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git/t/t4055-diff-context.sh

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diff: diff.context configuration gives default to -U Introduce a configuration variable diff.context that tells Porcelain commands to use a non-default number of context lines instead of 3 (the default). With this variable, users do not have to keep repeating "git log -U8" from the command line; instead, it becomes sufficient to say "git config diff.context 8" just once. Signed-off-by: Jeff Muizelaar <jmuizelaar@mozilla.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-27 19:12:52 +00:00
#!/bin/sh
#
# Copyright (c) 2012 Mozilla Foundation
#
test_description='diff.context configuration'
revisions API: have release_revisions() release "mailmap" Extend the the release_revisions() function so that it frees the "mailmap" in the "struct rev_info". The log family of functions now calls the clear_mailmap() function added in fa8afd18e5a (revisions API: provide and use a release_revisions(), 2021-09-19), allowing us to whitelist some tests with "TEST_PASSES_SANITIZE_LEAK=true". Unfortunately having a pointer to a mailmap in "struct rev_info" instead of an embedded member that we "own" get a bit messy, as can be seen in the change to builtin/commit.c. When we free() this data we won't be able to tell apart a pointer to a "mailmap" on the heap from one on the stack. As seen in ea57bc0d41b (log: add --use-mailmap option, 2013-01-05) the "log" family allocates it on the heap, but in the find_author_by_nickname() code added in ea16794e430 (commit: search author pattern against mailmap, 2013-08-23) we allocated it on the stack instead. Ideally we'd simply change that member to a "struct string_list mailmap" and never free() the "mailmap" itself, but that would be a much larger change to the revisions API. We have code that needs to hand an existing "mailmap" to a "struct rev_info", while we could change all of that, let's not go there now. The complexity isn't in the ownership of the "mailmap" per-se, but that various things assume a "rev_info.mailmap == NULL" means "doesn't want mailmap", if we changed that to an init'd "struct string_list we'd need to carefully refactor things to change those assumptions. Let's instead always free() it, and simply declare that if you add such a "mailmap" it must be allocated on the heap. Any modern libc will correctly panic if we free() a stack variable, so this should be safe going forward. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-04-13 20:01:46 +00:00
TEST_PASSES_SANITIZE_LEAK=true
diff: diff.context configuration gives default to -U Introduce a configuration variable diff.context that tells Porcelain commands to use a non-default number of context lines instead of 3 (the default). With this variable, users do not have to keep repeating "git log -U8" from the command line; instead, it becomes sufficient to say "git config diff.context 8" just once. Signed-off-by: Jeff Muizelaar <jmuizelaar@mozilla.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-27 19:12:52 +00:00
. ./test-lib.sh
test_expect_success 'setup' '
t4055: avoid use of sed 'a' command The 'a', 'i' and 'c' commands take a literal text to be added followed by backslash, but then in the source we cannot indent the literal text which makes it ugly. We need to also remember to double the backslash inside double quotes. Avoid these issues altogether by having an extra line in a template file and generate test vectors by deleting the line or replacing the line and not using the 'a' command. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-10-02 18:50:16 +00:00
cat >template <<-\EOF &&
diff: diff.context configuration gives default to -U Introduce a configuration variable diff.context that tells Porcelain commands to use a non-default number of context lines instead of 3 (the default). With this variable, users do not have to keep repeating "git log -U8" from the command line; instead, it becomes sufficient to say "git config diff.context 8" just once. Signed-off-by: Jeff Muizelaar <jmuizelaar@mozilla.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-27 19:12:52 +00:00
firstline
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c
d
e
f
preline
t4055: avoid use of sed 'a' command The 'a', 'i' and 'c' commands take a literal text to be added followed by backslash, but then in the source we cannot indent the literal text which makes it ugly. We need to also remember to double the backslash inside double quotes. Avoid these issues altogether by having an extra line in a template file and generate test vectors by deleting the line or replacing the line and not using the 'a' command. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-10-02 18:50:16 +00:00
TARGET
diff: diff.context configuration gives default to -U Introduce a configuration variable diff.context that tells Porcelain commands to use a non-default number of context lines instead of 3 (the default). With this variable, users do not have to keep repeating "git log -U8" from the command line; instead, it becomes sufficient to say "git config diff.context 8" just once. Signed-off-by: Jeff Muizelaar <jmuizelaar@mozilla.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-27 19:12:52 +00:00
postline
i
j
k
l
m
n
EOF
t4055: avoid use of sed 'a' command The 'a', 'i' and 'c' commands take a literal text to be added followed by backslash, but then in the source we cannot indent the literal text which makes it ugly. We need to also remember to double the backslash inside double quotes. Avoid these issues altogether by having an extra line in a template file and generate test vectors by deleting the line or replacing the line and not using the 'a' command. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-10-02 18:50:16 +00:00
sed "/TARGET/d" >x <template &&
diff: diff.context configuration gives default to -U Introduce a configuration variable diff.context that tells Porcelain commands to use a non-default number of context lines instead of 3 (the default). With this variable, users do not have to keep repeating "git log -U8" from the command line; instead, it becomes sufficient to say "git config diff.context 8" just once. Signed-off-by: Jeff Muizelaar <jmuizelaar@mozilla.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-27 19:12:52 +00:00
