Jest runs no tests with React application - node.js

Question

I have the following simple test in a t.test.js file in my React repo
test('sum', () => {
expect(1+1).toBe(3);
});
I followed the steps to set up Jest using the official guide.
However, when I run npm test, nothing happens. This is the output I get before Jest exits:
> # test
> jest
Using Jest CLI v0.8.2, jasmine1
What could be the problem? No tests are being run in my repository. Here is a dump of my package.json if necessary:
{
"private": true,
"engines": {
"node": ">=5.0 <6",
"npm": ">=3.3 <4"
},
"dependencies": {
"#google/maps": "^0.4.5",
"auth0-lock": "^10.24.3",
"autosuggest-highlight": "^3.1.1",
"aws-sdk": "^2.202.0",
"babel-polyfill": "6.9.1",
"babel-runtime": "6.9.2",
"bluebird": "3.1.1",
"body-parser": "^1.18.2",
"classnames": "2.2.1",
"cookie-parser": "^1.4.3",
"cors": "^2.8.3",
"cron": "^1.3.0",
"dotenv": "^2.0.0",
"downloadjs": "^1.4.7",
"eventemitter3": "1.1.1",
"express": "4.13.3",
"express-formidable": "^1.0.0",
"express-jwt": "^5.1.0",
"fastclick": "1.0.6",
"fbjs": "0.5.1",
"fetch-jsonp": "^1.1.3",
"flux": "2.1.1",
"formsy-react": "^0.19.5",
"front-matter": "2.0.1",
"fuse.js": "^2.5.0",
"google-libphonenumber": "^3.0.12",
"google-map-react": "^0.27.0",
"google-maps-react": "^1.1.2",
"history": "1.16.0",
"intercom-client": "^2.9.2",
"isomorphic-style-loader": "^4.0.0",
"jade": "1.11.0",
"json-loader": "^0.5.7",
"mailchimp-api-v3": "^1.8.0",
"markdown": "^0.5.0",
"mixpanel": "^0.8.0",
"mixpanel-browser": "^2.17.1",
"moment": "^2.20.1",
"moment-timezone": "^0.5.14",
"mongodb": "2.1.7",
"morgan": "^1.9.0",
"node-fetch": "1.3.3",
"normalize.css": "3.0.3",
"passport-auth0": "^0.6.1",
"passport-http": "^0.3.0",
"rc-progress": "^2.2.5",
"react": "^0.14.9",
"react-addons-create-fragment": "^0.14.8",
"react-autosuggest": "^9.3.4",
"react-day-picker": "^2.4.0",
"react-dom": "^0.14.9",
"react-redux": "^4.4.1",
"react-routing": "0.0.6",
"react-scrollable-anchor": "^0.5.0",
"react-share": "^1.19.1",
"react-stripe-checkout": "^1.8.0",
"redux": "^3.3.1",
"sendgrid": "^2.0.0",
"source-map-support": "0.4.0",
"stripe": "^4.25.0",
"tempy": "^0.2.1",
"twilio": "^2.9.1",
"twitter": "^1.7.0",
"underscore": "^1.8.3",
"whatwg-fetch": "0.10.1",
"xhr2": "^0.1.3"
},
"devDependencies": {
"assets-webpack-plugin": "^3.4.0",
"autoprefixer": "^6.1.2",
"babel-cli": "^6.26.0",
"babel-core": "^6.26.0",
"babel-eslint": "^6.0.4",
"babel-jest": "^22.4.1",
"babel-loader": "^6.2.4",
"babel-plugin-react-transform": "^2.0.2",
"babel-plugin-rewire": "^1.0.0-rc-3",
"babel-plugin-transform-class-properties": "^6.24.1",
"babel-plugin-transform-react-constant-elements": "^6.8.0",
"babel-plugin-transform-react-inline-elements": "^6.8.0",
"babel-plugin-transform-react-remove-prop-types": "^0.2.7",
"babel-plugin-transform-runtime": "^6.9.0",
"babel-preset-env": "^1.6.1",
"babel-preset-es2015": "^6.9.0",
"babel-preset-node5": "^11.1.0",
"babel-preset-react": "^6.24.1",
"babel-preset-stage-0": "^6.5.0",
"babel-register": "^6.26.0",
"babel-template": "^6.26.0",
"babel-types": "^6.26.0",
"browser-sync": "^2.23.6",
"css-loader": "^0.28.10",
"csscomb": "^3.1.8",
"del": "^2.2.0",
"eslint": "^1.10.3",
"eslint-config-airbnb": "^2.1.1",
"eslint-loader": "^1.1.1",
"eslint-plugin-react": "^3.11.3",
"extend": "^3.0.0",
"file-loader": "^0.8.5",
"gaze": "^0.5.2",
"git-repository": "^0.1.1",
"glob": "^6.0.1",
"jest": "^22.4.2",
"jest-cli": "^0.8.2",
"jscs": "^2.7.0",
"mkdirp": "^0.5.1",
"ncp": "^2.0.0",
"postcss": "^5.2.18",
"postcss-import": "^7.1.3",
"postcss-loader": "^0.8.0",
"precss": "^1.3.0",
"react-test-renderer": "^16.2.0",
"react-transform-catch-errors": "^1.0.0",
"react-transform-hmr": "^1.0.1",
"redbox-react": "1.2.0",
"replace": "^0.3.0",
"superagent": "^3.8.2",
"supertest": "^3.0.0",
"url-loader": "^0.5.7",
"webpack": "^1.13.0",
"webpack-hot-middleware": "^2.21.0",
"webpack-middleware": "^1.5.1",
"webpack-node-externals": "^1.6.0"
},
"babel": {
"presets": [
"react",
"node5",
"stage-0"
],
"env": {
"test": {
"plugins": [
"rewire"
]
}
},
"plugins": [
"transform-class-properties"
]
},
"jest": {
"rootDir": "./src"
},
"scripts": {
"lint": "eslint src tools && jscs src tools",
"csslint": "csscomb src/components --lint --verbose",
"csscomb": "csscomb src/components --verbose",
"test": "jest",
"clean": "babel-node tools/run clean",
"copy": "babel-node tools/run copy",
"bundle": "babel-node tools/run bundle",
"build": "babel-node tools/run build",
"deploy": "babel-node tools/run deploy",
"start": "babel-node tools/run start"
}
}