#!/bin/sh

test_description='git-filter-branch'
. ./test-lib.sh

make_commit () {
        lower=$(echo $1 | tr A-Z a-z)
        echo $lower > $lower
        git add $lower
        test_tick
        git commit -m $1
        git tag $1
}

test_expect_success 'setup' '
        make_commit A
        make_commit B
        git checkout -b branch B
        make_commit D
        make_commit E
        git checkout master
        make_commit C
        git checkout branch
        git merge C
        git tag F
        make_commit G
        make_commit H
'

H=$(git-rev-parse H)

test_expect_success 'rewrite identically' '
        git-filter-branch H2
'

test_expect_success 'result is really identical' '
        test $H = $(git-rev-parse H2)
'

test_expect_success 'rewrite, renaming a specific file' '
        git-filter-branch --tree-filter "mv d doh || :" H3
'

test_expect_success 'test that the file was renamed' '
        test d = $(git show H3:doh)
'

git tag oldD H3~4
test_expect_success 'rewrite one branch, keeping a side branch' '
        git-filter-branch --tree-filter "mv b boh || :" modD D..oldD
'

test_expect_success 'common ancestor is still common (unchanged)' '
        test "$(git-merge-base modD D)" = "$(git-rev-parse B)"
'

test_done