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From: Junio C Hamano <gitster@pobox.com>
To: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Cc: git@vger.kernel.org, Jeff King <peff@peff.net>,
	Bagas Sanjaya <bagasdotme@gmail.com>,
	Josh Steadmon <steadmon@google.com>
Subject: Re: [PATCH v6 1/6] object-name tests: add tests for ambiguous object blind spots
Date: Thu, 30 Dec 2021 15:36:42 -0800	[thread overview]
Message-ID: <xmqqv8z5mzqt.fsf@gitster.g> (raw)
In-Reply-To: patch-v6-1.6-27f267ad555-20211228T143223Z-avarab@gmail.com

Ævar Arnfjörð Bjarmason  <avarab@gmail.com> writes:

> +test_cmp_failed_rev_parse () {
> +	dir=$1
> +	rev=$2
> +	shift

What are we shifting away?

> +	test_must_fail git -C "$dir" rev-parse "$rev" 2>actual.raw &&
> +	sed "s/\($rev\)[0-9a-f]*/\1.../g" <actual.raw >actual &&

I wonder if we need to ensure not to mistakenly produce second hit
in an object name that has $rev twice, e.g. "cafe123cafe..."?

> +	test_cmp expect actual
> +}

It is a bit confusing to _depend_ on the caller to prepare a
fixed-name file, like this.  We've avoided such confusion in
different ways in other tests, like (A) make the helper take
the expected output from its standard input, or (B) make the
helper take the name of the file that has expected output as
its argument.

> +test_expect_success 'ambiguous blob output' '
> +	git init --bare blob.prefix &&
> +	(
> +		cd blob.prefix &&
> +
> +		# Both start with "dead..", under both SHA-1 and SHA-256
> +		echo brocdnra | git hash-object -w --stdin &&
> +		echo brigddsv | git hash-object -w --stdin &&
> +
> +		# Both start with "beef.."
> +		echo 1agllotbh | git hash-object -w --stdin &&
> +		echo 1bbfctrkc | git hash-object -w --stdin
> +	) &&
> +
> +	test_must_fail git -C blob.prefix rev-parse dead &&
> +	cat >expect <<-\EOF &&
> +	error: short object ID beef... is ambiguous
> +	hint: The candidates are:
> +	hint:   beef... blob
> +	hint:   beef... blob
> +	fatal: ambiguous argument '\''beef...'\'': unknown revision or path not in the working tree.
> +	Use '\''--'\'' to separate paths from revisions, like this:
> +	'\''git <command> [<revision>...] -- [<file>...]'\''
> +	EOF
> +	test_cmp_failed_rev_parse blob.prefix beef
> +'
> +
> +test_expect_success 'ambiguous loose blob parsed as OBJ_BAD' '

"loose bad object", as they aren't even blobs, perhaps?

> +	git init --bare blob.bad &&
> +	(
> +		cd blob.bad &&
> +
> +		# Both have the prefix "bad0"
> +		echo xyzfaowcoh | git hash-object -t bad -w --stdin --literally &&
> +		echo xyzhjpyvwl | git hash-object -t bad -w --stdin --literally
> +	) &&
> +
> +	cat >expect <<-\EOF &&
> +	error: short object ID bad0... is ambiguous
> +	hint: The candidates are:
> +	fatal: invalid object type

That indeed is not very nice.

