add endpoint testing example to FAQ

docs/recipes/endpoint-testing.md

@@ -0,0 +1,24 @@
+#Endpoint Testing
+
+AVA doesn't have an official assertion library for endpoints, but a great option is [`supertest-as-promised`](https://github.com/WhoopInc/supertest-as-promised).
+Since the tests run concurrently, it's a best practice to create a fresh server instance for each test because if we referenced the same instance, it could be mutated between tests. This can be accomplished with a `beforeEach` and `context`, or even more simply with a factory function:
+```
+function makeApp() {
+  const app = express();
+  app.post('/signup', signupHandler);
+  return app;
+}
+```
+
+Next, just inject your server instance into supertest. The only gotcha is to use a promise or async/await syntax instead of supertest's `end` method:
+```
+test('signup:Success', async t => {
+  t.plan(2);
+  const app = makeApp();
+  const res = await request(app)
+    .post('/signup')
+    .send({email: '[email protected]', password: '123123'})
+  t.is(res.status, 200);
+  t.is(res.body.email, '[email protected]');
+});
+```

readme.md

@@ -20,6 +20,7 @@ Translations: [Español](https://github.com/sindresorhus/ava-docs/blob/master/es
 - [API](#api)
 - [Assertions](#assertions)
 - [FAQ](#faq)
+- [Recipes](#recipes)
 
 
 ## Why AVA?
@@ -699,6 +700,10 @@ AVA, not Ava or ava. Pronounced [`/ˈeɪvə/` ay-və](media/pronunciation.m4a?ra
 
 Concurrency is not parallelism. It enables parallelism. [Learn more.](http://stackoverflow.com/q/1050222)
 
+## Recipes
+
+- [Endpoint testing](/docs/recipes/endpoint-testing.md)
+
 
 ## Support