Thread (232 messages) flat view 232 messages, 10 authors, 2021-11-11

Re: [PATCH v6 05/22] rev-list tests: test for behavior with invalid object types

From: Taylor Blau <hidden>
Date: 2021-09-16 20:40:45

On Tue, Sep 07, 2021 at 12:58:00PM +0200, Ævar Arnfjörð Bjarmason wrote:
Fix a blindspot in the tests for the "rev-list --disk-usage" feature
added in 16950f8384a (rev-list: add --disk-usage option for
calculating disk usage, 2021-02-09) to test for what happens when it's
asked to calculate the disk usage of invalid object types.
I'm not sure that I agree this is a blindspot, or at least one worth
testing. Is the goal to add tests to every Git command that might have
to do something with a corrupt object and make sure that it is handled
correctly?

I'm not sure that doing so would be useful, or at the very least that it
would be worth the effort. That's not to say I'm not interested in
having tests fail when we don't handle corrupt objects correctly, but
more to say that I think there are so many parts of Git that might touch
a corrupt object that trying to test all of them seems like a losing
battle.

Assuming that this is a useful direction, though...
quoted hunk ↗ jump to hunk
Signed-off-by: Ævar Arnfjörð Bjarmason <redacted>
---
 t/t6115-rev-list-du.sh | 11 +++++++++++
 1 file changed, 11 insertions(+)
diff --git a/t/t6115-rev-list-du.sh b/t/t6115-rev-list-du.sh
index b4aef32b713..edb2ed55846 100755
--- a/t/t6115-rev-list-du.sh
+++ b/t/t6115-rev-list-du.sh
@@ -48,4 +48,15 @@ check_du HEAD
 check_du --objects HEAD
 check_du --objects HEAD^..HEAD

+test_expect_success 'setup garbage repository' '
+	git clone --bare . garbage.git &&
Since this is cloned within the working directory, should we bother to
clean this up to avoid munging with future tests?
+	garbage_oid=$(git -C garbage.git hash-object -t garbage -w --stdin --literally <one.t) &&
+	git -C garbage.git rev-list --objects --all --disk-usage &&
+
+	# Manually create a ref because "update-ref", "tag" etc. have
+	# no corresponding --literally option.
+	echo $garbage_oid >garbage.git/refs/tags/garbage-tag &&
+	test_must_fail git -C garbage.git rev-list --objects --all --disk-usage
See also my earlier comment about this being much more readable in a
sub-shell.

Thanks,
Taylor
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