From f4609b896fac842433bd495c166d5987852a6a73 Mon Sep 17 00:00:00 2001 From: Vincent Ambo Date: Sat, 21 Nov 2020 19:20:35 +0100 Subject: merge(3p/git): Merge git subtree at v2.29.2 This also bumps the stable nixpkgs to 20.09 as of 2020-11-21, because there is some breakage in the git build related to the netrc credentials helper which someone has taken care of in nixpkgs. The stable channel is not used for anything other than git, so this should be fine. Change-Id: I3575a19dab09e1e9556cf8231d717de9890484fb --- .../git/t/t6434-merge-recursive-rename-options.sh | 330 +++++++++++++++++++++ 1 file changed, 330 insertions(+) create mode 100755 third_party/git/t/t6434-merge-recursive-rename-options.sh (limited to 'third_party/git/t/t6434-merge-recursive-rename-options.sh') diff --git a/third_party/git/t/t6434-merge-recursive-rename-options.sh b/third_party/git/t/t6434-merge-recursive-rename-options.sh new file mode 100755 index 000000000000..3d9fae68c41c --- /dev/null +++ b/third_party/git/t/t6434-merge-recursive-rename-options.sh @@ -0,0 +1,330 @@ +#!/bin/sh + +test_description='merge-recursive rename options + +Test rename detection by examining rename/delete conflicts. + +* (HEAD -> rename) rename +| * (master) delete +|/ +* base + +git diff --name-status base master +D 0-old +D 1-old +D 2-old +D 3-old + +git diff --name-status -M01 base rename +R025 0-old 0-new +R050 1-old 1-new +R075 2-old 2-new +R100 3-old 3-new + +Actual similarity indices are parsed from diff output. We rely on the fact that +they are rounded down (see, e.g., Documentation/diff-generate-patch.txt, which +mentions this in a different context). +' + +. ./test-lib.sh + +get_expected_stages () { + git checkout rename -- $1-new && + git ls-files --stage $1-new >expected-stages-undetected-$1 && + sed "s/ 0 / 2 /" expected-stages-detected-$1 && + git read-tree -u --reset HEAD +} + +rename_detected () { + git ls-files --stage $1-old $1-new >stages-actual-$1 && + test_cmp expected-stages-detected-$1 stages-actual-$1 +} + +rename_undetected () { + git ls-files --stage $1-old $1-new >stages-actual-$1 && + test_cmp expected-stages-undetected-$1 stages-actual-$1 +} + +check_common () { + git ls-files --stage >stages-actual && + test_line_count = 4 stages-actual +} + +check_threshold_0 () { + check_common && + rename_detected 0 && + rename_detected 1 && + rename_detected 2 && + rename_detected 3 +} + +check_threshold_1 () { + check_common && + rename_undetected 0 && + rename_detected 1 && + rename_detected 2 && + rename_detected 3 +} + +check_threshold_2 () { + check_common && + rename_undetected 0 && + rename_undetected 1 && + rename_detected 2 && + rename_detected 3 +} + +check_exact_renames () { + check_common && + rename_undetected 0 && + rename_undetected 1 && + rename_undetected 2 && + rename_detected 3 +} + +check_no_renames () { + check_common && + rename_undetected 0 && + rename_undetected 1 && + rename_undetected 2 && + rename_undetected 3 +} + +test_expect_success 'setup repo' ' + cat <<-\EOF >3-old && + 33a + 33b + 33c + 33d + EOF + sed s/33/22/ <3-old >2-old && + sed s/33/11/ <3-old >1-old && + sed s/33/00/ <3-old >0-old && + git add [0-3]-old && + git commit -m base && + git rm [0-3]-old && + git commit -m delete && + git checkout -b rename HEAD^ && + cp 3-old 3-new && + sed 1,1s/./x/ <2-old >2-new && + sed 1,2s/./x/ <1-old >1-new && + sed 1,3s/./x/ <0-old >0-new && + git add [0-3]-new && + git rm [0-3]-old && + git commit -m rename && + get_expected_stages 0 && + get_expected_stages 1 && + get_expected_stages 2 && + get_expected_stages 3 && + check_50="false" && + tail="HEAD^ -- HEAD master" +' + +test_expect_success 'setup thresholds' ' + git diff --name-status -M01 HEAD^ HEAD >diff-output && + test_debug "cat diff-output" && + test_line_count = 4 diff-output && + grep "R[0-9][0-9][0-9] \([0-3]\)-old \1-new" diff-output \ + >grep-output && + test_cmp diff-output grep-output && + th0=$(sed -n "s/R\(...\) 0-old 0-new/\1/p" diff-output-0 && + git diff --name-status -M$th1 --diff-filter=R HEAD^ HEAD \ + >diff-output-1 && + git diff --name-status -M$th2 --diff-filter=R HEAD^ HEAD \ + >diff-output-2 && + git diff --name-status -M100% --diff-filter=R HEAD^ HEAD \ + >diff-output-3 && + test_line_count = 4 diff-output-0 && + test_line_count = 3 diff-output-1 && + test_line_count = 2 diff-output-2 && + test_line_count = 1 diff-output-3 +' + +test_expect_success 'default similarity threshold is 50%' ' + git read-tree --reset -u HEAD && + test_must_fail git merge-recursive $tail && + $check_50 +' + +test_expect_success 'low rename threshold' ' + git read-tree --reset -u HEAD && + test_must_fail git merge-recursive --find-renames=$th0 $tail && + check_threshold_0 +' + +test_expect_success 'medium rename threshold' ' + git read-tree --reset -u HEAD && + test_must_fail git merge-recursive --find-renames=$th1 $tail && + check_threshold_1 +' + +test_expect_success 'high rename threshold' ' + git read-tree --reset -u HEAD && + test_must_fail git merge-recursive --find-renames=$th2 $tail && + check_threshold_2 +' + +test_expect_success 'exact renames only' ' + git read-tree --reset -u HEAD && + test_must_fail git merge-recursive --find-renames=100% $tail && + check_exact_renames +' + +test_expect_success 'rename threshold is truncated' ' + git read-tree --reset -u HEAD && + test_must_fail git merge-recursive --find-renames=200% $tail && + check_exact_renames +' + +test_expect_success 'disabled rename detection' ' + git read-tree --reset -u HEAD && + git merge-recursive --no-renames $tail && + check_no_renames +' + +test_expect_success 'last wins in --find-renames= --find-renames=' ' + git read-tree --reset -u HEAD && + test_must_fail git merge-recursive \ + --find-renames=$th0 --find-renames=$th2 $tail && + check_threshold_2 +' + +test_expect_success '--find-renames resets threshold' ' + git read-tree --reset -u HEAD && + test_must_fail git merge-recursive \ + --find-renames=$th0 --find-renames $tail && + $check_50 +' + +test_expect_success 'last wins in --no-renames --find-renames' ' + git read-tree --reset -u HEAD && + test_must_fail git merge-recursive --no-renames --find-renames $tail && + $check_50 +' + +test_expect_success 'last wins in --find-renames --no-renames' ' + git read-tree --reset -u HEAD && + git merge-recursive --find-renames --no-renames $tail && + check_no_renames +' + +test_expect_success 'assumption for further tests: trivial merge succeeds' ' + git read-tree --reset -u HEAD && + git merge-recursive HEAD -- HEAD HEAD && + git diff --quiet --cached && + git merge-recursive --find-renames=$th0 HEAD -- HEAD HEAD && + git diff --quiet --cached && + git merge-recursive --find-renames=$th2 HEAD -- HEAD HEAD && + git diff --quiet --cached && + git merge-recursive --find-renames=100% HEAD -- HEAD HEAD && + git diff --quiet --cached && + git merge-recursive --no-renames HEAD -- HEAD HEAD && + git diff --quiet --cached +' + +test_expect_success '--find-renames rejects negative argument' ' + git read-tree --reset -u HEAD && + test_must_fail git merge-recursive --find-renames=-25 \ + HEAD -- HEAD HEAD && + git diff --quiet --cached +' + +test_expect_success '--find-renames rejects non-numbers' ' + git read-tree --reset -u HEAD && + test_must_fail git merge-recursive --find-renames=0xf \ + HEAD -- HEAD HEAD && + git diff --quiet --cached +' + +test_expect_success 'rename-threshold= is a synonym for find-renames=' ' + git read-tree --reset -u HEAD && + test_must_fail git merge-recursive --rename-threshold=$th0 $tail && + check_threshold_0 +' + +test_expect_success 'last wins in --no-renames --rename-threshold=' ' + git read-tree --reset -u HEAD && + test_must_fail git merge-recursive --no-renames --rename-threshold=$th0 $tail && + check_threshold_0 +' + +test_expect_success 'last wins in --rename-threshold= --no-renames' ' + git read-tree --reset -u HEAD && + git merge-recursive --rename-threshold=$th0 --no-renames $tail && + check_no_renames +' + +test_expect_success '--rename-threshold= rejects negative argument' ' + git read-tree --reset -u HEAD && + test_must_fail git merge-recursive --rename-threshold=-25 \ + HEAD -- HEAD HEAD && + git diff --quiet --cached +' + +test_expect_success '--rename-threshold= rejects non-numbers' ' + git read-tree --reset -u HEAD && + test_must_fail git merge-recursive --rename-threshold=0xf \ + HEAD -- HEAD HEAD && + git diff --quiet --cached +' + +test_expect_success 'last wins in --rename-threshold= --find-renames=' ' + git read-tree --reset -u HEAD && + test_must_fail git merge-recursive \ + --rename-threshold=$th0 --find-renames=$th2 $tail && + check_threshold_2 +' + +test_expect_success 'last wins in --find-renames= --rename-threshold=' ' + git read-tree --reset -u HEAD && + test_must_fail git merge-recursive \ + --find-renames=$th2 --rename-threshold=$th0 $tail && + check_threshold_0 +' + +test_expect_success 'merge.renames disables rename detection' ' + git read-tree --reset -u HEAD && + git -c merge.renames=false merge-recursive $tail && + check_no_renames +' + +test_expect_success 'merge.renames defaults to diff.renames' ' + git read-tree --reset -u HEAD && + git -c diff.renames=false merge-recursive $tail && + check_no_renames +' + +test_expect_success 'merge.renames overrides diff.renames' ' + git read-tree --reset -u HEAD && + test_must_fail git -c diff.renames=false -c merge.renames=true merge-recursive $tail && + $check_50 +' + +test_done -- cgit 1.4.1