#!/bin/sh
#
# Copyright (c) 2007 Lars Hjemli
#

test_description='Basic porcelain support for submodules

This test tries to verify basic sanity of the init, update and status
subcommands of git submodule.
'

. ./test-lib.sh

test_expect_success 'setup - initial commit' '
        >t &&
        git add t &&
        git commit -m "initial commit" &&
        git branch initial
'

test_expect_success 'setup - repository in init subdirectory' '
        mkdir init &&
        (
                cd init &&
                git init &&
                echo a >a &&
                git add a &&
                git commit -m "submodule commit 1" &&
                git tag -a -m "rev-1" rev-1
        )
        rev1=$(cd init && git rev-parse HEAD) &&
        printf "rev1: %s\n" "$rev1" &&
        test -n "$rev1"
'

test_expect_success 'setup - commit with gitlink' '
        echo a >a &&
        echo z >z &&
        git add a init z &&
        git commit -m "super commit 1"
'

test_expect_success 'setup - hide init subdirectory' '
        mv init .subrepo
'

test_expect_success 'setup - add an example entry to .gitmodules' '
        GIT_CONFIG=.gitmodules \
        git config submodule.example.url git://example.com/init.git
'

test_expect_success 'setup - repository to add submodules to' '
        git init addtest
'

# The 'submodule add' tests need some repository to add as a submodule.
# The trash directory is a good one as any.
submodurl=$TRASH_DIRECTORY

listbranches() {
        git for-each-ref --format='%(refname)' 'refs/heads/*'
}

inspect() {
        dir=$1 &&
        dotdot="${2:-..}" &&

        (
                cd "$dir" &&
                listbranches >"$dotdot/heads" &&
                { git symbolic-ref HEAD || :; } >"$dotdot/head" &&
                git update-index --refresh &&
                git diff-files --exit-code &&
                git clean -n -d -x >"$dotdot/untracked"
        )
}

test_expect_success 'submodule add' '
        echo "refs/heads/master" >expect &&
        >empty &&

        (
                cd addtest &&
                git submodule add "$submodurl" submod &&
                git submodule init
        ) &&

        rm -f heads head untracked &&
        inspect addtest/submod ../.. &&
        test_cmp expect heads &&
        test_cmp expect head &&
        test_cmp empty untracked
'

test_expect_success 'submodule add --branch' '
        echo "refs/heads/initial" >expect-head &&
        cat <<-\EOF >expect-heads &&
        refs/heads/initial
        refs/heads/master
        EOF
        >empty &&

        (
                cd addtest &&
                git submodule add -b initial "$submodurl" submod-branch &&
                git submodule init
        ) &&

        rm -f heads head untracked &&
        inspect addtest/submod-branch ../.. &&
        test_cmp expect-heads heads &&
        test_cmp expect-head head &&
        test_cmp empty untracked
'

test_expect_success 'submodule add with ./ in path' '
        echo "refs/heads/master" >expect &&
        >empty &&

        (
                cd addtest &&
                git submodule add "$submodurl" ././dotsubmod/./frotz/./ &&
                git submodule init
        ) &&

        rm -f heads head untracked &&
        inspect addtest/dotsubmod/frotz ../../.. &&
        test_cmp expect heads &&
        test_cmp expect head &&
        test_cmp empty untracked
'

test_expect_success 'submodule add with // in path' '
        echo "refs/heads/master" >expect &&
        >empty &&

        (
                cd addtest &&
                git submodule add "$submodurl" slashslashsubmod///frotz// &&
                git submodule init
        ) &&

        rm -f heads head untracked &&
        inspect addtest/slashslashsubmod/frotz ../../.. &&
        test_cmp expect heads &&
        test_cmp expect head &&
        test_cmp empty untracked
'

test_expect_success 'submodule add with /.. in path' '
        echo "refs/heads/master" >expect &&
        >empty &&

        (
                cd addtest &&
                git submodule add "$submodurl" dotdotsubmod/../realsubmod/frotz/.. &&
                git submodule init
        ) &&

        rm -f heads head untracked &&
        inspect addtest/realsubmod ../.. &&
        test_cmp expect heads &&
        test_cmp expect head &&
        test_cmp empty untracked
'

test_expect_success 'submodule add with ./, /.. and // in path' '
        echo "refs/heads/master" >expect &&
        >empty &&

        (
                cd addtest &&
                git submodule add "$submodurl" dot/dotslashsubmod/./../..////realsubmod2/a/b/c/d/../../../../frotz//.. &&
                git submodule init
        ) &&

        rm -f heads head untracked &&
        inspect addtest/realsubmod2 ../.. &&
        test_cmp expect heads &&
        test_cmp expect head &&
        test_cmp empty untracked
'

test_expect_success 'status should fail for unmapped paths' '
        if git submodule status
        then
                echo "[OOPS] submodule status succeeded"
                false
        elif ! GIT_CONFIG=.gitmodules git config submodule.example.path init
        then
                echo "[OOPS] git config failed to update .gitmodules"
                false
        fi
'

test_expect_success 'status should only print one line' '
        lines=$(git submodule status | wc -l) &&
        test $lines = 1
'

test_expect_success 'status should initially be "missing"' '
        git submodule status | grep "^-$rev1"
'

