Migrated tests to jest

Used jest-codemods to migrate, will have to pass everything by hand before we can merge.

test/getURLParameters/getURLParameters.js

@@ -1,6 +0,0 @@
-const getURLParameters = url =>
-(url.match(/([^?=&]+)(=([^&]*))/g) || []).reduce(
-(a, v) => ((a[v.slice(0, v.indexOf('='))] = v.slice(v.indexOf('=') + 1)), a),
-{}
-);
-module.exports = getURLParameters;