From 48b81aa323faf0904897dfeb875a3f9b6ff505ad Mon Sep 17 00:00:00 2001
From: Nathan Black <nathan@nathanblack.org>
Date: Tue, 13 Jan 2015 17:36:42 -0800
Subject: [PATCH] Implement the grep option, -g, and -i for inverting it. Fixes
 #145

---
 bin/mocha-phantomjs         |  4 ++++
 lib/mocha-phantomjs.coffee  |  9 +++++++--
 test/mocha-phantomjs.coffee | 12 ++++++++++++
 3 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/bin/mocha-phantomjs b/bin/mocha-phantomjs
index 11b543b..a549996 100755
--- a/bin/mocha-phantomjs
+++ b/bin/mocha-phantomjs
@@ -63,6 +63,8 @@ program
   .option('-R, --reporter <name>',       'specify the reporter to use', 'spec')
   .option('-f, --file <filename>',       'specify the file to dump reporter output')
   .option('-t, --timeout <timeout>',     'specify the test startup timeout to use', parseInt, 6000)
+  .option('-g, --grep <pattern>',        'only run tests matching <pattern>')
+  .option('-i, --invert',                'invert --grep matches')
   .option('-b, --bail',                  'exit on the first test failure')
   .option('-A, --agent <userAgent>',     'specify the user agent to use')
   .option('-c, --cookies <Object>',      'phantomjs cookie object http://git.io/RmPxgA', cookiesParser) // http://git.io/RmPxgA
@@ -109,6 +111,8 @@ var config = JSON.stringify({
   useColors: program.color,
   bail: program.bail,
   file: program.file,
+  grep: program.grep,
+  invert: program.invert,
   ignoreResourceErrors: program.ignoreResourceErrors
 });
 
diff --git a/lib/mocha-phantomjs.coffee b/lib/mocha-phantomjs.coffee
index cf9a311..ed90db2 100644
--- a/lib/mocha-phantomjs.coffee
+++ b/lib/mocha-phantomjs.coffee
@@ -93,8 +93,13 @@ class Reporter
       false
 
   runMocha: ->
-    if @config.useColors is false then @page.evaluate -> mocha.useColors false
-    if @config.bail then @page.evaluate -> mocha.bail true
+    @page.evaluate (config) ->
+      mocha.useColors config.useColors
+      mocha.bail config.bail
+      mocha.grep config.grep if config.grep
+      mocha.invert() if config.invert
+    , @config
+
     @config.hooks.beforeStart?(this)
 
     unless @page.evaluate(@setupReporter, @reporter) is true
diff --git a/test/mocha-phantomjs.coffee b/test/mocha-phantomjs.coffee
index 627c011..033a198 100644
--- a/test/mocha-phantomjs.coffee
+++ b/test/mocha-phantomjs.coffee
@@ -353,6 +353,18 @@ describe 'mocha-phantomjs', ->
         @runner done, ['-v', '123x456', fileURL('viewport')], (code, stdout, stderr) ->
           expect(stdout).to.match /123x456/
 
+    describe 'grep', ->
+
+      it 'filters tests to match the criteria', (done) ->
+        @runner done, ['-g', 'pass', fileURL('mixed')], (code, stdout, stderr) ->
+          expect(code).to.equal 0
+          expect(stdout).to.not.match /fail/
+
+      it 'can be inverted to filter out tests matching the criteria', (done) ->
+        @runner done, ['-g', 'pass', '-i', fileURL('mixed')], (code, stdout, stderr) ->
+          expect(code).to.equal 6
+          expect(stdout).to.not.match /passes/
+
     describe 'no-colors', ->
 
       it 'suppresses color output', (done) ->