Mocha run and debug tests

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": "node",
            "request": "launch",
            "name": "Mocha Test All",
            "program": "${workspaceFolder}/node_modules/mocha/bin/_mocha",
            "args": [
                "--opts", 
                "${workspaceFolder}/test/mocha_dev.opts",
                "${workspaceFolder}/test"
            ],
            "env": {
                "NODE_ENV": "test"
            },
            "console": "integratedTerminal",
            "internalConsoleOptions": "neverOpen"
        },
        {
            "type": "node",
            "request": "launch",
            "name": "Mocha Current File",
            "program": "${workspaceFolder}/node_modules/mocha/bin/_mocha",
            "args": [
                "--opts", 
                "${workspaceFolder}/test/mocha_dev.opts",
                "${file}"
            ],
            "env": {
                "NODE_ENV": "test"
            },
            "console": "integratedTerminal",
            "internalConsoleOptions": "neverOpen"
        }
    ]
}