git update-index --add x &&
git commit -m initial &&
t4055: avoid use of sed 'a' command The 'a', 'i' and 'c' commands take a literal text to be added followed by backslash, but then in the source we cannot indent the literal text which makes it ugly. We need to also remember to double the backslash inside double quotes. Avoid these issues altogether by having an extra line in a template file and generate test vectors by deleting the line or replacing the line and not using the 'a' command. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-10-02 18:50:16 +00:00
sed "s/TARGET/ADDED/" >x <template &&
diff: diff.context configuration gives default to -U Introduce a configuration variable diff.context that tells Porcelain commands to use a non-default number of context lines instead of 3 (the default). With this variable, users do not have to keep repeating "git log -U8" from the command line; instead, it becomes sufficient to say "git config diff.context 8" just once. Signed-off-by: Jeff Muizelaar <jmuizelaar@mozilla.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-27 19:12:52 +00:00
git update-index --add x &&
git commit -m next &&
t4055: avoid use of sed 'a' command The 'a', 'i' and 'c' commands take a literal text to be added followed by backslash, but then in the source we cannot indent the literal text which makes it ugly. We need to also remember to double the backslash inside double quotes. Avoid these issues altogether by having an extra line in a template file and generate test vectors by deleting the line or replacing the line and not using the 'a' command. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-10-02 18:50:16 +00:00
sed "s/TARGET/MODIFIED/" >x <template
diff: diff.context configuration gives default to -U Introduce a configuration variable diff.context that tells Porcelain commands to use a non-default number of context lines instead of 3 (the default). With this variable, users do not have to keep repeating "git log -U8" from the command line; instead, it becomes sufficient to say "git config diff.context 8" just once. Signed-off-by: Jeff Muizelaar <jmuizelaar@mozilla.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-27 19:12:52 +00:00
'
test_expect_success 'the default number of context lines is 3' '
git diff >output &&
! grep "^ d" output &&
grep "^ e" output &&
grep "^ j" output &&
! grep "^ k" output
'
test_expect_success 'diff.context honored by "log"' '
git log -1 -p >output &&
! grep firstline output &&
git config diff.context 8 &&
git log -1 -p >output &&
grep "^ firstline" output
'
test_expect_success 'The -U option overrides diff.context' '
git config diff.context 8 &&
git log -U4 -1 >output &&
! grep "^ firstline" output
'
test_expect_success 'diff.context honored by "diff"' '
git config diff.context 8 &&
git diff >output &&
grep "^ firstline" output
'
test_expect_success 'plumbing not affected' '
git config diff.context 8 &&
git diff-files -p >output &&
! grep "^ firstline" output
'
test_expect_success 'non-integer config parsing' '
git config diff.context no &&
test_must_fail git diff 2>output &&
config: make numeric parsing errors more clear If we try to parse an integer config argument and get a number outside of the representable range, we die with the cryptic message: "bad config value for '%s'". We can improve two things: 1. Show the value that produced the error (e.g., bad config value '3g' for 'foo.bar'). 2. Mention the reason the value was rejected (e.g., "invalid unit" versus "out of range"). A few tests need to be updated with the new output, but that should not be representative of real-world breakage, as scripts should not be depending on the exact text of our stderr output, which is subject to i18n anyway. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-09-08 08:38:22 +00:00
test_i18ngrep "bad numeric config value" output
diff: diff.context configuration gives default to -U Introduce a configuration variable diff.context that tells Porcelain commands to use a non-default number of context lines instead of 3 (the default). With this variable, users do not have to keep repeating "git log -U8" from the command line; instead, it becomes sufficient to say "git config diff.context 8" just once. Signed-off-by: Jeff Muizelaar <jmuizelaar@mozilla.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-27 19:12:52 +00:00
'
test_expect_success 'negative integer config parsing' '
git config diff.context -1 &&
test_must_fail git diff 2>output &&
rewrite git_config() to use the config-set API Of all the functions in `git_config*()` family, `git_config()` has the most invocations in the whole code base. Each `git_config()` invocation causes config file rereads which can be avoided using the config-set API. Use the config-set API to rewrite `git_config()` to use the config caching layer to avoid config file rereads on each invocation during a git process lifetime. First invocation constructs the cache, and after that for each successive invocation, `git_config()` feeds values from the config cache instead of rereading the configuration files. Signed-off-by: Tanay Abhra <tanayabh@gmail.com> Reviewed-by: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-08-07 11:59:17 +00:00
test_i18ngrep "bad config variable" output
diff: diff.context configuration gives default to -U Introduce a configuration variable diff.context that tells Porcelain commands to use a non-default number of context lines instead of 3 (the default). With this variable, users do not have to keep repeating "git log -U8" from the command line; instead, it becomes sufficient to say "git config diff.context 8" just once. Signed-off-by: Jeff Muizelaar <jmuizelaar@mozilla.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-27 19:12:52 +00:00
'
test_expect_success '-U0 is valid, so is diff.context=0' '
git config diff.context 0 &&
git diff >output &&
grep "^-ADDED" output &&
grep "^+MODIFIED" output
'
test_done
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