From 9df46763ef1ee46f2dc1de768b1403552779d011 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=86var=20Arnfj=C3=B6r=C3=B0=20Bjarmason?= Date: Sat, 20 May 2017 21:42:07 +0000 Subject: [PATCH] log: add exhaustive tests for pattern style options & config MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add exhaustive tests for how the different grep.patternType options & the corresponding command-line options affect git-log. Before this change it was possible to patch revision.c so that the --basic-regexp option was synonymous with --extended-regexp, and --perl-regexp wasn't recognized at all, and still have 100% of the test suite pass. This was because the first test being modified here, added in commit 34a4ae55b2 ("log --grep: use the same helper to set -E/-F options as "git grep"", 2012-10-03), didn't actually check whether we'd enabled extended regular expressions as distinct from re-toggling non-fixed string support. Fix that by changing the pattern to a pattern that'll only match if --extended-regexp option is provided, but won't match under the default --basic-regexp option. Other potential regressions were possible since there were no tests for the rest of the combinations of grep.patternType configuration toggles & corresponding git-log command-line options. Add exhaustive tests for those. The patterns being passed to fixed/basic/extended/PCRE are carefully crafted to return the wrong thing if the grep engine were to pick any other matching method than the one it's told to use. Signed-off-by: Ævar Arnfjörð Bjarmason Signed-off-by: Junio C Hamano --- t/t4202-log.sh | 98 +++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 97 insertions(+), 1 deletion(-) diff --git a/t/t4202-log.sh b/t/t4202-log.sh index f577990716..a8dce0ca2d 100755 --- a/t/t4202-log.sh +++ b/t/t4202-log.sh @@ -262,7 +262,30 @@ test_expect_success 'log --grep -i' ' test_expect_success 'log -F -E --grep= uses ere' ' echo second >expect && - git log -1 --pretty="tformat:%s" -F -E --grep=s.c.nd >actual && + # basic would need \(s\) to do the same + git log -1 --pretty="tformat:%s" -F -E --grep="(s).c.nd" >actual && + test_cmp expect actual +' + +test_expect_success PCRE 'log -F -E --perl-regexp --grep= uses PCRE' ' + test_when_finished "rm -rf num_commits" && + git init num_commits && + ( + cd num_commits && + test_commit 1d && + test_commit 2e + ) && + + # In PCRE \d in [\d] is like saying "0-9", and matches the 2 + # in 2e... + echo 2e >expect && + git -C num_commits log -1 --pretty="tformat:%s" -F -E --perl-regexp --grep="[\d]" >actual && + test_cmp expect actual && + + # ...in POSIX basic and extended it is the same as [d], + # i.e. "d", which matches 1d, but does not match 2e. + echo 1d >expect && + git -C num_commits log -1 --pretty="tformat:%s" -F -E --grep="[\d]" >actual && test_cmp expect actual ' @@ -280,6 +303,79 @@ test_expect_success 'log with grep.patternType configuration and command line' ' test_cmp expect actual ' +test_expect_success 'log with various grep.patternType configurations & command-lines' ' + git init pattern-type && + ( + cd pattern-type && + test_commit 1 file A && + + # The tagname is overridden here because creating a + # tag called "(1|2)" as test_commit would otherwise + # implicitly do would fail on e.g. MINGW. + test_commit "(1|2)" file B 2 && + + echo "(1|2)" >expect.fixed && + cp expect.fixed expect.basic && + cp expect.fixed expect.extended && + cp expect.fixed expect.perl && + + # A strcmp-like match with fixed. + git -c grep.patternType=fixed log --pretty=tformat:%s \ + --grep="(1|2)" >actual.fixed && + + # POSIX basic matches (, | and ) literally. + git -c grep.patternType=basic log --pretty=tformat:%s \ + --grep="(.|.)" >actual.basic && + + # POSIX extended needs to have | escaped to match it + # literally, whereas under basic this is the same as + # (|2), i.e. it would also match "1". This test checks + # for extended by asserting that it is not matching + # what basic would match. + git -c grep.patternType=extended log --pretty=tformat:%s \ + --grep="\|2" >actual.extended && + if test_have_prereq PCRE + then + # Only PCRE would match [\d]\| with only + # "(1|2)" due to [\d]. POSIX basic would match + # both it and "1" since similarly to the + # extended match above it is the same as + # \([\d]\|\). POSIX extended would + # match neither. + git -c grep.patternType=perl log --pretty=tformat:%s \ + --grep="[\d]\|" >actual.perl && + test_cmp expect.perl actual.perl + fi && + test_cmp expect.fixed actual.fixed && + test_cmp expect.basic actual.basic && + test_cmp expect.extended actual.extended && + + git log --pretty=tformat:%s -F \ + --grep="(1|2)" >actual.fixed.short-arg && + git log --pretty=tformat:%s -E \ + --grep="\|2" >actual.extended.short-arg && + test_cmp expect.fixed actual.fixed.short-arg && + test_cmp expect.extended actual.extended.short-arg && + + git log --pretty=tformat:%s --fixed-strings \ + --grep="(1|2)" >actual.fixed.long-arg && + git log --pretty=tformat:%s --basic-regexp \ + --grep="(.|.)" >actual.basic.long-arg && + git log --pretty=tformat:%s --extended-regexp \ + --grep="\|2" >actual.extended.long-arg && + if test_have_prereq PCRE + then + git log --pretty=tformat:%s --perl-regexp \ + --grep="[\d]\|" >actual.perl.long-arg && + test_cmp expect.perl actual.perl.long-arg + + fi && + test_cmp expect.fixed actual.fixed.long-arg && + test_cmp expect.basic actual.basic.long-arg && + test_cmp expect.extended actual.extended.long-arg + ) +' + cat > expect <