> +	EOF
> +	test_cmp_failed_rev_parse blob.bad bad0
> +'
> +
> +test_expect_success POSIXPERM 'ambigous zlib corrupt loose blob' '
> +	git init --bare blob.corrupt &&
> +	(
> +		cd blob.corrupt &&
> +
> +		# Both have the prefix "cafe"
> +		echo bnkxmdwz | git hash-object -w --stdin &&
> +		oid=$(echo bmwsjxzi | git hash-object -w --stdin) &&
> +
> +		oidf=objects/$(test_oid_to_path "$oid") &&
> +		chmod 755 $oidf &&
> +		echo broken >$oidf
> +	) &&
> +
> +	cat >expect <<-\EOF &&
> +	error: short object ID cafe... is ambiguous
> +	hint: The candidates are:
> +	error: inflate: data stream error (incorrect header check)
> +	error: unable to unpack cafe... header
> +	error: inflate: data stream error (incorrect header check)
> +	error: unable to unpack cafe... header
> +	hint:   cafe... unknown type
> +	hint:   cafe... blob

This is an interesting one.  I _think_ it is clear enough for the
readers that the inflate errors are for the object that immediately
follows them, so as long as we show these hints one by one, the
above output is perfectly fine.  But we'll see.

> +	fatal: ambiguous argument '\''cafe...'\'': unknown revision or path not in the working tree.
> +	Use '\''--'\'' to separate paths from revisions, like this:
> +	'\''git <command> [<revision>...] -- [<file>...]'\''
> +	EOF
> +	test_cmp_failed_rev_parse blob.corrupt cafe
> +'
> +
>  if ! test_have_prereq SHA1
>  then
>  	skip_all='not using SHA-1 for objects'

  reply	other threads:[~2021-12-30 23:36 UTC|newest]

