#!/bin/sh
#
# Copyright (c) 2005 Amos Waterland
#

test_description='git rebase should not destroy author information

This test runs git rebase and checks that the author information is not lost.
'
. ./test-lib.sh

export GIT_AUTHOR_EMAIL=bogus_email_address

test_expect_success \
    'prepare repository with topic branches' \
    'echo First > A &&
     git update-index --add A &&
     git-commit -m "Add A." &&
     git checkout -b my-topic-branch &&
     echo Second > B &&
     git update-index --add B &&
     git-commit -m "Add B." &&
     git checkout -f master &&
     echo Third >> A &&
     git update-index A &&
     git-commit -m "Modify A." &&
     git checkout -b side my-topic-branch &&
     echo Side >> C &&
     git add C &&
     git commit -m "Add C" &&
     git checkout -b nonlinear my-topic-branch &&
     echo Edit >> B &&
     git add B &&
     git commit -m "Modify B" &&
     git merge side &&
     git checkout -b upstream-merged-nonlinear &&
     git merge master &&
     git checkout -f my-topic-branch &&
     git tag topic
'

test_expect_success 'rebase against master' '
     git rebase master'

test_expect_failure \
    'the rebase operation should not have destroyed author information' \
    'git log | grep "Author:" | grep "<>"'

test_expect_success 'rebase after merge master' '
     git reset --hard topic &&
     git merge master &&
     git rebase master &&
     ! git show | grep "^Merge:"
'

test_expect_success 'rebase of history with merges is linearized' '
     git checkout nonlinear &&
     test 4 = $(git rev-list master.. | wc -l) &&
     git rebase master &&
     test 3 = $(git rev-list master.. | wc -l)
'

test_expect_success \
    'rebase of history with merges after upstream merge is linearized' '
     git checkout upstream-merged-nonlinear &&
     test 5 = $(git rev-list master.. | wc -l) &&
     git rebase master &&
     test 3 = $(git rev-list master.. | wc -l)
'

test_done