fastify#92 test: add test for onError option

index.js

@@ -89,7 +89,6 @@ function fastProxy (opts = {}) {
       }
       request(reqParams, (err, response) => {
         if (err) {
-
           // allow for errors to be passed to a custom callback
           if (onError) {
             onError(err, req, res)

test/4.opts.test.js

@@ -17,6 +17,10 @@ nock('http://dev.com')
     url: 'http://dev.com'
   })
 
+nock('http://dev.error')
+  .get('/service/error')
+  .replyWithError('Error')
+
 describe('fast-proxy smoke', () => {
   it('init', async () => {
     const fastProxy = require('../index')({
@@ -40,6 +44,10 @@ describe('fast-proxy smoke', () => {
         queryString: { age: 33 },
         onResponse (req, res, stream) {
           pump(stream, res)
+        },
+        onError (err, req, res) {
+          res.statusCode = 418
+          res.send(err)
         }
       })
     })
@@ -99,6 +107,15 @@ describe('fast-proxy smoke', () => {
       .expect(302)
   })
 
+  it('should allow for errors to be handled', async () => {
+    await request(gHttpServer)
+      .get('/service/error')
+      .set('base', 'http://dev.com')
+      .then(response => {
+        expect(response.statusCode).to.equal(418)
+      })
+  })
+
   it('close all', async () => {
     close()
     await gateway.close()