git-commit-vandalism/t/t7201-co.sh
Daniel Barkalow 352eadc400 Check early that a new branch is new and valid
If you fail to update refs to change branches in checkout, your index
and working tree are left already updated. We don't have an easy way
to undo this, but at least we can check things that would make the
creation of a new branch fail. These checks were in the shell version,
and were lost in the C conversion.

The messages are from the shell version, and should probably be made nicer.

[jc: added test to t7201]

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-21 23:17:06 -07:00

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#!/bin/sh
#
# Copyright (c) 2006 Junio C Hamano
#
test_description='git checkout tests.
Creates master, forks renamer and side branches from it.
Test switching across them.
! [master] Initial A one, A two
* [renamer] Renamer R one->uno, M two
! [side] Side M one, D two, A three
---
+ [side] Side M one, D two, A three
* [renamer] Renamer R one->uno, M two
+*+ [master] Initial A one, A two
'
. ./test-lib.sh
test_tick
fill () {
for i
do
echo "$i"
done
}
test_expect_success setup '
fill x y z > same &&
fill 1 2 3 4 5 6 7 8 >one &&
fill a b c d e >two &&
git add same one two &&
git commit -m "Initial A one, A two" &&
git checkout -b renamer &&
rm -f one &&
fill 1 3 4 5 6 7 8 >uno &&
git add uno &&
fill a b c d e f >two &&
git commit -a -m "Renamer R one->uno, M two" &&
git checkout -b side master &&
fill 1 2 3 4 5 6 7 >one &&
fill A B C D E >three &&
rm -f two &&
git update-index --add --remove one two three &&
git commit -m "Side M one, D two, A three" &&
git checkout master
'
test_expect_success "checkout from non-existing branch" '
git checkout -b delete-me master &&
rm .git/refs/heads/delete-me &&
test refs/heads/delete-me = "$(git symbolic-ref HEAD)" &&
git checkout master &&
test refs/heads/master = "$(git symbolic-ref HEAD)"
'
test_expect_success "checkout with dirty tree without -m" '
fill 0 1 2 3 4 5 6 7 8 >one &&
if git checkout side
then
echo Not happy
false
else
echo "happy - failed correctly"
fi
'
test_expect_success "checkout with unrelated dirty tree without -m" '
git checkout -f master &&
fill 0 1 2 3 4 5 6 7 8 >same &&
cp same kept
git checkout side >messages &&
test_cmp same kept
(cat > messages.expect <<EOF
M same
EOF
) &&
touch messages.expect &&
test_cmp messages.expect messages
'
test_expect_success "checkout -m with dirty tree" '
git checkout -f master &&
git clean -f &&
fill 0 1 2 3 4 5 6 7 8 >one &&
git checkout -m side > messages &&
test "$(git symbolic-ref HEAD)" = "refs/heads/side" &&
(cat >expect.messages <<EOF
M one
EOF
) &&
test_cmp expect.messages messages &&
fill "M one" "A three" "D two" >expect.master &&
git diff --name-status master >current.master &&
test_cmp expect.master current.master &&
fill "M one" >expect.side &&
git diff --name-status side >current.side &&
test_cmp expect.side current.side &&
: >expect.index &&
git diff --cached >current.index &&
test_cmp expect.index current.index
'
test_expect_success "checkout -m with dirty tree, renamed" '
git checkout -f master && git clean -f &&
fill 1 2 3 4 5 7 8 >one &&
if git checkout renamer
then
echo Not happy
false
else
echo "happy - failed correctly"
fi &&
git checkout -m renamer &&
fill 1 3 4 5 7 8 >expect &&
test_cmp expect uno &&
! test -f one &&
git diff --cached >current &&
! test -s current
'
test_expect_success 'checkout -m with merge conflict' '
git checkout -f master && git clean -f &&
fill 1 T 3 4 5 6 S 8 >one &&
if git checkout renamer
then
echo Not happy
false
else
echo "happy - failed correctly"
fi &&
git checkout -m renamer &&
git diff master:one :3:uno |
sed -e "1,/^@@/d" -e "/^ /d" -e "s/^-/d/" -e "s/^+/a/" >current &&
fill d2 aT d7 aS >expect &&
test_cmp current expect &&
git diff --cached two >current &&
! test -s current
'
test_expect_success 'checkout to detach HEAD' '
git checkout -f renamer && git clean -f &&
git checkout renamer^ 2>messages &&
(cat >messages.expect <<EOF
Note: moving to "renamer^" which isn'"'"'t a local branch
If you want to create a new branch from this checkout, you may do so
(now or later) by using -b with the checkout command again. Example:
git checkout -b <new_branch_name>
HEAD is now at 7329388... Initial A one, A two
EOF
) &&
