mock responses

example/mock/.local-web-server.json

@@ -1,6 +1,7 @@
 {
   "rewrite": [
-    { "from": "/tree", "to": "/mocks/trees.mock.js" },
-    { "from": "/tree/:id", "to": "/mocks/tree.mock.js" }
+    { "from": "/trees", "to": "/mocks/trees.mock.js" },
+    { "from": "/trees/:id", "to": "/mocks/tree.mock.js" },
+    { "from": "/search", "to": "/mocks/search.mock.js" }
   ]
 }

example/mock/mocks/search.mock.js

@@ -0,0 +1,20 @@
+module.exports = [
+  {
+    request: {
+      accepts: 'json'
+    },
+    response: {
+      status: 200,
+      body: { id: 2, name: 'eucalyptus', maxHeight: 210 }
+    }
+  },
+  {
+    request: {
+      accepts: 'xml'
+    },
+    response: {
+      status: 200,
+      body: '<tree id="2" name="eucalyptus" maxHeight="210"/>'
+    }
+  }
+]

example/mock/mocks/tree.mock.js

@@ -1,8 +1,25 @@
 module.exports = [
+  /* CREATE (409 CONFLICT - should be called on the collection) */
   {
+    request: { method: 'POST' },
+    response: { status: 409 }
+  },
+  /* READ */
+  {
+    request: { method: 'GET' },
     response: {
       status: 200,
       body: { id: 2, name: 'eucalyptus', maxHeight: 210 }
     }
+  },
+  /* UPDATE */
+  {
+    request: { method: 'PUT' },
+    response: { status: 204 }
+  },
+  /* DELETE */
+  {
+    request: { method: 'DELETE' },
+    response: { status: 204 }
   }
 ]

example/mock/mocks/trees.mock.js

@@ -1,23 +1,38 @@
+const data = [
+  { id: 1, name: 'Conifer', maxHeight: 115 },
+  { id: 2, name: 'Eucalyptus', maxHeight: 210 },
+  { id: 3, name: 'Ash', maxHeight: 40 },
+  { id: 4, name: 'Elder', maxHeight: 5 },
+  { id: 5, name: 'Holly', maxHeight: 10 }
+]
+
 module.exports = [
+  /* CREATE */
   {
-    request: {
-      method: 'GET'
+    request: { method: 'POST' },
+    response: {
+      status: 201,
+      location: '/tree/1'
+    }
   },
+  /* READ */
+  {
+    request: { method: 'GET' },
     response: {
       status: 200,
-      body: [
-        { id: 1, name: 'conifer', maxHeight: 115 },
-        { id: 2, name: 'eucalyptus', maxHeight: 210 }
-      ]
+      body: function (ctx) {
+        return data.filter(tree => tree.maxHeight > Number(ctx.query.tallerThan))
+      }
     }
   },
+  /* UPDATE (forbidden on collection)*/
   {
-    request: {
-      method: 'POST'
+    request: { method: 'PUT' },
+    response: { status: 404 }
   },
-    response: {
-      status: 201,
-      location: '/tree/1'
-    }
+  /* DELETE (forbidden on collection) */
+  {
+    request: { method: 'DELETE' },
+    response: { status: 404 }
   }
 ]

lib/local-web-server.js

@@ -3,7 +3,7 @@ const path = require('path')
 const http = require('http')
 const url = require('url')
 const arrayify = require('array-back')
-let debug
+let debug, pathToRegexp
 
 /**
  * @module local-web-server
@@ -57,7 +57,7 @@ function localWebServer (options) {
   const convert = require('koa-convert')
   const cors = require('kcors')
   const _ = require('koa-route')
-  const pathToRegexp = require('path-to-regexp')
+  pathToRegexp = require('path-to-regexp')
   debug = require('debug')('local-web-server')
 
   const log = options.log
@@ -70,9 +70,6 @@ function localWebServer (options) {
   function verbose (category, message) {
     if (options.verbose) {
       debug(category, message)
-      // process.nextTick(() => {
-      //   app.emit('verbose', category, message)
-      // })
     }
   }
   app._verbose = verbose
@@ -93,8 +90,9 @@ function localWebServer (options) {
           app.use(_.all(route.from, proxyRequest(route, app)))
         } else {
           const rewrite = require('koa-rewrite')
-          verbose('local rewrite', `${route.from} -> ${route.to}`)
-          app.use(rewrite(route.from, route.to))
+          const mw = rewrite(route.from, route.to)
+          mw._name = 'rewrite'
+          app.use(mw)
         }
       }
     })
@@ -110,7 +108,6 @@ function localWebServer (options) {
   if (!options['no-cache']) {
     const conditional = require('koa-conditional-get')
     const etag = require('koa-etag')
-    // verbose('etag caching', 'enabled')
     app.use(conditional())
     app.use(etag())
   }
@@ -239,11 +236,39 @@ function mockResponses (options) {
   return function mockResponses (ctx, next) {
     if (/\.mock.js$/.test(ctx.path)) {
       const mocks = arrayify(require(path.join(options.root, ctx.path)))
-      const mock = mocks.find(mock => {
-        return !mock.request || mock.request.method === ctx.method
+      const testValue = require('test-value')
+      const t = require('typical')
+
+      /* find a mock with compatible method and accepts */
+      let mock = mocks.find(mock => {
+        return testValue(mock, {
+          request: {
+            method: [ ctx.method, undefined ],
+            accepts: type => ctx.accepts(type)
+          }
+        })
+      })
+
+      /* else take the first mock without a request (no request means 'all requests') */
+      if (!mock) {
+        mock = mocks.find(mock => !mock.request)
+      }
+
+      const mockedReponse = {}
+      /* resolve any functions on the mock */
+      Object.keys(mock.response).forEach(key => {
+        if (t.isFunction(mock.response[key])) {
+          mockedReponse[key] = mock.response[key](ctx)
+        } else {
+          mockedReponse[key] = mock.response[key]
+        }
       })
-      Object.assign(ctx.response, mock.response)
-      options.verbose('mock response', JSON.stringify(mock.response), JSON.stringify(ctx.response))
+
+      if (mock) {
+        Object.assign(ctx.response, mockedReponse)
+        options.verbose('mocked response', JSON.stringify(mockedReponse))
+        options.verbose('actual response', JSON.stringify(ctx.response))
+      }
     } else {
       return next()
     }

package.json

@@ -48,7 +48,9 @@
     "koa-static": "^1.5.2",
     "path-to-regexp": "^1.2.1",
     "stream-log-stats": "^v1.1.0-0",
-    "string-tools": "^1.0.0"
+    "string-tools": "^1.0.0",
+    "test-value": "^1.0.1",
+    "typical": "^2.4.0"
   },
   "devDependencies": {
     "req-then": "^0.2.2",