@v3
-      - run: date +%F > todays-date
-      - name: Restore cache for today's nightly.
-        uses: actions/cache@v2
-        with:
-          path: _neovim
-          key: ${{ runner.os }}-x64-${{ hashFiles('todays-date') }}
-
-      - name: Prepare plenary
-        run: |
-          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: checkout
+        uses: actions/checkout@v3
 
-      - name: Setup neovim
-        uses: rhysd/action-setup-vim@v1
+      - uses: rhysd/action-setup-vim@v1
         with:
           neovim: true
-          version: ${{ matrix.neovim_version }}
+          version: ${{ matrix.nvim-versions }}
 
-      - name: Run tests
-        run: |
-          nvim \
-            --headless \
-            --noplugin \
-            -u tests/minimal.vim \
-            -c "PlenaryBustedDirectory tests/ {minimal_init = 'tests/minimal.vim'}"
+      - name: run tests
+        run: make test