Mitigate array-of-statuses' impact on JSON bodies

fixes a regression in #715 / v6.1.4

lib/test.js

@@ -98,6 +98,7 @@ function wrapAssertFn(assertFn) {
  *   .expect(200, body)
  *   .expect('Some body')
  *   .expect('Some body', fn)
+ *   .expect(['json array body', { key: 'val' }])
  *   .expect('Content-Type', 'application/json')
  *   .expect('Content-Type', 'application/json', fn)
  *   .expect(fn)
@@ -127,7 +128,7 @@ Test.prototype.expect = function(a, b, c) {
   }
 
   // multiple statuses
-  if (Array.isArray(a)) {
+  if (Array.isArray(a) && a.every(val => typeof val === 'number')) {
     this._asserts.push(wrapAssertFn(this._assertStatusArray.bind(this, a)));
     return this;
   }

test/supertest.js

@@ -573,6 +573,17 @@ describe('request(app)', function () {
         });
     });
 
+    it('should support parsed response arrays', function (done) {
+      const app = express();
+      app.get('/', function (req, res) {
+        res.status(200).json(['a', { id: 1 }]);
+      });
+
+      request(app)
+        .get('/')
+        .expect(['a', { id: 1 }], done);
+    });
+
     it('should support regular expressions', function (done) {
       const app = express();