re-add async iteration test

test/index.js

@@ -562,6 +562,25 @@ describe('_read()', () => {
         expect(res.payload).to.equal(body);
     });
 
+    it('supports async iteration', async () => {
+
+        const dispatch = async function (req, res) {
+
+            let buffer = '';
+            for await (const chunk of req) {
+                buffer = buffer + chunk.toString();
+            }
+
+            res.writeHead(200, { 'Content-Length': 0 });
+            res.end(buffer);
+            req.destroy();
+        };
+
+        const body = 'something special just for you';
+        const res = await Shot.inject(dispatch, { method: 'get', url: '/', payload: body });
+        expect(res.payload).to.equal(body);
+    });
+
     it('simulates split', async () => {
 
         const dispatch = function (req, res) {