Allow PRESUBMIT.py to handle deleted files.

PRESUBMIT_unittest.py

Index: PRESUBMIT_unittest.py
===================================================================
--- PRESUBMIT_unittest.py	(revision 11452)
+++ PRESUBMIT_unittest.py	(working copy)
@@ -19,17 +19,24 @@
     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
 
@@ -82,6 +89,14 @@
     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()