testem.json

{
    "__COMMENT__": "https://github.com/drewzboto/grunt-connect-proxy/issues/70 npm install grunt-connect-proxy@0.1.10",
    "launchers": {
      "Mocha": {
        "exe": "node",
        "args": ["tests/mocha-node.js"],
        "protocol": "tap"
      },
      "ChromiumNoSandbox": {
        "protocol": "browser",
        "command": "chromium --user-data-dir=/tmp/testem.chromium --no-default-browser-check --no-first-run --ignore-certificate-errors --no-sandbox --test-type --disable-renderer-backgrounding --disable-background-timer-throttling <url>"
      }
    },
    "launch_in_dev": ["Chrome", "Mocha"],
    "launch_in_ci": ["Chrome", "Mocha"],
    "test_page": "tests/index.mustache"
}