{
  "framework": "mocha",
  "before_tests": "gulp espower",
  "on_exit": "rm -rf ./powered-test/",
  "src_files": [
    "observer.js",
    "test/manifest.js"
  ],
  "serve_files": [
    "./observer.js",
    "./powered-test/manifest.js"
  ]
}

{
  "framework": "mocha",
  "before_tests": "gulp espower",
  "on_exit": "rm -rf ./powered-test/",
  "src_files": [
    "observer.js",
    "test/**/*.js"
  ],
  "serve_files": [
    "./observer.js",
    "./powered-test/manifest.js"
  ]
}

Fix regression: Testem don't watch test files.
Fix regression: Testem don't watch test files.

This regression was introduced by 9dc7b95578ec036c8951854975c6b059d693dd10.
