chore(dependencies): keep old behavior and stricten test case

lib/file-list.js

@@ -150,7 +150,7 @@ List.prototype._refresh = function () {
   var self = this
   var buckets = this.buckets
 
-  return Promise.map(this._patterns, function (patternObject) {
+  var promise = Promise.map(this._patterns, function (patternObject) {
     var pattern = patternObject.pattern
 
     if (helper.isUrlAbsolute(pattern)) {
@@ -167,7 +167,7 @@ List.prototype._refresh = function () {
       return
     }
 
-    return Promise.all(files.map(function (path) {
+    return Promise.map(files, function (path) {
       if (self._isExcluded(path)) {
         log.debug('Excluded file "%s"', path)
         return Promise.resolve()
@@ -185,7 +185,7 @@ List.prototype._refresh = function () {
       return self._preprocess(file).then(function () {
         return file
       })
-    }))
+    })
     .then(function (files) {
       files = _.compact(files)
 
@@ -197,10 +197,15 @@ List.prototype._refresh = function () {
     })
   })
   .then(function () {
+    if (self._refreshing !== promise) {
+      return self._refreshing
+    }
     self.buckets = buckets
     self._emitModified(true)
     return self.files
   })
+
+  return promise
 }
 
 // Public Interface

test/unit/file-list.spec.js

@@ -273,10 +273,20 @@ describe('FileList', () => {
 
       var p1 = list.refresh().then(checkResult)
       patternList['/some/*.js'].push('/some/c.js')
-      mg.statCache['/some/c.js'] = {mtime: new Date()}
+      mg.statCache['/some/c.js'] = {mtime: new Date(Date.now() + 5000)}
       var p2 = list.refresh().then(checkResult)
+      var called = false
+      var callback = (data) => {
+        expect(called).to.be.false
+        expect(data.served[0].mtime.toString()).to.not.equal(data.served[2].mtime.toString())
+        expect(data.served[0].mtime.toString()).to.equal(data.served[1].mtime.toString())
+        called = true
+      }
+      list._emitter.on('file_list_modified', callback)
 
-      return Promise.all([p1, p2])
+      return Promise.all([p1, p2]).then(() => {
+        list._emitter.removeListener('file_list_modified', callback)
+      })
     })
 
     it('sets the mtime for all files', () => {