Create include array for zip step if undefined

Refs #16
Similar to 6c5523c

Signed-off-by: Mike Fiedler <[email protected]>

Author: miketheman

lib/zip.js

@@ -1,5 +1,6 @@
 const fse = require('fs-extra');
 const path = require('path');
+const _ = require('lodash');
 const {zipDirectory} = require('./zipService');
 const BbPromise = require('bluebird');
 
@@ -13,6 +14,9 @@ function addVendorHelper() {
   if (this.options.zip) {
     this.serverless.cli.log('Adding Python requirements helper...');
 
+    if (!_.get(this.serverless.service, 'package.include'))
+      _.set(this.serverless.service, ['package', 'include'], []);
+
     this.serverless.service.package.include.push('unzip_requirements.py');
 
     return fse.copyAsync(

test.bats

@@ -141,3 +141,10 @@ teardown() {
     unzip .serverless/sls-py-req-test.zip -d puck
     ! ls puck/hug
 }
+
+@test "py3.6 can package flask with zip option and no explicit include" {
+    sed -i'.bak' -e 's/zip: *false/zip: true/' -e 's/include://' -e 's/^.*handler.py//' serverless.yml
+    sls package
+    unzip .serverless/sls-py-req-test.zip -d puck
+    ls puck/.requirements.zip puck/unzip_requirements.py
+}