Test migration to jest by hand

Apparently using regular expressions is way easier.

test/call/call.test.js

@@ -1,10 +1,9 @@
 const expect = require('expect');
 const call = require('./call.js');
 
-test('Testing call', () => {
-  //For more information on all the methods supported by tape
-  //Please go to https://github.com/substack/tape
-  expect(typeof call === 'function').toBeTruthy();
-  //t.deepEqual(call(args..), 'Expected');
+
+  test('call is a Function', () => {
+  expect(call).toBeInstanceOf(Function);
+});
   t.looseEqual(call('map', x => x * 2)([1, 2, 3]), [2, 4, 6], 'Calls function on given object');
-});
+