Running tests in VSCode with Elixir and ElixirLS

launch.json

{
  // Use IntelliSense to learn about possible attributes.
  // Hover to view descriptions of existing attributes.
  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
  "version": "0.2.0",
  "configurations": [
    {
      "type": "mix_task",
      "name": "mix test",
      "request": "launch",
      "task": "test",
      "taskArgs": [
        "--include" ,"pending"
      ],
      "startApps": false,
      "projectDir": "${workspaceRoot}${config:elixirLS.projectDir}",
      "requireFiles": [
        "test/**/test_helper.exs",
        "test/**/*_test.exs"
      ]
    },
    {
      "type": "mix_task",
      "name": "mix test (single test)",
      "request": "launch",
      "task": "test",
      "taskArgs": [
        "--only", "test:test ${input:promptTestName}"
      ],
      "startApps": false,
      "projectDir": "${workspaceRoot}${config:elixirLS.projectDir}",
      "requireFiles": [
        "test/**/test_helper.exs",
        "test/**/*_test.exs"
      ]
    },
     {
      "type": "mix_task",
      "name": "mix test current file",
      "request": "launch",
      "task": "test",
      "taskArgs": [
        "${relativeFile}"
      ],
      "startApps": true,
      "projectDir": "${workspaceRoot}",
      "requireFiles": [
        "test/**/test_helper.exs",
        "${relativeFile}"
      ]
    },
    // Copied from: https://elixirforum.com/t/running-debugging-tests-in-vscode-with-elixirls/33837/7
    {
      "type": "mix_task",
      "name": "mix test current line number",
      "request": "launch",
      "task": "test",
      "taskArgs": [
        "${relativeFile}:${lineNumber}"
      ],
      "startApps": true,
      "projectDir": "${workspaceRoot}",
      "requireFiles": [
        "test/**/test_helper.exs",
        "${relativeFile}"
      ]
    }
  ],
  "inputs": [
    {
      "id": "promptTestName",
      "type": "promptString",
      "description": "Name of your test.",
    }
  ]
}