diff -r 5e025dc7d728 Lib/test/test_webbrowser.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Lib/test/test_webbrowser.py	Sun Aug 12 21:57:59 2012 +0300
@@ -0,0 +1,118 @@
+import webbrowser
+import subprocess
+import unittest
+from unittest import mock
+
+
+class PopenMock(mock.MagicMock):
+
+    def poll(self):
+        return 0
+
+    def wait(self, seconds=None):
+        return 0
+
+
+@mock.patch('subprocess.Popen', new_callable=PopenMock)
+class CommandTest(unittest.TestCase):
+
+    URL = 'http://www.example.com/'
+    NAME = 'test'
+
+    @property
+    def cmd_line(self):
+        return subprocess.Popen.call_args[0][0]
+
+    def process_args(func):
+        def wrapper(self, browser_class, browser_args, *args, **kwargs):
+            # create an instance of the browser, insert the test url
+            # and the test browser name
+            browser = browser_class(name=self.NAME)
+            browser_args = [self.NAME] + \
+                    [arg.format(url=self.URL) for arg in browser_args]
+            func(self, browser, browser_args, *args, **kwargs)
+        return wrapper
+
+    @process_args
+    def check_open(self, browser, args, autoraise=True):
+        browser.open(self.URL, autoraise=autoraise)
+        self.assertEqual(self.cmd_line, args)
+
+    @process_args
+    def check_open_new(self, browser, args):
+        browser.open_new(self.URL)
+        self.assertEqual(self.cmd_line, args)
+
+    @process_args
+    def check_open_new_tab(self, browser, args):
+        browser.open_new_tab(self.URL)
+        self.assertEqual(self.cmd_line, args)
+
+    def test_generic(self, popen):
+        args = ['{url}']
+        self.check_open(webbrowser.GenericBrowser, args)
+
+    def test_background(self, popen):
+        args = ['{url}']
+        self.check_open(webbrowser.BackgroundBrowser, args)
+
+    def test_chrome(self, popen):
+        args = ['{url}']
+        self.check_open(webbrowser.Chrome, args)
+        self.check_open(webbrowser.Chrome, args, autoraise=False)
+        self.check_open_new_tab(webbrowser.Chrome, args)
+
+        new_args = ['--new-window', '{url}']
+        self.check_open_new(webbrowser.Chrome, new_args)
+
+    def test_mozilla(self, popen):
+        args = ['-raise', '-remote', 'openURL({url})']
+        self.check_open(webbrowser.Mozilla, args)
+
+        noraise_args = ['-noraise', '-remote', 'openURL({url})']
+        self.check_open(webbrowser.Mozilla, noraise_args, autoraise=False)
+
+        tab_args = ['-raise', '-remote', 'openURL({url},new-tab)']
+        self.check_open_new_tab(webbrowser.Mozilla, tab_args)
+
+        new_args = ['-raise', '-remote', 'openURL({url},new-window)']
+        self.check_open_new(webbrowser.Mozilla, new_args)
+
+    def test_galeon(self, popen):
+        args = ['-n', '{url}']
+        self.check_open(webbrowser.Galeon, args)
+
+        noraise_args = ['-noraise', '-n', '{url}']
+        self.check_open(webbrowser.Galeon, noraise_args, autoraise=False)
+
+        tab_args = ['-w', '{url}']
+        self.check_open_new_tab(webbrowser.Galeon, tab_args)
+        self.check_open_new(webbrowser.Galeon, tab_args)
+
+    def test_opera(self, popen):
+        args = ['-remote', 'openURL({url})']
+        self.check_open(webbrowser.Opera, args)
+
+        noraise_args = ['-noraise', '-remote', 'openURL({url})']
+        self.check_open(webbrowser.Opera, noraise_args, autoraise=False)
+
+        tab_args = ['-remote', 'openURL({url},new-page)']
+        self.check_open_new_tab(webbrowser.Opera, tab_args)
+
+        new_args = ['-remote', 'openURL({url},new-window)']
+        self.check_open_new(webbrowser.Opera, new_args)
+
+    def test_elinks(self, popen):
+        args = ['-remote', 'openURL({url})']
+        self.check_open(webbrowser.Elinks, args)
+        self.check_open(webbrowser.Elinks, args, autoraise=False)
+
+        tab_args = ['-remote', 'openURL({url},new-tab)']
+        self.check_open_new_tab(webbrowser.Elinks, tab_args)
+
+        new_args = ['-remote', 'openURL({url},new-window)']
+        self.check_open_new(webbrowser.Elinks, new_args)
+
+
+if __name__ == '__main__':
+    unittest.main()