📝 denops_test

A Deno module designed for testing denops.vim. This module is intended to be used in the unit tests of denops plugins.

[!NOTE]

To use the test function, an environment variable DENOPS_TEST_DENOPS_PATH is required. Clone the denops.vim repository and set the path to this environment variable.

Additionally, the following environment variables are available to configure the behavior of the test function:

DENOPS_TEST_VIM_EXECUTABLE: Path to the Vim executable (default: “vim”)

DENOPS_TEST_NVIM_EXECUTABLE: Path to the Neovim executable (default: “nvim”)

DENOPS_TEST_VERBOSE: 1 or true to print Vim messages (echomsg)

DENOPS_TEST_CONNECT_TIMEOUT: Timeout [ms] for connecting to Vim/Neovim (default: 30000)

If you want to test denops plugins with a real Vim and/or Neovim process, use the test function to define a test case, as shown below:

import {
  assert,
  assertEquals,
  assertFalse,
} from "https://deno.land/std@0.210.0/assert/mod.ts";
import { test } from "https://deno.land/x/denops_test@v1.8.0/mod.ts";

test("vim", "Start Vim to test denops features", async (denops) => {
  assertFalse(await denops.call("has", "nvim"));
});

test({
  mode: "nvim",
  name: "Start Neovim to test denops features",
  fn: async (denops) => {
    assert(await denops.call("has", "nvim"));
  },
});

test({
  mode: "all",
  name: "Start Vim and Neovim to test denops features",
  fn: async (denops) => {
    assertEquals(await denops.call("abs", -4), 4);
  },
});

test({
  mode: "any",
  name: "Start Vim or Neovim to test denops features",
  fn: async (denops) => {
    assertEquals(await denops.call("abs", -4), 4);
  },
});

If you want to test denops plugins without a real Vim and/or Neovim process, use the DenopsStub class to create a stub instance of the Denops interface, as shown below:

import { assertEquals } from "https://deno.land/std@0.210.0/assert/mod.ts";
import { DenopsStub } from "https://deno.land/x/denops_test@v1.8.0/mod.ts";

Deno.test("denops.call", async () => {
  const denops = new DenopsStub({
    call: (fn, ...args) => {
      return Promise.resolve([fn, ...args]);
    },
  });
  assertEquals(await denops.call("foo", "bar"), ["foo", "bar"]);
});

GitHub Action

Copy and modify the following GitHub Workflow to run tests in GitHub Action

# Use 'bash' as default shell even on Windows
defaults:
  run:
    shell: bash --noprofile --norc -eo pipefail {0}

jobs:
  test:
    strategy:
      matrix:
        runner:
          - windows-latest
          - macos-latest
          - ubuntu-latest
        deno_version:
          - "1.38.x"
          - "1.x"
        host_version:
          - vim: "v9.0.2189"
            nvim: "v0.9.4"

    runs-on: ${{ matrix.runner }}

    steps:
      - run: git config --global core.autocrlf false
        if: runner.os == 'Windows'

      - uses: actions/checkout@v4

      - uses: denoland/setup-deno@v1
        with:
          deno-version: ${{ matrix.deno_version }}

      - name: Get denops
        run: |
          git clone https://github.com/vim-denops/denops.vim /tmp/denops.vim
          echo "DENOPS_TEST_DENOPS_PATH=/tmp/denops.vim" >> "$GITHUB_ENV"

      - uses: rhysd/action-setup-vim@v1
        id: vim
        with:
          version: ${{ matrix.host_version.vim }}

      - uses: rhysd/action-setup-vim@v1
        id: nvim
        with:
          neovim: true
          version: ${{ matrix.host_version.nvim }}

      - name: Export executables
        run: |
          echo "DENOPS_TEST_VIM_EXECUTABLE=${{ steps.vim.outputs.executable }}" >> "$GITHUB_ENV"
          echo "DENOPS_TEST_NVIM_EXECUTABLE=${{ steps.nvim.outputs.executable }}" >> "$GITHUB_ENV"

      - name: Check versions
        run: |
          deno --version
          ${DENOPS_TEST_VIM_EXECUTABLE} --version
          ${DENOPS_TEST_NVIM_EXECUTABLE} --version

      - name: Perform pre-cache
        run: |
          deno cache ${DENOPS_TEST_DENOPS_PATH}/denops/@denops-private/mod.ts
          deno cache ./denops/your_plugin/main.ts

      - name: Run tests
        run: deno test -A

License

The code follows the MIT license, as stated in LICENSE. Contributors are required to agree that any modifications submitted to this repository adhere to the license.