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git/t/t7201-co.sh
Shawn Pearce 5a03e7f253 Allow git-checkout when on a non-existant branch.
I've seen some users get into situtations where their HEAD
symbolic-ref is pointing at a non-existant ref.  (Sometimes this
happens during clone when the remote repository lacks a 'master'
branch.)  If this happens the user is unable to use git-checkout
to switch branches as there is no prior commit to merge from.

So instead of giving the user low-level errors about how HEAD
can't be resolved and how not a single revision was given change
the type of checkout to be a force and go through with the user's
request anyway.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-09-27 00:43:50 -07:00

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#!/bin/sh
#
# Copyright (c) 2006 Junio C Hamano
#
test_description='git-checkout tests.'
. ./test-lib.sh
fill () {
for i
do
echo "$i"
done
}
test_expect_success setup '
fill 1 2 3 4 5 >one &&
fill a b c d e >two &&
git add one two &&
git commit -m "Initial A one, A two" &&
git checkout -b side &&
fill 1 2 3 >one &&
fill A B C D E >three &&
rm -f two &&
git update-index --add --remove one two three &&
git commit -m "Side M one, D two, A three" &&
git checkout master
'
test_expect_success "checkout from non-existing branch" '
git checkout -b delete-me master &&
rm .git/refs/heads/delete-me &&
test refs/heads/delete-me = "$(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 >one &&
if git checkout side
then
echo Not happy
false
else
echo "happy - failed correctly"
fi
'
test_expect_success "checkout -m with dirty tree" '
git checkout -f master &&
git clean &&
fill 0 1 2 3 4 5 >one &&
git checkout -m side &&
fill " master" "* side" >expect.branch &&
git branch >current.branch &&
diff expect.branch current.branch &&
fill "M one" "A three" "D two" >expect.master &&
git diff --name-status master >current.master &&
diff expect.master current.master &&
fill "M one" >expect.side &&
git diff --name-status side >current.side &&
diff expect.side current.side &&
: >expect.index &&
git diff --cached >current.index &&
diff expect.index current.index
'
test_done