Add code to automatically svn cleanup during svn update.

tests/gclient_scm_test.py

Index: tests/gclient_scm_test.py
diff --git a/tests/gclient_scm_test.py b/tests/gclient_scm_test.py
index 4f971b2827eac31c6fe34bba025fa70ba9a5dceb..92ea2be91d819c403d2b425d28e15f135b269e47 100755
--- a/tests/gclient_scm_test.py
+++ b/tests/gclient_scm_test.py
@@ -255,6 +255,11 @@ class SVNWrapperTestCase(BaseTestCase):
     }
     gclient_scm.os.path.exists(gclient_scm.os.path.join(base_path, '.git')
                                ).AndReturn(False)
+
+    # Verify no locked files.
+    gclient_scm.scm.SVN.CaptureStatus(gclient_scm.os.path.join(base_path, '.')
+        ).AndReturn([])
+
     # Checkout or update.
     gclient_scm.os.path.exists(base_path).AndReturn(True)
     gclient_scm.scm.SVN.CaptureInfo(
@@ -295,6 +300,10 @@ class SVNWrapperTestCase(BaseTestCase):
     gclient_scm.os.path.exists(gclient_scm.os.path.join(base_path, 'DEPS')
         ).AndReturn(False)
 
+    # Verify no locked files.
+    gclient_scm.scm.SVN.CaptureStatus(gclient_scm.os.path.join(base_path, '.')
+        ).AndReturn([])
+
     # When checking out a single file, we issue an svn checkout and svn update.
     files_list = self.mox.CreateMockAnything()
     gclient_scm.scm.SVN.Run(
@@ -363,6 +372,10 @@ class SVNWrapperTestCase(BaseTestCase):
         ).AndReturn(True)
     gclient_scm.os.remove(gclient_scm.os.path.join(base_path, 'DEPS'))
 
+    # Verify no locked files.
+    gclient_scm.scm.SVN.CaptureStatus(gclient_scm.os.path.join(base_path, '.')
+        ).AndReturn([])
+
     # When checking out a single file, we issue an svn checkout and svn update.
     files_list = self.mox.CreateMockAnything()
     gclient_scm.scm.SVN.Run(
@@ -399,6 +412,10 @@ class SVNWrapperTestCase(BaseTestCase):
     gclient_scm.os.path.exists(gclient_scm.os.path.join(base_path, '.svn')
         ).AndReturn(True)
 
+    # Verify no locked files.
+    gclient_scm.scm.SVN.CaptureStatus(gclient_scm.os.path.join(base_path, '.')
+        ).AndReturn([])
+
     # Now we fall back on scm.update().
     files_list = self.mox.CreateMockAnything()
     gclient_scm.os.path.exists(gclient_scm.os.path.join(base_path, '.git')