Test migration to jest by hand

Apparently using regular expressions is way easier.

test/merge/merge.test.js

@@ -0,0 +1,19 @@
+const expect = require('expect');
+const merge = require('./merge.js');
+
+
+  test('merge is a Function', () => {
+  expect(merge).toBeInstanceOf(Function);
+});
+  const object = {
+    a: [{ x: 2 }, { y: 4 }],
+    b: 1
+  };
+  const other = {
+    a: { z: 3 },
+    b: [2, 3],
+    c: 'foo'
+  };
+  t.deepEqual(merge(object, other), { a: [ { x: 2 }, { y: 4 }, { z: 3 } ], b: [ 1, 2, 3 ], c: 'foo' }, 'Merges two objects');
+  
+