Test migration to jest by hand

Apparently using regular expressions is way easier.

test/toKebabCase/toKebabCase.js

@@ -0,0 +1,7 @@
+const toKebabCase = str =>
+str &&
+str
+.match(/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g)
+.map(x => x.toLowerCase())
+.join('-');
+module.exports = toKebabCase;

test/toKebabCase/toKebabCase.test.js

@@ -0,0 +1,24 @@
+const expect = require('expect');
+const toKebabCase = require('./toKebabCase.js');
+
+
+  test('toKebabCase is a Function', () => {
+  expect(toKebabCase).toBeInstanceOf(Function);
+});
+  t.equal(toKebabCase('camelCase'), 'camel-case', "toKebabCase('camelCase') returns camel-case");
+  t.equal(toKebabCase('some text'), 'some-text', "toKebabCase('some text') returns some-text");
+  t.equal(toKebabCase('some-mixed-string With spaces-underscores-and-hyphens'), 'some-mixed-string-with-spaces-underscores-and-hyphens', "toKebabCase('some-mixed-string With spaces-underscores-and-hyphens') returns some-mixed-string-with-spaces-underscores-and-hyphens");
+  t.equal(toKebabCase('IAmListeningToFMWhileLoadingDifferentURLOnMyBrowserAndAlsoEditingSomeXMLAndHTML'), 'i-am-listening-to-fm-while-loading-different-url-on-my-browser-and-also-editing-some-xml-and-html', "toKebabCase('IAmListeningToFMWhileLoadingDifferentURLOnMyBrowserAndAlsoEditingSomeXMLAndHTML') returns i-am-listening-to-fm-while-loading-different-url-on-my-browser-and-also-editing-some-xml-and-html");
+  t.equal(toKebabCase(), undefined, 'toKebabCase() return undefined');
+  t.throws(() => toKebabCase([]), 'toKebabCase([]) throws an error');
+  t.throws(() => toKebabCase({}), 'toKebabCase({}) throws an error');
+  t.throws(() => toKebabCase(123), 'toKebabCase(123) throws an error');
+
+  let start = new Date().getTime();
+  toKebabCase('IAmListeningToFMWhileLoadingDifferentURLOnMyBrowserAndAlsoEditingSomeXMLAndHTML');
+  let end = new Date().getTime();
+  test('toKebabCase(IAmListeningToFMWhileLoadingDifferentURLOnMyBrowserAndAlsoEditingSomeXMLAndHTML) takes less than 2s to run', () => {
+  expect((end - start) < 2000).toBeTruthy();
+});
+  
+