test: add initial tests and ci

.github/workflows/ci.yml

@@ -0,0 +1,51 @@
+name: Tests
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+# Cancel any in-progress CI runs for a PR if it is updated
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event_name == 'pull_request' && github.head_ref || github.sha }}
+  cancel-in-progress: true
+
+jobs:
+  unit_tests:
+    name: unit tests
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: ubuntu-20.04
+            url: https://github.com/neovim/neovim/releases/download/nightly/nvim-linux64.tar.gz
+          - os: ubuntu-20.04
+            url: https://github.com/neovim/neovim/releases/download/v0.6.0/nvim-linux64.tar.gz
+
+    steps:
+      - uses: actions/checkout@v2
+      - run: date +%F > todays-date
+      - name: Restore from todays cache
+        uses: actions/cache@v2
+        with:
+          path: _neovim
+          key: ${{ runner.os }}-${{ matrix.url }}-${{ hashFiles('todays-date') }}
+
+      - name: Prepare
+        run: |
+          test -d _neovim || {
+            mkdir -p _neovim
+            curl -sL ${{ matrix.url }} | tar xzf - --strip-components=1 -C "${PWD}/_neovim"
+          }
+          mkdir -p ~/.local/share/nvim/site/pack/vendor/start
+          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}/_neovim/bin:${PATH}"
+          export VIM="${PWD}/_neovim/share/nvim/runtime"
+          nvim --version
+          make test

.gitignore

@@ -1 +1,3 @@
+plenary.nvim/
+tests/data/
 .luarc.json

Makefile

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+all: test
+
+test:
+	nvim --headless --noplugin -u tests/minimal.vim +Test
+
+check:
+	stylua --color always --check .

tests/init_spec.lua

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+local e = vim.fn.fnameescape
+local session_dir = vim.fn.getcwd() .. "/tests/data/"
+require("persisted").setup({
+  dir = session_dir
+})
+
+describe("With default settings", function()
+  after_each(function()
+    -- vim.fn.system("rm -rf " .. e(session_dir))
+  end)
+
+  it("saves a session", function()
+    -- Edit a buffer
+    vim.cmd(":e tests/data/test.txt")
+    vim.cmd(":w")
+
+    -- Save the session
+    require("persisted").save()
+
+    -- Check that it is written to disk
+    assert.equals(vim.g.persisting, true)
+    assert.equals(vim.fn.system("ls tests/data | wc -l"), "2\n")
+  end)
+
+  it("loads a session", function()
+    -- Load a session
+    require("persisted").load()
+
+    -- Read the buffers contents
+    local content = vim.fn.getline(1, '$')
+
+    assert.equals(content[1], "This is a test file")
+  end)
+
+end)

tests/minimal.vim

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+if !isdirectory('plenary.nvim')
+  !git clone https://github.com/nvim-lua/plenary.nvim.git plenary.nvim
+  !git -C plenary.nvim reset --hard 1338bbe8ec6503ca1517059c52364ebf95951458
+endif
+
+set runtimepath+=plenary.nvim,.
+set noswapfile
+set noundofile
+
+runtime plugin/plenary.vim
+command Test PlenaryBustedDirectory tests/ {minimal_init = 'tests/minimal.vim'}