Allow PRESUBMIT.py to handle deleted files.

PRESUBMIT_unittest.py

 #!/usr/bin/python
 # Copyright (c) 2009 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.
 
 """Unit tests for top-level Chromium presubmit script.
 """
 
 
 import os
 import PRESUBMIT
 import re
 import unittest
 
 
 class MockInputApi(object):
   def __init__(self):
     self.affected_files = []
     self.re = re
     self.os_path = os.path
 
-  def AffectedFiles(self):
-    return self.affected_files
+  def AffectedFiles(self, include_deletes=True):
+    if include_deletes:
+      return self.affected_files
+    else:
+      return filter(lambda x: x.Action() != 'D', self.affected_files)
 
   def AffectedTextFiles(self, include_deletes=True):
     return self.affected_files
 
 
 class MockAffectedFile(object):
-  def __init__(self, path):
+  def __init__(self, path, action='A'):
     self.path = path
+    self.action = action
+
+  def Action(self):
+    return self.action
 
   def LocalPath(self):
     return self.path
 
 
 class MockOutputApi(object):
   class PresubmitError(object):
     def __init__(self, msg, items=[], long_text=''):
       self.msg = msg
       self.items = items
@@ skipping 33 matching lines @@
     self.failUnless(
       len(PRESUBMIT.LocalChecks(api, MockOutputApi)[0].items) == 3)
 
     self.file_contents = 'both\ttabs and\r\nCRLF\n'
     # 3 source files, 1 error by file + 1 global CR error.
     self.failUnless(len(PRESUBMIT.LocalChecks(api, MockOutputApi)) == 4)
 
     self.file_contents = 'file with\nzero \\t errors \\r\\n\n'
     self.failIf(PRESUBMIT.LocalChecks(api, MockOutputApi))
 
+  def testLocalChecksDeletedFile(self):
+    api = MockInputApi()
+    api.affected_files = [
+      MockAffectedFile('foo/blat/source.py', 'D'),
+    ]
+    self.file_contents = 'file with \n\terror\nhere\r\nyes there'
+    self.failUnless(len(PRESUBMIT.LocalChecks(api, MockOutputApi)) == 0)
+
 
 if __name__ == '__main__':
   unittest.main()