Add a new 'format-webkitpy' command that will reformat code to the style guide.

Tools/Scripts/webkitpy/formatter/main_unittest.py

+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import StringIO
+import unittest
+
+from webkitpy.common.system.systemhost_mock import MockSystemHost
+from webkitpy.formatter.main import main
+
+
+ACTUAL_INPUT = '''
+def foo():
+    """triple-quoted docstring"""
+    try:
+        bar = "bar"
+        long_list = ['this is a list of strings that should be wrapped', "and consistently quoted"]
+        longer_list = ['this is a list of strings that should be wrapped', "and consistently quoted", "because it's important to test quoting"]
+    except Exception, e:
+        pass
+'''
+
+
+EXPECTED_BLINK_OUTPUT = '''
+def foo():
+    """triple-quoted docstring"""
+    try:
+        bar = 'bar'
+        long_list = ['this is a list of strings that should be wrapped', 'and consistently quoted']
+        longer_list = [
+            'this is a list of strings that should be wrapped',
+            'and consistently quoted',
+            "because it's important to test quoting"]
+    except Exception as e:
+        pass
+'''
+
+
+EXPECTED_CHROMIUM_OUTPUT = '''
+def foo():
+  """triple-quoted docstring"""
+  try:
+    bar = "bar"
+    long_list = [
+        "this is a list of strings that should be wrapped",
+        "and consistently quoted"]
+    longer_list = [
+        "this is a list of strings that should be wrapped",
+        "and consistently quoted",
+        "because it's important to test quoting"]
+  except Exception as e:
+    pass
+'''
+
+
+class TestMain(unittest.TestCase):
+    maxDiff = 4096
+
+    def test_stdin_blink(self):
+        host = MockSystemHost()
+        host.stdin = StringIO.StringIO(ACTUAL_INPUT)
+        main(host, ['-'])
+        self.assertMultiLineEqual(host.stdout.getvalue(), EXPECTED_BLINK_OUTPUT)
+
+    def test_stdin_chromium(self):
+        host = MockSystemHost()
+        host.stdin = StringIO.StringIO(ACTUAL_INPUT)
+        main(host, ['--chromium', '-'])
+        self.assertMultiLineEqual(host.stdout.getvalue(), EXPECTED_CHROMIUM_OUTPUT)
+
+    def test_files_blink(self):
+        host = MockSystemHost()
+        host.filesystem.files = {
+            'test.py': ACTUAL_INPUT}
+        main(host, ['test.py'])
+        self.assertEqual(host.filesystem.files, {
+            'test.py': EXPECTED_BLINK_OUTPUT,
+            'test.py.bak': ACTUAL_INPUT})
+
+    def test_files_blink_no_backup(self):
+        host = MockSystemHost()
+        host.filesystem.files = {
+            'test.py': ACTUAL_INPUT}
+        main(host, ['--no-backups', 'test.py'])
+        self.assertEqual(host.filesystem.files, {
+            'test.py': EXPECTED_BLINK_OUTPUT})