fix incorrect detection of include shorthand

lib/dispatch/include.js

@@ -51,7 +51,7 @@ module.exports = function include (context) {
     }
 
   // Cast `include` into an array if it's using shorthand.
-  if (!Array.isArray(include[0])) include = [ include ]
+  if (include[0] && !Array.isArray(include[0])) include = [ include ]
 
   return Promise.all(map(include, function (fields) {
     return new Promise(function (resolve, reject) {

package.json

@@ -51,6 +51,7 @@
     "postcss-cssnext": "^2.11.0",
     "postcss-import": "^10.0.0",
     "rimraf": "^2.6.1",
+    "spy": "^1.0.0",
     "tapdance": "^5.0.4",
     "tape-run": "^3.0.0",
     "uglify-js": "^3.0.22"

test/integration/methods/find.js

@@ -1,6 +1,7 @@
 'use strict'
 
 const run = require('tapdance')
+const spy = require('spy')
 
 const testInstance = require('../test_instance')
 const stderr = require('../../stderr')
@@ -14,6 +15,12 @@ const primaryKey = constants.primary
 run((assert, comment) => {
   comment('get collection')
   return findTest({
+    before: store => spy(store.adapter, 'find'),
+    after: store => {
+      assert(store.adapter.find.callCount === 1,
+        'gets records using a single fetch')
+      store.adapter.find.restore()
+    },
     request: [ 'user' ],
     response: response => {
       assert(response.payload.records.length === 3, 'gets all records')
@@ -92,12 +99,16 @@ function findTest (o) {
   .then(instance => {
     store = instance
 
+    if (o.before) o.before(store)
+
     return store.find.apply(store, o.request)
   })
 
   .then(response => {
     o.response(response)
 
+    if (o.after) o.after(store)
+
     return store.disconnect()
   })