tvl-depot/third_party/git/t/t4064-diff-oidfind.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='test finding specific blobs in the revision walking'
. ./test-lib.sh
test_expect_success 'setup ' '
git commit --allow-empty -m "empty initial commit" &&
echo "Hello, world!" >greeting &&
git add greeting &&
git commit -m "add the greeting blob" && # borrowed from Git from the Bottom Up
git tag -m "the blob" greeting $(git rev-parse HEAD:greeting) &&
echo asdf >unrelated &&
git add unrelated &&
git commit -m "unrelated history" &&
git revert HEAD^ &&
git commit --allow-empty -m "another unrelated commit"
'
test_expect_success 'find the greeting blob' '
cat >expect <<-EOF &&
Revert "add the greeting blob"
add the greeting blob
EOF
git log --format=%s --find-object=greeting^{blob} >actual &&
test_cmp expect actual
'
test_expect_success 'setup a tree' '
mkdir a &&
echo asdf >a/file &&
git add a/file &&
git commit -m "add a file in a subdirectory"
'
test_expect_success 'find a tree' '
cat >expect <<-EOF &&
add a file in a subdirectory
EOF
git log --format=%s -t --find-object=HEAD:a >actual &&
test_cmp expect actual
'
test_expect_success 'setup a submodule' '
test_create_repo sub &&
test_commit -C sub sub &&
git submodule add ./sub sub &&
git commit -a -m "add sub"
'
test_expect_success 'find a submodule' '
cat >expect <<-EOF &&
add sub
EOF
git log --format=%s --find-object=HEAD:sub >actual &&
test_cmp expect actual
'
test_expect_success 'set up merge tests' '
test_commit base &&
git checkout -b boring base^ &&
echo boring >file &&
git add file &&
git commit -m boring &&
git checkout -b interesting base^ &&
echo interesting >file &&
git add file &&
git commit -m interesting &&
blob=$(git rev-parse interesting:file)
'
test_expect_success 'detect merge which introduces blob' '
git checkout -B merge base &&
git merge --no-commit boring &&
echo interesting >file &&
git commit -am "introduce blob" &&
git diff-tree --format=%s --find-object=$blob -c --name-status HEAD >actual &&
cat >expect <<-\EOF &&
introduce blob
AM file
EOF
test_cmp expect actual
'
test_expect_success 'detect merge which removes blob' '
git checkout -B merge interesting &&
git merge --no-commit base &&
echo boring >file &&
git commit -am "remove blob" &&
git diff-tree --format=%s --find-object=$blob -c --name-status HEAD >actual &&
cat >expect <<-\EOF &&
remove blob
MA file
EOF
test_cmp expect actual
'
test_expect_success 'do not detect merge that does not touch blob' '
git checkout -B merge interesting &&
git merge -m "untouched blob" base &&
git diff-tree --format=%s --find-object=$blob -c --name-status HEAD >actual &&
cat >expect <<-\EOF &&
untouched blob
EOF
test_cmp expect actual
'
test_done