#!/bin/sh

test_description='test describe

                       B
        .--------------o----o----o----x
       /                   /    /
 o----o----o----o----o----.    /
       \        A    c        /
        .------------o---o---o
                   D,R   e
'
. ./test-lib.sh

check_describe () {
        expect="$1"
        shift
        R=$(git describe "$@" 2>err.actual)
        S=$?
        cat err.actual >&3
        test_expect_success "describe $*" '
        test $S = 0 &&
        case "$R" in
        $expect)        echo happy ;;
        *)      echo "Oops - $R is not $expect";
                false ;;
        esac
        '
}

test_expect_success setup '

        test_tick &&
        echo one >file && git add file && git commit -m initial &&
        one=$(git rev-parse HEAD) &&

        git describe --always HEAD &&

        test_tick &&
        echo two >file && git add file && git commit -m second &&
        two=$(git rev-parse HEAD) &&

        test_tick &&
        echo three >file && git add file && git commit -m third &&

        test_tick &&
        echo A >file && git add file && git commit -m A &&
        test_tick &&
        git tag -a -m A A &&

        test_tick &&
        echo c >file && git add file && git commit -m c &&
        test_tick &&
        git tag c &&

        git reset --hard $two &&
        test_tick &&
        echo B >side && git add side && git commit -m B &&
        test_tick &&
        git tag -a -m B B &&

        test_tick &&
        git merge -m Merged c &&
        merged=$(git rev-parse HEAD) &&

        git reset --hard $two &&
        test_tick &&
        echo D >another && git add another && git commit -m D &&
        test_tick &&
        git tag -a -m D D &&
        test_tick &&
        git tag -a -m R R &&

        test_tick &&
        echo DD >another && git commit -a -m another &&

        test_tick &&
        git tag e &&

        test_tick &&
        echo DDD >another && git commit -a -m "yet another" &&

        test_tick &&
        git merge -m Merged $merged &&

        test_tick &&
        echo X >file && echo X >side && git add file side &&
        git commit -m x

'

check_describe A-* HEAD
check_describe A-* HEAD^
check_describe R-* HEAD^^
check_describe A-* HEAD^^2
check_describe B HEAD^^2^
check_describe R-* HEAD^^^

check_describe c-* --tags HEAD
check_describe c-* --tags HEAD^
check_describe e-* --tags HEAD^^
check_describe c-* --tags HEAD^^2
check_describe B --tags HEAD^^2^
check_describe e --tags HEAD^^^

check_describe heads/master --all HEAD
check_describe tags/c-* --all HEAD^
check_describe tags/e --all HEAD^^^

check_describe B-0-* --long HEAD^^2^
check_describe A-3-* --long HEAD^^2

check_describe c-7-* --tags
check_describe e-3-* --first-parent --tags

test_expect_success 'describe --contains defaults to HEAD without commit-ish' '
        echo "A^0" >expect &&
        git checkout A &&
        test_when_finished "git checkout -" &&
        git describe --contains >actual &&
        test_cmp expect actual
'

: >err.expect
check_describe A --all A^0
test_expect_success 'no warning was displayed for A' '
        test_cmp err.expect err.actual
'

test_expect_success 'rename tag A to Q locally' '
        mv .git/refs/tags/A .git/refs/tags/Q
'
cat - >err.expect <<EOF
warning: tag 'A' is really 'Q' here
EOF
check_describe A-* HEAD
test_expect_success 'warning was displayed for Q' '
        test_i18ncmp err.expect err.actual
'
test_expect_success 'rename tag Q back to A' '
        mv .git/refs/tags/Q .git/refs/tags/A
'

test_expect_success 'pack tag refs' 'git pack-refs'
check_describe A-* HEAD

check_describe "A-*[0-9a-f]" --dirty

test_expect_success 'set-up dirty work tree' '
        echo >>file
'

check_describe "A-*[0-9a-f]-dirty" --dirty

check_describe "A-*[0-9a-f].mod" --dirty=.mod

test_expect_success 'describe --dirty HEAD' '
        test_must_fail git describe --dirty HEAD
'

test_expect_success 'set-up matching pattern tests' '
        git tag -a -m test-annotated test-annotated &&
        echo >>file &&
        test_tick &&
        git commit -a -m "one more" &&
        git tag test1-lightweight &&
        echo >>file &&
        test_tick &&
        git commit -a -m "yet another" &&
        git tag test2-lightweight &&
        echo >>file &&
        test_tick &&
        git commit -a -m "even more"

'

check_describe "test-annotated-*" --match="test-*"

check_describe "test1-lightweight-*" --tags --match="test1-*"

check_describe "test2-lightweight-*" --tags --match="test2-*"

check_describe "test2-lightweight-*" --long --tags --match="test2-*" HEAD^

test_expect_success 'name-rev with exact tags' '
        echo A >expect &&
        tag_object=$(git rev-parse refs/tags/A) &&
        git name-rev --tags --name-only $tag_object >actual &&
        test_cmp expect actual &&

        echo "A^0" >expect &&
        tagged_commit=$(git rev-parse "refs/tags/A^0") &&
        git name-rev --tags --name-only $tagged_commit >actual &&
        test_cmp expect actual
'

test_expect_success 'describe --contains with the exact tags' '
        echo "A^0" >expect &&
        tag_object=$(git rev-parse refs/tags/A) &&
        git describe --contains $tag_object >actual &&
        test_cmp expect actual &&

        echo "A^0" >expect &&
        tagged_commit=$(git rev-parse "refs/tags/A^0") &&
        git describe --contains $tagged_commit >actual &&
        test_cmp expect actual
'

test_done