tvl-depot/third_party/git/t/t4108-apply-threeway.sh
Vincent Ambo f4609b896f 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
2020-11-21 19:45:56 +01:00

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#!/bin/sh
test_description='git apply --3way'
. ./test-lib.sh
print_sanitized_conflicted_diff () {
git diff HEAD >diff.raw &&
sed -e '
/^index /d
s/^\(+[<>|][<>|][<>|][<>|]*\) .*/\1/
' diff.raw
}
test_expect_success setup '
test_tick &&
test_write_lines 1 2 3 4 5 6 7 >one &&
cat one >two &&
git add one two &&
git commit -m initial &&
git branch side &&
test_tick &&
test_write_lines 1 two 3 4 5 six 7 >one &&
test_write_lines 1 two 3 4 5 6 7 >two &&
git commit -a -m master &&
git checkout side &&
test_write_lines 1 2 3 4 five 6 7 >one &&
test_write_lines 1 2 3 4 five 6 7 >two &&
git commit -a -m side &&
git checkout master
'
test_expect_success 'apply without --3way' '
git diff side^ side >P.diff &&
# should fail to apply
git reset --hard &&
git checkout master^0 &&
test_must_fail git apply --index P.diff &&
# should leave things intact
git diff-files --exit-code &&
git diff-index --exit-code --cached HEAD
'
test_apply_with_3way () {
# Merging side should be similar to applying this patch
git diff ...side >P.diff &&
# The corresponding conflicted merge
git reset --hard &&
git checkout master^0 &&
test_must_fail git merge --no-commit side &&
git ls-files -s >expect.ls &&
print_sanitized_conflicted_diff >expect.diff &&
# should fail to apply
git reset --hard &&
git checkout master^0 &&
test_must_fail git apply --index --3way P.diff &&
git ls-files -s >actual.ls &&
print_sanitized_conflicted_diff >actual.diff &&
# The result should resemble the corresponding merge
test_cmp expect.ls actual.ls &&
test_cmp expect.diff actual.diff
}
test_expect_success 'apply with --3way' '
test_apply_with_3way
'
test_expect_success 'apply with --3way with merge.conflictStyle = diff3' '
test_config merge.conflictStyle diff3 &&
test_apply_with_3way
'
test_expect_success 'apply with --3way with rerere enabled' '
test_config rerere.enabled true &&
# Merging side should be similar to applying this patch
git diff ...side >P.diff &&
# The corresponding conflicted merge
git reset --hard &&
git checkout master^0 &&
test_must_fail git merge --no-commit side &&
# Manually resolve and record the resolution
test_write_lines 1 two 3 4 five six 7 >one &&
git rerere &&
cat one >expect &&
# should fail to apply
git reset --hard &&
git checkout master^0 &&
test_must_fail git apply --index --3way P.diff &&
# but rerere should have replayed the recorded resolution
test_cmp expect one
'
test_expect_success 'apply -3 with add/add conflict setup' '
git reset --hard &&
git checkout -b adder &&
test_write_lines 1 2 3 4 5 6 7 >three &&
test_write_lines 1 2 3 4 5 6 7 >four &&
git add three four &&
git commit -m "add three and four" &&
git checkout -b another adder^ &&
test_write_lines 1 2 3 4 5 6 7 >three &&
test_write_lines 1 2 3 four 5 6 7 >four &&
git add three four &&
git commit -m "add three and four" &&
# Merging another should be similar to applying this patch
git diff adder...another >P.diff &&
git checkout adder^0 &&
test_must_fail git merge --no-commit another &&
git ls-files -s >expect.ls &&
print_sanitized_conflicted_diff >expect.diff
'
test_expect_success 'apply -3 with add/add conflict' '
# should fail to apply ...
git reset --hard &&
git checkout adder^0 &&
test_must_fail git apply --index --3way P.diff &&
# ... and leave conflicts in the index and in the working tree
git ls-files -s >actual.ls &&
print_sanitized_conflicted_diff >actual.diff &&
# The result should resemble the corresponding merge
test_cmp expect.ls actual.ls &&
test_cmp expect.diff actual.diff
'
test_expect_success 'apply -3 with add/add conflict (dirty working tree)' '
# should fail to apply ...
git reset --hard &&
git checkout adder^0 &&
echo >>four &&
cat four >four.save &&
cat three >three.save &&
git ls-files -s >expect.ls &&
test_must_fail git apply --index --3way P.diff &&
# ... and should not touch anything
git ls-files -s >actual.ls &&
test_cmp expect.ls actual.ls &&
test_cmp four.save four &&
test_cmp three.save three
'
test_done