git/t/t5402-post-merge-hook.sh
Josh England 46232915d5 Add post-merge hook, related documentation, and tests.
The post-merge hook enables one to hook in for `git pull` operations in order
to check and/or change attributes of a work tree from the hook.  As an example,
it can be used in combination with a pre-commit hook to save/restore file
ownership and permissions data (or file ACLs) within the repository and
transparently update the working tree after a `git pull` operation.

Signed-off-by: Josh England <jjengla@sandia.gov>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-09-18 17:40:24 -07:00

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#!/bin/sh
#
# Copyright (c) 2006 Josh England
#
test_description='Test the post-merge hook.'
. ./test-lib.sh
test_expect_success setup '
echo Data for commit0. >a &&
git update-index --add a &&
tree0=$(git write-tree) &&
commit0=$(echo setup | git commit-tree $tree0) &&
echo Changed data for commit1. >a &&
git update-index a &&
tree1=$(git write-tree) &&
commit1=$(echo modify | git commit-tree $tree1 -p $commit0) &&
git update-ref refs/heads/master $commit0 &&
git-clone ./. clone1 &&
GIT_DIR=clone1/.git git update-index --add a &&
git-clone ./. clone2 &&
GIT_DIR=clone2/.git git update-index --add a
'
for clone in 1 2; do
cat >clone${clone}/.git/hooks/post-merge <<'EOF'
#!/bin/sh
echo $@ >> $GIT_DIR/post-merge.args
EOF
chmod u+x clone${clone}/.git/hooks/post-merge
done
test_expect_failure 'post-merge does not run for up-to-date ' '
GIT_DIR=clone1/.git git merge $commit0 &&
test -e clone1/.git/post-merge.args
'
test_expect_success 'post-merge runs as expected ' '
GIT_DIR=clone1/.git git merge $commit1 &&
test -e clone1/.git/post-merge.args
'
test_expect_success 'post-merge from normal merge receives the right argument ' '
grep 0 clone1/.git/post-merge.args
'
test_expect_success 'post-merge from squash merge runs as expected ' '
GIT_DIR=clone2/.git git merge --squash $commit1 &&
test -e clone2/.git/post-merge.args
'
test_expect_success 'post-merge from squash merge receives the right argument ' '
grep 1 clone2/.git/post-merge.args
'
test_done