Thread overview: 90+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-04  1:42 [PATCH 0/2] i18n: improve translatability of ambiguous object output Ævar Arnfjörð Bjarmason
2021-10-04  1:42 ` [PATCH 1/2] object-name tests: tighten up advise() output test Ævar Arnfjörð Bjarmason
2021-10-04  2:52   ` Eric Sunshine
2021-10-04  7:05   ` Jeff King
2021-10-04  1:42 ` [PATCH 2/2] object-name: make ambiguous object output translatable Ævar Arnfjörð Bjarmason
2021-10-04  7:35   ` Jeff King
2021-10-04  8:26     ` Ævar Arnfjörð Bjarmason
2021-10-04  9:29       ` Jeff King
2021-10-04 11:16         ` Ævar Arnfjörð Bjarmason
2021-10-04 12:07           ` Jeff King
2021-10-04 14:27 ` [PATCH v2 0/2] i18n: improve translatability of ambiguous object output Ævar Arnfjörð Bjarmason
2021-10-04 14:27   ` [PATCH v2 1/2] object.[ch]: mark object type names for translation Ævar Arnfjörð Bjarmason
2021-10-04 18:54     ` Eric Sunshine
2021-10-05  9:37     ` Bagas Sanjaya
2021-10-05 15:52       ` Ævar Arnfjörð Bjarmason
2021-10-06 19:05     ` Jeff King
2021-10-06 19:46       ` Junio C Hamano
2021-10-06 20:38         ` Jeff King
2021-10-07 18:06           ` Junio C Hamano
2021-10-04 14:27   ` [PATCH v2 2/2] object-name: make ambiguous object output translatable Ævar Arnfjörð Bjarmason
2021-10-06 19:11     ` Jeff King
2021-10-08 19:34   ` [PATCH v3 0/3] i18n: improve translatability of ambiguous object output Ævar Arnfjörð Bjarmason
2021-10-08 19:34     ` [PATCH v3 1/3] object-name: remove unreachable "unknown type" handling Ævar Arnfjörð Bjarmason
2021-10-08 19:34     ` [PATCH v3 2/3] object-name: make ambiguous object output translatable Ævar Arnfjörð Bjarmason
2021-10-08 19:34     ` [PATCH v3 3/3] object-name: show date for ambiguous tag objects Ævar Arnfjörð Bjarmason
2021-11-22 17:53     ` [PATCH v2 0/3] object-name: make ambiguous object output translatable + show tag date Ævar Arnfjörð Bjarmason
2021-11-22 17:53       ` [PATCH v4 1/3] object-name: remove unreachable "unknown type" handling Ævar Arnfjörð Bjarmason
2021-11-22 22:37         ` Jeff King
2021-11-22 17:53       ` [PATCH v4 2/3] object-name: make ambiguous object output translatable Ævar Arnfjörð Bjarmason
2021-11-22 17:53       ` [PATCH v4 3/3] object-name: show date for ambiguous tag objects Ævar Arnfjörð Bjarmason
2021-11-25 22:03       ` [PATCH v5 0/6] object-name: make ambiguous object output translatable + show tag date Ævar Arnfjörð Bjarmason
2021-11-25 22:03         ` [PATCH v5 1/6] object-name tests: add tests for ambiguous object blind spots Ævar Arnfjörð Bjarmason
2021-12-23 21:51           ` Josh Steadmon
2021-11-25 22:03         ` [PATCH v5 2/6] object-name: explicitly handle OBJ_BAD in show_ambiguous_object() Ævar Arnfjörð Bjarmason
2021-12-23 21:51           ` Josh Steadmon
2021-12-23 22:42           ` Junio C Hamano
2021-11-25 22:03         ` [PATCH v5 3/6] object-name: make ambiguous object output translatable Ævar Arnfjörð Bjarmason
2021-12-23 21:54           ` [PATCH] fixup! " Josh Steadmon
2021-12-23 22:48             ` Junio C Hamano
2021-11-25 22:03         ` [PATCH v5 4/6] object-name: show date for ambiguous tag objects Ævar Arnfjörð Bjarmason
2021-11-25 22:03         ` [PATCH v5 5/6] object-name: iterate ambiguous objects before showing header Ævar Arnfjörð Bjarmason
2021-11-25 22:03         ` [PATCH v5 6/6] object-name: re-use "struct strbuf" in show_ambiguous_object() Ævar Arnfjörð Bjarmason
2021-12-28 14:34         ` [PATCH v6 0/6] object-name: make ambiguous object output translatable + show tag date Ævar Arnfjörð Bjarmason
2021-12-28 14:34           ` [PATCH v6 1/6] object-name tests: add tests for ambiguous object blind spots Ævar Arnfjörð Bjarmason
2021-12-30 23:36             ` Junio C Hamano [this message]
2021-12-28 14:34           ` [PATCH v6 2/6] object-name: explicitly handle OBJ_BAD in show_ambiguous_object() Ævar Arnfjörð Bjarmason
2021-12-28 14:34           ` [PATCH v6 3/6] object-name: make ambiguous object output translatable Ævar Arnfjörð Bjarmason
2021-12-30 23:46             ` Junio C Hamano
2021-12-28 14:35           ` [PATCH v6 4/6] object-name: show date for ambiguous tag objects Ævar Arnfjörð Bjarmason
