VSCode Elixir umbrella app tests

mix-test-wrapper.rb

#!/usr/bin/env ruby
test_file = ARGV[0]
line_no_arg = ARGV[1]

parts = test_file.scan(/.*apps\/(.*?)\/(.*)/).last
app = parts[0]
test_file_relative = parts[1]

line_no = line_no_arg ? ":#{line_no_arg}" : ""

exec("cd $(git rev-parse --show-toplevel)/apps/#{app} && mix test #{test_file_relative}#{line_no}")

tasks.json

{
    // See https://go.microsoft.com/fwlink/?LinkId=733558
    // for the documentation about the tasks.json format
    "version": "2.0.0",
    "tasks": [
        {
            "label": "Run all tests",
            "type": "shell",
            "command": "clear; ./script/mix-test-wrapper.rb ${relativeFile}",
            "problemMatcher": [
              "$mixCompileError",
              "$mixCompileWarning",
              "$mixTestFailure"
            ]
          },
        {
            "label": "Run current test",
            "type": "shell",
            "command": "clear; ./script/mix-test-wrapper.rb ${relativeFile} ${lineNumber}",
            "problemMatcher": [
              "$mixCompileError",
              "$mixCompileWarning",
              "$mixTestFailure"
            ],
            "group": {
              "kind": "test",
              "isDefault": true
            }
          }
    ]
}