close #35 by adding head convenience method and updating HEAD aliasing

Author: jeremydaly

index.js

@@ -70,6 +70,7 @@ class API {
   patch(p,h) { this.METHOD('PATCH',p,h) }
   delete(p,h) { this.METHOD('DELETE',p,h) }
   options(p,h) { this.METHOD('OPTIONS',p,h) }
+  head(p,h) { this.METHOD('HEAD',p,h) }
 
 
   // METHOD: Adds method and handler to routes

lib/request.js

@@ -101,12 +101,11 @@ class REQUEST {
       }
     } // end for loop
 
-    // Alias HEAD to GET method
-    let method = this.method === 'HEAD' ? 'GET' : this.method
-
-    let route = routes['__'+method] ? routes['__'+method] :
-                (wildcard && wildcard['__'+method] ?
-                  wildcard['__'+method] : undefined)
+    // Select ROUTE if exist for method, alias HEAD requests, apply wildcards
+    let route = routes['__'+this.method] ? routes['__'+this.method] :
+        (this.method === 'HEAD' && routes['__GET'] ? routes['__GET'] :
+          (wildcard && wildcard['__'+this.method] ? wildcard['__'+this.method] :
+            undefined))
 
     // Check for the requested method
     if (route) {

test/routes.js

@@ -156,6 +156,14 @@ api.options('/test_options2/:param1/*', function(req,res) {
   res.status(200).json({ method: 'options', status: 'ok', path: '/test_options2/:param1/*', params:req.params})
 })
 
+api.get('/override/head/request', (req,res) => {
+  res.status(200).header('method','get').json({ method: 'get', path: '/override/head/request' })
+})
+
+api.head('/override/head/request', (req,res) => {
+  res.status(200).header('method','head').json({ method: 'head', path: '/override/head/request' })
+})
+
 /******************************************************************************/
 /***  BEGIN TESTS                                                           ***/
 /******************************************************************************/
@@ -304,6 +312,12 @@ describe('Route Tests:', function() {
       expect(result).to.deep.equal({ headers: { 'content-type': 'application/json' }, statusCode: 404, body: '', isBase64Encoded: false })
     }) // end it
 
+    it('Override HEAD request', async function() {
+      let _event = Object.assign({},event,{ path: '/override/head/request', httpMethod: 'head' })
+      let result = await new Promise(r => api.run(_event,{},(e,res) => { r(res) }))
+      expect(result).to.deep.equal({ headers: { 'content-type': 'application/json', 'method': 'head' }, statusCode: 200, body: '', isBase64Encoded: false })
+    }) // end it
+
   }) // end HEAD tests
 
   /******************/