test_cmp messages.expect messages &&
H=$(git rev-parse --verify HEAD) &&
M=$(git show-ref -s --verify refs/heads/master) &&
test "z$H" = "z$M" &&
if git symbolic-ref HEAD >/dev/null 2>&1
then
echo "OOPS, HEAD is still symbolic???"
false
else
: happy
fi
'
test_expect_success 'checkout to detach HEAD with branchname^' '
git checkout -f master && git clean -f &&
git checkout renamer^ &&
H=$(git rev-parse --verify HEAD) &&
M=$(git show-ref -s --verify refs/heads/master) &&
test "z$H" = "z$M" &&
if git symbolic-ref HEAD >/dev/null 2>&1
then
echo "OOPS, HEAD is still symbolic???"
false
else
: happy
fi
'
test_expect_success 'checkout to detach HEAD with :/message' '
git checkout -f master && git clean -f &&
git checkout ":/Initial" &&
H=$(git rev-parse --verify HEAD) &&
M=$(git show-ref -s --verify refs/heads/master) &&
test "z$H" = "z$M" &&
if git symbolic-ref HEAD >/dev/null 2>&1
then
echo "OOPS, HEAD is still symbolic???"
false
else
: happy
fi
'
test_expect_success 'checkout to detach HEAD with HEAD^0' '
git checkout -f master && git clean -f &&
git checkout HEAD^0 &&
H=$(git rev-parse --verify HEAD) &&
M=$(git show-ref -s --verify refs/heads/master) &&
test "z$H" = "z$M" &&
if git symbolic-ref HEAD >/dev/null 2>&1
then
echo "OOPS, HEAD is still symbolic???"
false
else
: happy
fi
'
test_expect_success 'checkout with ambiguous tag/branch names' '
git tag both side &&
git branch both master &&
git reset --hard &&
git checkout master &&
git checkout both &&
H=$(git rev-parse --verify HEAD) &&
M=$(git show-ref -s --verify refs/heads/master) &&
test "z$H" = "z$M" &&
name=$(git symbolic-ref HEAD 2>/dev/null) &&
test "z$name" = zrefs/heads/both
'
test_expect_success 'checkout with ambiguous tag/branch names' '
git reset --hard &&
git checkout master &&
git tag frotz side &&
git branch frotz master &&
git reset --hard &&
git checkout master &&
git checkout tags/frotz &&
H=$(git rev-parse --verify HEAD) &&
S=$(git show-ref -s --verify refs/heads/side) &&
test "z$H" = "z$S" &&
if name=$(git symbolic-ref HEAD 2>/dev/null)
then
echo "Bad -- should have detached"
false
else
: happy
fi
'
test_expect_success 'switch branches while in subdirectory' '
git reset --hard &&
git checkout master &&
mkdir subs &&
(
cd subs &&
git checkout side
) &&
! test -f subs/one &&
rm -fr subs
'
test_expect_success 'checkout specific path while in subdirectory' '
git reset --hard &&
git checkout side &&
mkdir subs &&
>subs/bero &&
git add subs/bero &&
git commit -m "add subs/bero" &&
git checkout master &&
mkdir -p subs &&
(
cd subs &&
git checkout side -- bero
) &&
test -f subs/bero
'
test_expect_success \
'checkout w/--track sets up tracking' '
git config branch.autosetupmerge false &&
git checkout master &&
git checkout --track -b track1 &&
test "$(git config branch.track1.remote)" &&
test "$(git config branch.track1.merge)"'
test_expect_success \
'checkout w/autosetupmerge=always sets up tracking' '
git config branch.autosetupmerge always &&
git checkout master &&
git checkout -b track2 &&
test "$(git config branch.track2.remote)" &&
test "$(git config branch.track2.merge)"
git config branch.autosetupmerge false'
test_expect_success \
'checkout w/--track from non-branch HEAD fails' '
git checkout -b delete-me master &&
rm .git/refs/heads/delete-me &&
test refs/heads/delete-me = "$(git symbolic-ref HEAD)" &&
test_must_fail git checkout --track -b track'
test_expect_success 'checkout an unmerged path should fail' '
rm -f .git/index &&
O=$(echo original | git hash-object -w --stdin) &&
A=$(echo ourside | git hash-object -w --stdin) &&
B=$(echo theirside | git hash-object -w --stdin) &&
(
echo "100644 $A 0 fild" &&
echo "100644 $O 1 file" &&
echo "100644 $A 2 file" &&
echo "100644 $B 3 file" &&
echo "100644 $A 0 filf"
) | git update-index --index-info &&
echo "none of the above" >sample &&
cat sample >fild &&
cat sample >file &&
cat sample >filf &&
test_must_fail git checkout fild file filf &&
test_cmp sample fild &&
test_cmp sample filf &&
test_cmp sample file
'
test_expect_success 'failing checkout -b should not break working tree' '
git reset --hard master &&
git symbolic-ref HEAD refs/heads/master &&
test_must_fail git checkout -b renamer side^ &&
test $(git symbolic-ref HEAD) = refs/heads/master &&
git diff --exit-code &&
git diff --cached --exit-code
'
test_done