#!/bin/sh

test_description='remote tracking stats'

. ./test-lib.sh

advance () {
        echo "$1" >"$1" &&
        git add "$1" &&
        test_tick &&
        git commit -m "$1"
}

test_expect_success setup '
        for i in a b c;
        do
                advance $i || break
        done &&
        git clone . test &&
        (
                cd test &&
                git checkout -b b1 origin &&
                git reset --hard HEAD^ &&
                advance d &&
                git checkout -b b2 origin &&
                git reset --hard b1 &&
                git checkout -b b3 origin &&
                git reset --hard HEAD^ &&
                git checkout -b b4 origin &&
                advance e &&
                advance f &&
                git checkout -b brokenbase origin &&
                git checkout -b b5 --track brokenbase &&
                advance g &&
                git branch -d brokenbase &&
                git checkout -b b6 origin
        ) &&
        git checkout -b follower --track master &&
        advance h
'

script='s/^..\(b.\)[     0-9a-f]*\[\([^]]*\)\].*/\1 \2/p'
cat >expect <<\EOF
b1 ahead 1, behind 1
b2 ahead 1, behind 1
b3 behind 1
b4 ahead 2
EOF

test_expect_success 'branch -v' '
        (
                cd test &&
                git branch -v
        ) |
        sed -n -e "$script" >actual &&
        test_i18ncmp expect actual
'

cat >expect <<\EOF
b1 origin/master: ahead 1, behind 1
b2 origin/master: ahead 1, behind 1
b3 origin/master: behind 1
b4 origin/master: ahead 2
b5 brokenbase: gone
b6 origin/master
EOF

test_expect_success 'branch -vv' '
        (
                cd test &&
                git branch -vv
        ) |
        sed -n -e "$script" >actual &&
        test_i18ncmp expect actual
'

test_expect_success 'checkout (diverged from upstream)' '
        (
                cd test && git checkout b1
        ) >actual &&
        test_i18ngrep "have 1 and 1 different" actual
'

test_expect_success 'checkout with local tracked branch' '
        git checkout master &&
        git checkout follower >actual &&
        test_i18ngrep "is ahead of" actual
'

test_expect_success 'checkout (upstream is gone)' '
        (
                cd test &&
                git checkout b5
        ) >actual &&
        test_i18ngrep "is based on .*, but the upstream is gone." actual
'

test_expect_success 'checkout (up-to-date with upstream)' '
        (
                cd test && git checkout b6
        ) >actual &&
        test_i18ngrep "Your branch is up-to-date with .origin/master" actual
'

test_expect_success 'status (diverged from upstream)' '
        (
                cd test &&
                git checkout b1 >/dev/null &&
                # reports nothing to commit
                test_must_fail git commit --dry-run
        ) >actual &&
        test_i18ngrep "have 1 and 1 different" actual
'

test_expect_success 'status (upstream is gone)' '
        (
                cd test &&
                git checkout b5 >/dev/null &&
                # reports nothing to commit
                test_must_fail git commit --dry-run
        ) >actual &&
        test_i18ngrep "is based on .*, but the upstream is gone." actual
'

test_expect_success 'status (up-to-date with upstream)' '
        (
                cd test &&
                git checkout b6 >/dev/null &&
                # reports nothing to commit
                test_must_fail git commit --dry-run
        ) >actual &&
        test_i18ngrep "Your branch is up-to-date with .origin/master" actual
'

cat >expect <<\EOF
## b1...origin/master [ahead 1, behind 1]
EOF

test_expect_success 'status -s -b (diverged from upstream)' '
        (
                cd test &&
                git checkout b1 >/dev/null &&
                git status -s -b | head -1
        ) >actual &&
        test_i18ncmp expect actual
'

cat >expect <<\EOF
## b5...brokenbase [gone]
EOF

test_expect_success 'status -s -b (upstream is gone)' '
        (
                cd test &&
                git checkout b5 >/dev/null &&
                git status -s -b | head -1
        ) >actual &&
        test_i18ncmp expect actual
'

cat >expect <<\EOF
## b6...origin/master
EOF

test_expect_success 'status -s -b (up-to-date with upstream)' '
        (
                cd test &&
                git checkout b6 >/dev/null &&
                git status -s -b | head -1
        ) >actual &&
        test_i18ncmp expect actual
'

test_expect_success 'fail to track lightweight tags' '
        git checkout master &&
        git tag light &&
        test_must_fail git branch --track lighttrack light >actual &&
        test_i18ngrep ! "set up to track" actual &&
        test_must_fail git checkout lighttrack
'

test_expect_success 'fail to track annotated tags' '
        git checkout master &&
        git tag -m heavy heavy &&
        test_must_fail git branch --track heavytrack heavy >actual &&
        test_i18ngrep ! "set up to track" actual &&
        test_must_fail git checkout heavytrack
'

test_expect_success 'setup tracking with branch --set-upstream on existing branch' '
        git branch from-master master &&
        test_must_fail git config branch.from-master.merge > actual &&
        git branch --set-upstream from-master master &&
        git config branch.from-master.merge > actual &&
        grep -q "^refs/heads/master$" actual
'

test_expect_success '--set-upstream does not change branch' '
        git branch from-master2 master &&
        test_must_fail git config branch.from-master2.merge > actual &&
        git rev-list from-master2 &&
        git update-ref refs/heads/from-master2 from-master2^ &&
        git rev-parse from-master2 >expect2 &&
        git branch --set-upstream from-master2 master &&
        git config branch.from-master.merge > actual &&
        git rev-parse from-master2 >actual2 &&
        grep -q "^refs/heads/master$" actual &&
        cmp expect2 actual2
'

test_expect_success '--set-upstream @{-1}' '
        git checkout from-master &&
        git checkout from-master2 &&
        git config branch.from-master2.merge > expect2 &&
        git branch --set-upstream @{-1} follower &&
        git config branch.from-master.merge > actual &&
        git config branch.from-master2.merge > actual2 &&
        git branch --set-upstream from-master follower &&
        git config branch.from-master.merge > expect &&
        test_cmp expect2 actual2 &&
        test_cmp expect actual
'

test_done