Test migration to jest by hand

Apparently using regular expressions is way easier.

test/chainAsync/chainAsync.test.js

@@ -1,10 +1,10 @@
 const expect = require('expect');
 const chainAsync = require('./chainAsync.js');
 
-test('Testing chainAsync', () => {
-  //For more information on all the methods supported by tape
-  //Please go to https://github.com/substack/tape
-  expect(typeof chainAsync === 'function').toBeTruthy();
+
+  test('chainAsync is a Function', () => {
+  expect(chainAsync).toBeInstanceOf(Function);
+});
   chainAsync([
     next => {
       next();
@@ -14,6 +14,9 @@ test('Testing chainAsync', () => {
         next();
       })();
     },
-    next => {}
+    next => {
+      t.pass("Calls all functions in an array");
+    }
   ]);
-});
+  
+