Test migration to jest by hand

Apparently using regular expressions is way easier.

test/initialize2DArray/initialize2DArray.js

@@ -0,0 +1,3 @@
+const initialize2DArray = (w, h, val = null) =>
+Array.from({ length: h }).map(() => Array.from({ length: w }).fill(val));
+module.exports = initialize2DArray;

test/initialize2DArray/initialize2DArray.test.js

@@ -0,0 +1,9 @@
+const expect = require('expect');
+const initialize2DArray = require('./initialize2DArray.js');
+
+
+  test('initialize2DArray is a Function', () => {
+  expect(initialize2DArray).toBeInstanceOf(Function);
+});
+  t.deepEqual(initialize2DArray(2, 2, 0), [[0,0], [0,0]], "Initializes a 2D array of given width and height and value");
+