add test case for #124 and tweak formatting

Author: jeremydaly

lib/request.js

@@ -159,8 +159,8 @@ class REQUEST {
     this.rawBody = this.app._event.body
 
     // Set the body (decode it if base64 encoded)
-    this.body = this.app._event.isBase64Encoded ? Buffer.from(this.app._event.body||'', 'base64').toString() : this.app._event.body
-    
+    this.body = this.app._event.isBase64Encoded ? Buffer.from(this.app._event.body || '', 'base64').toString() : this.app._event.body
+
     // Set the body
     if (this.headers['content-type'] && this.headers['content-type'].includes('application/x-www-form-urlencoded')) {
       this.body = QS.parse(this.body)

test/routes.js

@@ -609,6 +609,12 @@ describe('Route Tests:', function() {
       expect(result).to.deep.equal({ multiValueHeaders: { 'content-type': ['application/json'] }, statusCode: 200, body: '{"method":"post","status":"ok","body":"Test file for sendFile\\n"}', isBase64Encoded: false })
     }) // end it
 
+    it('With base64 encoding flagged and no body', async function() {
+      let _event = Object.assign({},event,{ path: '/test/base64', httpMethod: 'post', body: undefined, isBase64Encoded: true })
+      let result = await new Promise(r => api.run(_event,{},(e,res) => { r(res) }))
+      expect(result).to.deep.equal({ multiValueHeaders: { 'content-type': ['application/json'] }, statusCode: 200, body: '{"method":"post","status":"ok","body":""}', isBase64Encoded: false })
+    }) // end it
+
     it('Missing path: /not_found', async function() {
       let _event = Object.assign({},event,{ path: '/not_found', httpMethod: 'post' })
       let result = await new Promise(r => api.run(_event,{},(e,res) => { r(res) }))