add multi-thread command line

bin/viffs

@@ -0,0 +1,3 @@
+#!/usr/bin/env node
+
+require('../lib/viffs.js')

gruntfile.coffee

@@ -26,6 +26,7 @@ module.exports = (grunt) ->
           'lib/testcase.js': 'src/testcase.coffee',
           'lib/capability.js': 'src/capability.coffee',
           'lib/resemble.js': 'src/resemble.coffee',
+          'lib/viffs.js': 'src/viffs.coffee',
           'lib/canvas.drawimage.js': 'src/canvas.drawimage.coffee',
           'lib/image.dataurl.helper.js': 'src/image.dataurl.helper.coffee',
           'test/build/comparison_test.js': 'test/src/comparison_test.coffee',

src/index.coffee

@@ -13,20 +13,19 @@ return console.log config if _.isString config
 
 viff = new Viff config.seleniumHost
 
-if config.reportFormat == 'file'
-  consoleStatus viff
+consoleStatus viff
 
-  # clean the images and report.json
-  viff.on 'before', (cases) ->  imgGen.reset();
+# clean the images and report.json
+viff.on 'before', (cases) ->  imgGen.reset();
 
-  # generate images by each case
-  viff.on 'afterEach', (_case, duration) -> imgGen.generateByCase _case if duration != 0
+# generate images by each case
+viff.on 'afterEach', (_case, duration) -> imgGen.generateByCase _case if duration != 0
 
-  # generate report.json
-  viff.on 'after', (cases, duration) ->
-    imgGen.generateReport cases
-    resemble.exit()
-    partialCanvas.exit()
+# generate report.json
+viff.on 'after', (cases, duration) ->
+  imgGen.generateReport cases
+  resemble.exit()
+  partialCanvas.exit()
 
 cases = Viff.constructCases config.browsers, config.envHosts, config.paths
 viff.run cases

src/viff.coffee

@@ -64,6 +64,13 @@ class Viff extends EventEmitter
 
     cases
 
+  @split: (cases, count) ->
+    groups = []
+    groups.push [] while count--
+    groups[idx % groups.length].push _case for idx, _case of cases
+
+    groups
+
   run: (cases, callback) ->
     defer = Q.defer()
     defer.promise.done callback
@@ -72,14 +79,6 @@ class Viff extends EventEmitter
     @emit 'before', cases
     start = Date.now()
 
-    endQueue = (index) ->
-      if index == cases.length - 1
-        endTime = Date.now() - start
-        that.emit 'after', cases, endTime
-        defer.resolve [cases, endTime]
-
-        that.closeDrivers()
-
     async.eachSeries cases, (_case, next) ->
       startcase = Date.now()
       that.emit 'beforeEach', _case, 0

src/viffs.coffee

@@ -0,0 +1,32 @@
+_ = require 'underscore'
+
+Viff = require './viff.js'
+processArgs = require './process.argv.js'
+consoleStatus = require './console.status.js'
+imgGen = require './image.generator'
+resemble = require './resemble'
+partialCanvas = require './canvas.drawimage'
+
+config = processArgs process.argv
+
+return console.log config if _.isString config
+
+count = 3
+
+cases = Viff.constructCases config.browsers, config.envHosts, config.paths
+testGroups = Viff.split cases, count
+resolvedCases = []
+
+imgGen.reset();
+
+for group in testGroups
+  viff = new Viff config.seleniumHost
+  viff.on 'afterEach', (_case, duration) -> imgGen.generateByCase _case if duration != 0
+  consoleStatus viff
+
+  viff.run group, ([cases, endTime]) ->
+    resolvedCases = resolvedCases.concat cases
+    unless --count
+      imgGen.generateReport resolvedCases
+      resemble.exit()
+      partialCanvas.exit()

test/src/viff.spec.coffee

@@ -198,3 +198,9 @@ describe 'viff', ->
     cases = Viff.constructCases(browsers, @config.compare, @links)
     cases.length.should.equal 6
     _.first(cases).from.name.should.equal 'build'
+
+  it 'should split cases to groups according to amount of instances', () ->
+    cases = Viff.constructCases(@config.browsers, @config.compare, @links)
+    groups = Viff.split cases, 3
+    groups[0].length.should.equal 2
+    groups[1].length.should.equal 1