test_expect_success 'init should register submodule url in .git/config' '
        git submodule init &&
        url=$(git config submodule.example.url) &&
        if test "$url" != "git://example.com/init.git"
        then
                echo "[OOPS] init succeeded but submodule url is wrong"
                false
        elif test_must_fail git config submodule.example.url ./.subrepo
        then
                echo "[OOPS] init succeeded but update of url failed"
                false
        fi
'

test_expect_success 'update should fail when path is used by a file' '
        echo "hello" >init &&
        if git submodule update
        then
                echo "[OOPS] update should have failed"
                false
        elif test "$(cat init)" != "hello"
        then
                echo "[OOPS] update failed but init file was molested"
                false
        else
                rm init
        fi
'

test_expect_success 'update should fail when path is used by a nonempty directory' '
        mkdir init &&
        echo "hello" >init/a &&
        if git submodule update
        then
                echo "[OOPS] update should have failed"
                false
        elif test "$(cat init/a)" != "hello"
        then
                echo "[OOPS] update failed but init/a was molested"
                false
        else
                rm init/a
        fi
'

test_expect_success 'update should work when path is an empty dir' '
        rm -rf init &&
        mkdir init &&
        git submodule update &&
        head=$(cd init && git rev-parse HEAD) &&
        if test -z "$head"
        then
                echo "[OOPS] Failed to obtain submodule head"
                false
        elif test "$head" != "$rev1"
        then
                echo "[OOPS] Submodule head is $head but should have been $rev1"
                false
        fi
'

test_expect_success 'status should be "up-to-date" after update' '
        git submodule status | grep "^ $rev1"
'

test_expect_success 'status should be "modified" after submodule commit' '
        cd init &&
        echo b >b &&
        git add b &&
        git commit -m "submodule commit 2" &&
        rev2=$(git rev-parse HEAD) &&
        cd .. &&
        if test -z "$rev2"
        then
                echo "[OOPS] submodule git rev-parse returned nothing"
                false
        fi &&
        git submodule status | grep "^+$rev2"
'

test_expect_success 'the --cached sha1 should be rev1' '
        git submodule --cached status | grep "^+$rev1"
'

test_expect_success 'git diff should report the SHA1 of the new submodule commit' '
        git diff | grep "^+Subproject commit $rev2"
'

test_expect_success 'update should checkout rev1' '
        git submodule update init &&
        head=$(cd init && git rev-parse HEAD) &&
        if test -z "$head"
        then
                echo "[OOPS] submodule git rev-parse returned nothing"
                false
        elif test "$head" != "$rev1"
        then
                echo "[OOPS] init did not checkout correct head"
                false
        fi
'

test_expect_success 'status should be "up-to-date" after update' '
        git submodule status | grep "^ $rev1"
'

test_expect_success 'checkout superproject with subproject already present' '
        git checkout initial &&
        git checkout master
'

test_expect_success 'apply submodule diff' '
        git branch second &&
        (
                cd init &&
                echo s >s &&
                git add s &&
                git commit -m "change subproject"
        ) &&
        git update-index --add init &&
        git commit -m "change init" &&
        git format-patch -1 --stdout >P.diff &&
        git checkout second &&
        git apply --index P.diff &&
        D=$(git diff --cached master) &&
        test -z "$D"
'

test_expect_success 'update --init' '

        mv init init2 &&
        git config -f .gitmodules submodule.example.url "$(pwd)/init2" &&
        git config --remove-section submodule.example
        git submodule update init > update.out &&
        grep "not initialized" update.out &&
        test ! -d init/.git &&
        git submodule update --init init &&
        test -d init/.git

'

test_expect_success 'do not add files from a submodule' '

        git reset --hard &&
        test_must_fail git add init/a

'

test_expect_success 'gracefully add submodule with a trailing slash' '

        git reset --hard &&
        git commit -m "commit subproject" init &&
        (cd init &&
         echo b > a) &&
        git add init/ &&
        git diff --exit-code --cached init &&
        commit=$(cd init &&
         git commit -m update a >/dev/null &&
         git rev-parse HEAD) &&
        git add init/ &&
        test_must_fail git diff --exit-code --cached init &&
        test $commit = $(git ls-files --stage |
                sed -n "s/^160000 \([^ ]*\).*/\1/p")

'

test_expect_success 'ls-files gracefully handles trailing slash' '

        test "init" = "$(git ls-files init/)"

'

test_expect_success 'moving to a commit without submodule does not leave empty dir' '
        rm -rf init &&
        mkdir init &&
        git reset --hard &&
        git checkout initial &&
        test ! -d init &&
        git checkout second
'

test_expect_success 'submodule <invalid-path> warns' '

        git submodule no-such-submodule 2> output.err &&
        grep "^error: .*no-such-submodule" output.err

'

test_expect_success 'add submodules without specifying an explicit path' '
        mkdir repo &&
        cd repo &&
        git init &&
        echo r >r &&
        git add r &&
        git commit -m "repo commit 1" &&
        cd .. &&
        git clone --bare repo/ bare.git &&
        cd addtest &&
        git submodule add "$submodurl/repo" &&
        git config -f .gitmodules submodule.repo.path repo &&
        git submodule add "$submodurl/bare.git" &&
        git config -f .gitmodules submodule.bare.path bare
'

test_done