#!/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
        )
'

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 - repository to add submodules to' '
        git init addtest &&
        git init addtest-ignore
'

# The 'submodule add' tests need some repository to add as a submodule.
# The trash directory is a good one as any. We need to canonicalize
# the name, though, as some tests compare it to the absolute path git
# generates, which will expand symbolic links.
submodurl=$(pwd -P)

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

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

        (
                cd "$dir" &&
                listbranches >"$dotdot/heads" &&
                { git symbolic-ref HEAD || :; } >"$dotdot/head" &&
                git rev-parse HEAD >"$dotdot/head-sha1" &&
                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 -q "$submodurl" submod >actual &&
                test ! -s actual &&
                echo "gitdir: ../.git/modules/submod" >expect &&
                test_cmp expect submod/.git &&
                (
                        cd submod &&
                        git config core.worktree >actual &&
                        echo "../../../submod" >expect &&
                        test_cmp expect actual &&
                        rm -f actual expect
                ) &&
                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 to .gitignored path fails' '
        (
                cd addtest-ignore &&
                cat <<-\EOF >expect &&
                The following path is ignored by one of your .gitignore files:
                submod
                Use -f if you really want to add it.
                EOF
                # Does not use test_commit due to the ignore
                echo "*" > .gitignore &&
                git add --force .gitignore &&
                git commit -m"Ignore everything" &&
                ! git submodule add "$submodurl" submod >actual 2>&1 &&
                test_i18ncmp expect actual
        )
'

test_expect_success 'submodule add to .gitignored path with --force' '
        (
                cd addtest-ignore &&
                git submodule add --force "$submodurl" submod
        )
'

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

test_expect_success 'status should fail for unmapped paths' '
        test_must_fail git submodule status
'

test_expect_success 'setup - map path in .gitmodules' '
        cat <<\EOF >expect &&
[submodule "example"]
        url = git://example.com/init.git
        path = init
EOF

        GIT_CONFIG=.gitmodules git config submodule.example.path init &&

        test_cmp expect .gitmodules
'

test_expect_success 'status should only print one line' '
        git submodule status >lines &&
        test_line_count = 1 lines
'

test_expect_success 'setup - fetch commit name from submodule' '
        rev1=$(cd .subrepo && git rev-parse HEAD) &&
        printf "rev1: %s\n" "$rev1" &&
        test -n "$rev1"
'

test_expect_success 'status should initially be "missing"' '
        git submodule status >lines &&
        grep "^-$rev1" lines
'

test_expect_success 'init should register submodule url in .git/config' '
        echo git://example.com/init.git >expect &&

        git submodule init &&
        git config submodule.example.url >url &&
        git config submodule.example.url ./.subrepo &&

        test_cmp expect url
'

test_expect_success 'update should fail when path is used by a file' '
        echo hello >expect &&

        echo "hello" >init &&
        test_must_fail git submodule update &&

        test_cmp expect init
'

test_expect_success 'update should fail when path is used by a nonempty directory' '
        echo hello >expect &&

        rm -fr init &&
        mkdir init &&
        echo "hello" >init/a &&

        test_must_fail git submodule update &&

        test_cmp expect init/a
'

test_expect_success 'update should work when path is an empty dir' '
        rm -fr init &&
        rm -f head-sha1 &&
        echo "$rev1" >expect &&

        mkdir init &&
        git submodule update -q >update.out &&
        test ! -s update.out &&

        inspect init &&
        test_cmp expect head-sha1
'

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

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=$(cd init && git rev-parse HEAD) &&
        test -n "$rev2" &&
        git submodule status >list &&

        grep "^+$rev2" list
'

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

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

test_expect_success 'update should checkout rev1' '
        rm -f head-sha1 &&
        echo "$rev1" >expect &&

        git submodule update init &&
        inspect init &&

        test_cmp expect head-sha1
'

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

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

test_expect_success 'apply submodule diff' '
        >empty &&

        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 &&

        git diff --cached master >staged &&
        test_cmp empty staged
'

test_expect_success 'update --init' '
        mv init init2 &&
        git config -f .gitmodules submodule.example.url "$(pwd)/init2" &&
        git config --remove-section submodule.example &&
        test_must_fail git config submodule.example.url &&

        git submodule update init > update.out &&
        cat update.out &&
        test_i18ngrep "not initialized" update.out &&
        test_must_fail git rev-parse --resolve-git-dir init/.git &&

        git submodule update --init init &&
        git rev-parse --resolve-git-dir 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"
        ) &&
        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_expect_success 'add should fail when path is used by a file' '
        (
                cd addtest &&
                touch file &&
                test_must_fail  git submodule add "$submodurl/repo" file
        )
'

test_expect_success 'add should fail when path is used by an existing directory' '
        (
                cd addtest &&
                mkdir empty-dir &&
                test_must_fail git submodule add "$submodurl/repo" empty-dir
        )
'

test_expect_success 'use superproject as upstream when path is relative and no url is set there' '
        (
                cd addtest &&
                git submodule add ../repo relative &&
                test "$(git config -f .gitmodules submodule.relative.url)" = ../repo &&
                git submodule sync relative &&
                test "$(git config submodule.relative.url)" = "$submodurl/repo"
        )
'

test_expect_success 'set up for relative path tests' '
        mkdir reltest &&
        (
                cd reltest &&
                git init &&
                mkdir sub &&
                (
                        cd sub &&
                        git init &&
                        test_commit foo
                ) &&
                git add sub &&
                git config -f .gitmodules submodule.sub.path sub &&
                git config -f .gitmodules submodule.sub.url ../subrepo &&
                cp .git/config pristine-.git-config
        )
'

test_expect_success 'relative path works with URL' '
        (
                cd reltest &&
                cp pristine-.git-config .git/config &&
                git config remote.origin.url ssh://hostname/repo &&
                git submodule init &&
                test "$(git config submodule.sub.url)" = ssh://hostname/subrepo
        )
'

test_expect_success 'relative path works with user@host:path' '
        (
                cd reltest &&
                cp pristine-.git-config .git/config &&
                git config remote.origin.url user@host:repo &&
                git submodule init &&
                test "$(git config submodule.sub.url)" = user@host:subrepo
        )
'

test_expect_success 'moving the superproject does not break submodules' '
        (
                cd addtest &&
                git submodule status >expect
        )
        mv addtest addtest2 &&
        (
                cd addtest2 &&
                git submodule status >actual &&
                test_cmp expect actual
        )
'

test_done