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From: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
To: git@vger.kernel.org
Cc: "Junio C Hamano" <gitster@pobox.com>,
	dstolee@microsoft.com, git@jeffhostetler.com, peff@peff.net,
	johannes.schindelin@gmx.de, jrnieder@gmail.com,
	"Linus Torvalds" <torvalds@linux-foundation.org>,
	"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Subject: [PATCH 04/20] abbrev tests: add tests for core.abbrev and --abbrev
Date: Fri,  8 Jun 2018 22:41:20 +0000	[thread overview]
Message-ID: <20180608224136.20220-5-avarab@gmail.com> (raw)
In-Reply-To: <20180608224136.20220-1-avarab@gmail.com>

How hashes are abbreviated is a core feature of git, and should have
its own t0*.sh tests. There's a few tests for core.abbrev and --abbrev
already, but none of those stress the feature itself and its edge
cases much. We should have tests for those in one place.

I don't like some of this behavior of --abbrev being looser about
input values that core.abbrev, But let's start by asserting the
current behavior we have before we change any of it.

That difference in behavior wasn't intentional. The code that does the
command-line parsing was initially added in 0ce865b134 ("Add shortcuts
for very often used options.", 2007-10-14), and it wasn't until much
later in dce9648916 ("Make the default abbrev length configurable",
2010-10-28) when core.abbrev was added with stricter parsing.

That's also only most of the command-line parsing. The diff and log
family of commands have their own parsing for it in diff.c and
revision.c, respectively. Those were added earlier in
47dd0d595d ("diff: --abbrev option", 2005-12-13) and 508d9e372e ("Fix
"--abbrev=xyz" for revision listing", 2006-05-27), although note that
sometimes diff goes via the revision.c path.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 t/t0014-abbrev.sh | 118 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100755 t/t0014-abbrev.sh

diff --git a/t/t0014-abbrev.sh b/t/t0014-abbrev.sh
new file mode 100755
index 0000000000..1c60f5ff93
--- /dev/null
+++ b/t/t0014-abbrev.sh
@@ -0,0 +1,118 @@
+#!/bin/sh
+
+test_description='test core.abbrev and related features'
+
+. ./test-lib.sh
+
+tr_d_n() {
+	tr -d '\n'
+}
+
+cut_tr_d_n_field_n() {
+	cut -d " " -f $1 | tr_d_n
+}
+
+test_expect_success 'setup' '
+	test_commit A &&
+	git tag -a -mannotated A.annotated &&
+	test_commit B &&
+	test_commit C &&
+	mkdir X Y &&
+	touch X/file1 Y/file2
+'
+
+test_expect_success 'the FALLBACK_DEFAULT_ABBREV is 7' '
+	git log -1 --pretty=format:%h >log &&
+	test_byte_count = 7 log
+'
+
+test_expect_success 'abbrev empty value handling differs ' '
+	test_must_fail git -c core.abbrev= log -1 --pretty=format:%h 2>stderr &&
+	test_i18ngrep "bad numeric config value.*invalid unit" stderr &&
+
+	git branch -v --abbrev= | cut_tr_d_n_field_n 3 >branch &&
+	test_byte_count = 40 branch &&
+
+	git log --abbrev= -1 --pretty=format:%h >log &&
+	test_byte_count = 4 log &&
+
+	git diff --raw --abbrev= HEAD~ >diff &&
+	cut_tr_d_n_field_n 3 <diff >diff.3 &&
+	test_byte_count = 4 diff.3 &&
+	cut_tr_d_n_field_n 4 <diff >diff.4 &&
+	test_byte_count = 4 diff.4 &&
+
+	test_must_fail git diff --raw --abbrev= --no-index X Y >diff &&
+	cut_tr_d_n_field_n 3 <diff >diff.3 &&
+	test_byte_count = 4 diff.3 &&
+	cut_tr_d_n_field_n 4 <diff >diff.4 &&
+	test_byte_count = 4 diff.4
+'
+
+test_expect_success 'abbrev non-integer value handling differs ' '
+	test_must_fail git -c core.abbrev=XYZ log -1 --pretty=format:%h 2>stderr &&
+	test_i18ngrep "bad numeric config value.*invalid unit" stderr &&
+
+	test_must_fail git branch -v --abbrev=XYZ 2>stderr &&
+	test_i18ngrep "expects a numerical value" stderr &&
+
+	git log --abbrev=XYZ -1 --pretty=format:%h 2>stderr &&
+	! test -s stderr &&
+
+	git diff --raw --abbrev=XYZ HEAD~ 2>stderr &&
+	! test -s stderr &&
+
+	test_must_fail git diff --raw --abbrev=XYZ --no-index X Y 2>stderr &&
+	! test -s stderr
+'
+
+for i in -41 -20 -10 -1 0 1 2 3 41
+do
+	test_expect_success "core.abbrev value $i out of range errors out" "
+		test_must_fail git -c core.abbrev=$i log -1 --pretty=format:%h 2>stderr &&
+		test_i18ngrep 'abbrev length out of range' stderr
+	"
+done
+
+for i in -41 -20 -10 -1
+do
+	test_expect_success "negative --abbrev=$i value out of range means --abbrev=40" "
+		git log --abbrev=$i -1 --pretty=format:%h >log &&
+		test_byte_count = 40 log
+	"
+done
+
+for i in 0 1 2 3 4
+do
+	test_expect_success "non-negative --abbrev=$i value <MINIMUM_ABBREV falls back on MINIMUM_ABBREV" "
+		git log --abbrev=$i -1 --pretty=format:%h >log &&
+		test_byte_count = 4 log
+	"
+done
+
+for i in 41 9001
+do
+	test_expect_success "non-negative --abbrev=$i value >MINIMUM_ABBREV falls back on 40" "
+		git log --abbrev=$i -1 --pretty=format:%h >log &&
+		test_byte_count = 40 log
+	"
+done
+
+for i in $(test_seq 4 40)
+do
+	test_expect_success "core.abbrev=$i and --abbrev=$i in combination within the valid range" "
+		# Both core.abbrev=X and --abbrev=X do the same thing
+		# in isolation
+		git -c core.abbrev=$i log -1 --pretty=format:%h >log &&
+		test_byte_count = $i log &&
+		git log --abbrev=$i -1 --pretty=format:%h >log &&
+		test_byte_count = $i log &&
+
+		# The --abbrev option should take priority over
+		# core.abbrev
+		git -c core.abbrev=20 log --abbrev=$i -1 --pretty=format:%h >log &&
+		test_byte_count = $i log
+	"
+done
+
+test_done
-- 
2.17.0.290.gded63e768a