2021-12-30 21:43             ` Junio C Hamano
2021-12-28 14:35           ` [PATCH v6 5/6] object-name: iterate ambiguous objects before showing header Ævar Arnfjörð Bjarmason
2021-12-28 14:35           ` [PATCH v6 6/6] object-name: re-use "struct strbuf" in show_ambiguous_object() Ævar Arnfjörð Bjarmason
2021-12-28 15:18           ` [PATCH v8 0/7] progress: test fixes / cleanup Ævar Arnfjörð Bjarmason
2021-12-28 15:18             ` [PATCH v8 1/7] leak tests: fix a memory leak in "test-progress" helper Ævar Arnfjörð Bjarmason
2021-12-28 15:18             ` [PATCH v8 2/7] progress.c test helper: add missing braces Ævar Arnfjörð Bjarmason
2021-12-28 15:18             ` [PATCH v8 3/7] progress.c tests: make start/stop commands on stdin Ævar Arnfjörð Bjarmason
2021-12-28 16:25               ` Johannes Altmanninger
2021-12-28 15:19             ` [PATCH v8 4/7] progress.c tests: test some invalid usage Ævar Arnfjörð Bjarmason
2021-12-28 16:33               ` Johannes Altmanninger
2021-12-28 15:19             ` [PATCH v8 5/7] progress.c: add temporary variable from progress struct Ævar Arnfjörð Bjarmason
2021-12-28 16:05               ` René Scharfe
2021-12-28 16:13               ` Johannes Altmanninger
2021-12-28 15:19             ` [PATCH v8 6/7] pack-bitmap-write.c: don't return without stop_progress() Ævar Arnfjörð Bjarmason
2021-12-28 15:19             ` [PATCH v8 7/7] *.c: use isatty(0|2), not isatty(STDIN_FILENO|STDERR_FILENO) Ævar Arnfjörð Bjarmason
2021-12-28 16:47               ` René Scharfe
2021-12-28 23:56                 ` Ævar Arnfjörð Bjarmason
2022-01-08  0:45             ` [PATCH v8 0/7] progress: test fixes / cleanup Junio C Hamano
2022-01-12 12:39           ` [PATCH v7 0/6] object-name: make ambiguous object output translatable + show tag date Ævar Arnfjörð Bjarmason
2022-01-12 12:39             ` [PATCH v7 1/6] object-name tests: add tests for ambiguous object blind spots Ævar Arnfjörð Bjarmason
2022-01-13 22:39               ` Junio C Hamano
2022-01-14 12:07                 ` Ævar Arnfjörð Bjarmason
2022-01-14 18:45                   ` Junio C Hamano
2022-01-12 12:39             ` [PATCH v7 2/6] object-name: explicitly handle OBJ_BAD in show_ambiguous_object() Ævar Arnfjörð Bjarmason
2022-01-12 12:39             ` [PATCH v7 3/6] object-name: make ambiguous object output translatable Ævar Arnfjörð Bjarmason
2022-01-12 12:39             ` [PATCH v7 4/6] object-name: show date for ambiguous tag objects Ævar Arnfjörð Bjarmason
2022-01-13 22:46               ` Junio C Hamano
2022-01-14 12:05                 ` Ævar Arnfjörð Bjarmason
2022-01-14 19:04                   ` Junio C Hamano
2022-01-14 19:35                     ` Ævar Arnfjörð Bjarmason
2022-01-12 12:39             ` [PATCH v7 5/6] object-name: iterate ambiguous objects before showing header Ævar Arnfjörð Bjarmason
2022-01-12 12:39             ` [PATCH v7 6/6] object-name: re-use "struct strbuf" in show_ambiguous_object() Ævar Arnfjörð Bjarmason
2022-01-27  5:26             ` [PATCH v8 0/7] object-name: make ambiguous object output translatable + show tag date Ævar Arnfjörð Bjarmason
2022-01-27  5:26               ` [PATCH v8 1/7] object-name tests: add tests for ambiguous object blind spots Ævar Arnfjörð Bjarmason
2022-01-27  5:26               ` [PATCH v8 2/7] object-name: explicitly handle OBJ_BAD in show_ambiguous_object() Ævar Arnfjörð Bjarmason
2022-01-27  5:26               ` [PATCH v8 3/7] object-name: explicitly handle bad tags " Ævar Arnfjörð Bjarmason
2022-01-27  5:26               ` [PATCH v8 4/7] object-name: make ambiguous object output translatable Ævar Arnfjörð Bjarmason
2022-01-27  5:26               ` [PATCH v8 5/7] object-name: show date for ambiguous tag objects Ævar Arnfjörð Bjarmason
2022-01-27  5:26               ` [PATCH v8 6/7] object-name: iterate ambiguous objects before showing header Ævar Arnfjörð Bjarmason
2022-01-27  5:26               ` [PATCH v8 7/7] object-name: re-use "struct strbuf" in show_ambiguous_object() Ævar Arnfjörð Bjarmason
2022-01-27 20:14               ` [PATCH v8 0/7] object-name: make ambiguous object output translatable + show tag date Junio C Hamano

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