#!/bin/sh

test_description='Tests rebase performance'
. ./perf-lib.sh

test_perf_default_repo

test_expect_success 'setup rebasing on top of a lot of changes' '
        git checkout -f -b base &&
        git checkout -b to-rebase &&
        git checkout -b upstream &&
        for i in $(seq 100)
        do
                # simulate huge diffs
                echo change$i >unrelated-file$i &&
                seq 1000 >>unrelated-file$i &&
                git add unrelated-file$i &&
                test_tick &&
                git commit -m commit$i unrelated-file$i &&
                echo change$i >unrelated-file$i &&
                seq 1000 | tac >>unrelated-file$i &&
                git add unrelated-file$i &&
                test_tick &&
                git commit -m commit$i-reverse unrelated-file$i ||
                break
        done &&
        git checkout to-rebase &&
        test_commit our-patch interesting-file
'

test_perf 'rebase on top of a lot of unrelated changes' '
        git rebase --onto upstream HEAD^ &&
        git rebase --onto base HEAD^
'

test_expect_success 'setup rebasing many changes without split-index' '
        git config core.splitIndex false &&
        git checkout -b upstream2 to-rebase &&
        git checkout -b to-rebase2 upstream
'

test_perf 'rebase a lot of unrelated changes without split-index' '
        git rebase --onto upstream2 base &&
        git rebase --onto base upstream2
'

test_expect_success 'setup rebasing many changes with split-index' '
        git config core.splitIndex true
'

test_perf 'rebase a lot of unrelated changes with split-index' '
        git rebase --onto upstream2 base &&
        git rebase --onto base upstream2
'

test_done