#!/bin/sh

test_description='Undo external modifications of the stack'

. ./test-lib.sh

# Ignore our own output files.
cat > .git/info/exclude <<EOF
/expected.txt
/head?.txt
EOF

test_expect_success 'Initialize StGit stack' '
    stg init &&
    echo 000 >> a &&
    stg add a &&
    git commit -m p0 &&
    echo 111 >> a &&
    stg add a &&
    git commit -m p1 &&
    stg uncommit -n 1
'

cat > expected.txt <<EOF
000
111
222
EOF
test_expect_success 'Make a git commit and turn it into a patch' '
    git rev-parse HEAD > head0.txt &&
    echo 222 >> a &&
    stg add a &&
    git commit -m p2 &&
    git rev-parse HEAD > head1.txt &&
    stg repair &&
    test "$(echo $(stg series))" = "+ p1 > p2" &&
    test_cmp expected.txt a
'

cat > expected.txt <<EOF
000
111
222
EOF
test_expect_success 'Undo the patchification' '
    stg undo &&
    git rev-parse HEAD > head2.txt &&
    test_cmp head1.txt head2.txt &&
    test "$(echo $(stg series))" = "> p1" &&
    test_cmp expected.txt a
'

cat > expected.txt <<EOF
000
111
EOF
test_expect_success 'Undo the commit' '
    stg undo &&
    git rev-parse HEAD > head3.txt &&
    test_cmp head0.txt head3.txt &&
    test "$(echo $(stg series))" = "> p1" &&
    test_cmp expected.txt a
'

test_done