  parent reply	other threads:[~2018-06-08 22:42 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-08 22:41 [PATCH 00/20] unconditional O(1) SHA-1 abbreviation Ævar Arnfjörð Bjarmason
2018-06-08 22:41 ` [PATCH 01/20] t/README: clarify the description of test_line_count Ævar Arnfjörð Bjarmason
2018-06-08 22:41 ` [PATCH 02/20] test library: add a test_byte_count Ævar Arnfjörð Bjarmason
2018-06-08 22:41 ` [PATCH 03/20] blame doc: explicitly note how --abbrev=40 gives 39 chars Ævar Arnfjörð Bjarmason
2018-06-12 18:10   ` Junio C Hamano
2018-06-08 22:41 ` Ævar Arnfjörð Bjarmason [this message]
2018-06-12 18:31   ` [PATCH 04/20] abbrev tests: add tests for core.abbrev and --abbrev Junio C Hamano
2018-06-08 22:41 ` [PATCH 05/20] abbrev tests: test "git-blame" behavior Ævar Arnfjörð Bjarmason
2018-06-08 22:41 ` [PATCH 06/20] blame: fix a bug, core.abbrev should work like --abbrev Ævar Arnfjörð Bjarmason
2018-06-08 22:41 ` [PATCH 07/20] abbrev tests: test "git branch" behavior Ævar Arnfjörð Bjarmason
2018-06-08 22:41 ` [PATCH 08/20] abbrev tests: test for "git-describe" behavior Ævar Arnfjörð Bjarmason
2018-06-08 22:41 ` [PATCH 09/20] abbrev tests: test for "git-log" behavior Ævar Arnfjörð Bjarmason
2018-06-09  8:43   ` Martin Ågren
2018-06-09  9:56     ` Ævar Arnfjörð Bjarmason
2018-06-09 13:56       ` Martin Ågren
2018-06-08 22:41 ` [PATCH 10/20] abbrev tests: test for "git-diff" behavior Ævar Arnfjörð Bjarmason
2018-06-08 22:41 ` [PATCH 11/20] abbrev tests: test for plumbing behavior Ævar Arnfjörð Bjarmason
2018-06-08 22:41 ` [PATCH 12/20] abbrev tests: test for --abbrev and core.abbrev=[+-]N Ævar Arnfjörð Bjarmason
2018-06-08 22:41 ` [PATCH 13/20] parse-options-cb.c: convert uses of 40 to GIT_SHA1_HEXSZ Ævar Arnfjörð Bjarmason
2018-06-08 22:41 ` [PATCH 14/20] config.c: use braces on multiple conditional arms Ævar Arnfjörð Bjarmason
2018-06-08 22:41 ` [PATCH 15/20] parse-options-cb.c: " Ævar Arnfjörð Bjarmason
2018-06-08 22:41 ` [PATCH 16/20] abbrev: unify the handling of non-numeric values Ævar Arnfjörð Bjarmason
2018-06-08 22:41 ` [PATCH 17/20] abbrev: unify the handling of empty values Ævar Arnfjörð Bjarmason
2018-06-09 14:24   ` Martin Ågren
2018-06-09 14:31     ` Martin Ågren
2018-06-08 22:41 ` [PATCH 18/20] abbrev parsing: use braces on multiple conditional arms Ævar Arnfjörð Bjarmason
2018-06-08 22:41 ` [PATCH 19/20] abbrev: support relative abbrev values Ævar Arnfjörð Bjarmason
2018-06-09 15:38   ` Martin Ågren
2018-06-12 19:16   ` Junio C Hamano
2018-06-13 22:22     ` Ævar Arnfjörð Bjarmason
2018-06-13 22:34       ` Junio C Hamano
2018-06-14  7:36         ` Ævar Arnfjörð Bjarmason
2018-06-14 15:50           ` Junio C Hamano
2018-06-14 19:07             ` Ævar Arnfjörð Bjarmason
2018-06-08 22:41 ` [PATCH 20/20] abbrev: add a core.validateAbbrev setting Ævar Arnfjörð Bjarmason
2018-06-09 15:47   ` Martin Ågren
2018-06-12 18:58     ` Junio C Hamano

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