[MERGE] per_repository/test_repository improvements (brisbane)

[John Arbash Meinel]

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Ian Clatworthy wrote:
> Testing tweaks from brisbane-core by Robert. I've reviewed
> them and they look fine to me. "bzr sefltest test_repository"
> passes with this patch so it can land into bzr.dev if approved.
> 
> Ian C.
> 



         tree = wt.branch.repository.revision_tree(NULL_REVISION)
- -        self.assertEqual([], list(tree.list_files(include_root=True)))
+        tree.lock_read()
+        try:
+            self.assertEqual([], list(tree.list_files(include_root=True)))
+        finally:
+            tree.unlock()

^- I do wish we had a better way of doing this that wasn't so verbose
all the time.

BB:approve

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