#!/bin/sh
#
# Copyright (c) 2013 Ramkumar Ramachandra
#

test_description='git rebase --autostash tests'
. ./test-lib.sh

test_expect_success setup '
        echo hello-world >file0 &&
        git add . &&
        test_tick &&
        git commit -m "initial commit" &&
        git checkout -b feature-branch &&
        echo another-hello >file1 &&
        echo goodbye >file2 &&
        git add . &&
        test_tick &&
        git commit -m "second commit" &&
        echo final-goodbye >file3 &&
        git add . &&
        test_tick &&
        git commit -m "third commit" &&
        git checkout -b unrelated-onto-branch master &&
        echo unrelated >file4 &&
        git add . &&
        test_tick &&
        git commit -m "unrelated commit" &&
        git checkout -b related-onto-branch master &&
        echo conflicting-change >file2 &&
        git add . &&
        test_tick &&
        git commit -m "related commit"
'

testrebase() {
        type=$1
        dotest=$2

        test_expect_success "rebase$type: dirty worktree, non-conflicting rebase" '
                test_config rebase.autostash true &&
                git reset --hard &&
                git checkout -b rebased-feature-branch feature-branch &&
                test_when_finished git branch -D rebased-feature-branch &&
                echo dirty >>file3 &&
                git rebase$type unrelated-onto-branch &&
                grep unrelated file4 &&
                grep dirty file3 &&
                git checkout feature-branch
        '

        test_expect_success "rebase$type: dirty index, non-conflicting rebase" '
                test_config rebase.autostash true &&
                git reset --hard &&
                git checkout -b rebased-feature-branch feature-branch &&
                test_when_finished git branch -D rebased-feature-branch &&
                echo dirty >>file3 &&
                git add file3 &&
                git rebase$type unrelated-onto-branch &&
                grep unrelated file4 &&
                grep dirty file3 &&
                git checkout feature-branch
        '

        test_expect_success "rebase$type: conflicting rebase" '
                test_config rebase.autostash true &&
                git reset --hard &&
                git checkout -b rebased-feature-branch feature-branch &&
                test_when_finished git branch -D rebased-feature-branch &&
                echo dirty >>file3 &&
                test_must_fail git rebase$type related-onto-branch &&
                test_path_is_file $dotest/autostash &&
                ! grep dirty file3 &&
                rm -rf $dotest &&
                git reset --hard &&
                git checkout feature-branch
        '

        test_expect_success "rebase$type: --continue" '
                test_config rebase.autostash true &&
                git reset --hard &&
                git checkout -b rebased-feature-branch feature-branch &&
                test_when_finished git branch -D rebased-feature-branch &&
                echo dirty >>file3 &&
                test_must_fail git rebase$type related-onto-branch &&
                test_path_is_file $dotest/autostash &&
                ! grep dirty file3 &&
                echo "conflicting-plus-goodbye" >file2 &&
                git add file2 &&
                git rebase --continue &&
                test_path_is_missing $dotest/autostash &&
                grep dirty file3 &&
                git checkout feature-branch
        '

        test_expect_success "rebase$type: --skip" '
                test_config rebase.autostash true &&
                git reset --hard &&
                git checkout -b rebased-feature-branch feature-branch &&
                test_when_finished git branch -D rebased-feature-branch &&
                echo dirty >>file3 &&
                test_must_fail git rebase$type related-onto-branch &&
                test_path_is_file $dotest/autostash &&
                ! grep dirty file3 &&
                git rebase --skip &&
                test_path_is_missing $dotest/autostash &&
                grep dirty file3 &&
                git checkout feature-branch
        '

        test_expect_success "rebase$type: --abort" '
                test_config rebase.autostash true &&
                git reset --hard &&
                git checkout -b rebased-feature-branch feature-branch &&
                test_when_finished git branch -D rebased-feature-branch &&
                echo dirty >>file3 &&
                test_must_fail git rebase$type related-onto-branch &&
                test_path_is_file $dotest/autostash &&
                ! grep dirty file3 &&
                git rebase --abort &&
                test_path_is_missing $dotest/autostash &&
                grep dirty file3 &&
                git checkout feature-branch
        '

        test_expect_success "rebase$type: non-conflicting rebase, conflicting stash" '
                test_config rebase.autostash true &&
                git reset --hard &&
                git checkout -b rebased-feature-branch feature-branch &&
                test_when_finished git branch -D rebased-feature-branch &&
                echo dirty >file4 &&
                git add file4 &&
                git rebase$type unrelated-onto-branch &&
                test_path_is_missing $dotest &&
                git reset --hard &&
                grep unrelated file4 &&
                ! grep dirty file4 &&
                git checkout feature-branch &&
                git stash pop &&
                grep dirty file4
        '
}

test_expect_success "rebase: fast-forward rebase" '
        test_config rebase.autostash true &&
        git reset --hard &&
        git checkout -b behind-feature-branch feature-branch~1 &&
        test_when_finished git branch -D behind-feature-branch &&
        echo dirty >>file1 &&
        git rebase feature-branch &&
        grep dirty file1 &&
        git checkout feature-branch
'

test_expect_success "rebase: noop rebase" '
        test_config rebase.autostash true &&
        git reset --hard &&
        git checkout -b same-feature-branch feature-branch &&
        test_when_finished git branch -D same-feature-branch &&
        echo dirty >>file1 &&
        git rebase feature-branch &&
        grep dirty file1 &&
        git checkout feature-branch
'

testrebase "" .git/rebase-apply
testrebase " --merge" .git/rebase-merge
testrebase " --interactive" .git/rebase-merge

test_done