support multiple GET responses per file

Since windows does not support special characters in the file names this
allows for all responses to a certian get request to be in one file and
distinquished like POST responses would be split by new lines and header
lines.

fixes #19

canned.js

@@ -4,7 +4,8 @@ var url = require('url')
 var fs = require('fs')
 var util = require('util')
 var Response = require('./lib/response')
-var qs = require('querystring')
+var querystring = require('querystring')
+var url = require('url')
 
 function Canned(dir, options) {
   this.logger = options.logger
@@ -292,16 +293,27 @@ Canned.prototype.responseFilter = function (req, res) {
   var that = this
   var body = ''
 
-  // assemble response body if POST/PUT
-  if(req.method === 'PUT' || req.method === 'POST') {
+  // assemble response body if GET/POST/PUT
+  switch(req.method) {
+  case 'PUT':
+  case 'POST':
     req.on('data', function (data) {
       body += data
     })
     req.on('end', function () {
-      that.responder(qs.parse(body), req, res)
+      that.responder(querystring.parse(body), req, res)
     })
-  } else {
+    break;
+  case 'GET':
+    var query = url.parse(req.url).query
+    if (query && query.length > 0) {
+      body = querystring.parse(query)
+    }
+    that.responder(body, req, res)
+    break;
+  default:
     that.responder(body, req, res)
+    break;
   }
 }
 

spec/canned.spec.js

@@ -1,5 +1,5 @@
 "use strict";
-
+var querystring = require("querystring")
 var canned = require('../canned')
 
 describe('canned', function () {
@@ -383,6 +383,31 @@ describe('canned', function () {
     })
   })
 
+  describe("variable GET responses based on params", function() {
+    var req, data
+    beforeEach(function() {
+      req = { method: 'GET' }
+    })
+
+    it("should select the right response based on the GET request data", function (done) {
+      req.url = "/multiple_get_responses?" + querystring.stringify({ foo: "bar" })
+      res.end = function (content) {
+        expect(content).toEqual(JSON.stringify({"response": "response for bar"}))
+        done()
+      }
+      can(req, res)
+    })
+
+    xit("should select the first response with no query string", function (done) {
+      req.url = "/multiple_get_responses"
+      res.end = function (content) {
+        expect(content).toEqual(JSON.stringify({"response": "response for baz"}))
+        done()
+      }
+      can(req, res)
+    })
+  })
+
   describe("variable POST responses", function() {
     var req, data
     beforeEach(function() {

spec/test_responses/_multiple_get_responses.get.json

@@ -0,0 +1,9 @@
+//! params: {"foo": "baz"}
+{
+    "response": "response for baz"
+}
+
+//! params: {"foo": "bar"}
+{
+    "response": "response for bar"
+}