update_engine: Fake out GatherExtents in all tests.
DeltaDiffGenerator tests don't mock out GatherExtents(), requiring them
to run as root for no good reason.
This patch cleans up the test initialization and tear down to fake out
the GatherExtents() function making it return a fixed list of extents.
The extents are now generated based on the size of the files used during
the test instead of the actual positions of the temporary files in the
host filesystem.
BUG=chromium:351589
TEST=FEATURES=test emerge-link update_engine
Change-Id: I43d184722aa0d6b847977c3902330f0963232cc3
Reviewed-on: https://chromium-review.googlesource.com/262306
Trybot-Ready: Alex Deymo <deymo@chromium.org>
Tested-by: Alex Deymo <deymo@chromium.org>
Reviewed-by: Allie Wood <alliewood@chromium.org>
Reviewed-by: Don Garrett <dgarrett@chromium.org>
Commit-Queue: Alex Deymo <deymo@chromium.org>
1 file changed