Test migration to jest by hand

Apparently using regular expressions is way easier.

test/distance/distance.js

@@ -0,0 +1,2 @@
+const distance = (x0, y0, x1, y1) => Math.hypot(x1 - x0, y1 - y0);
+module.exports = distance;

test/distance/distance.test.js

@@ -0,0 +1,12 @@
+const expect = require('expect');
+const distance = require('./distance.js');
+
+
+  test('distance is a Function', () => {
+  expect(distance).toBeInstanceOf(Function);
+});
+  test('Calculates the distance between two points', () => {
+  expect(distance(1, 1, 2, 3), 2.23606797749979).toBe()
+});
+  
+