#!/bin/sh

test_description='git am handling submodules'

. ./test-lib.sh
. "$TEST_DIRECTORY"/lib-submodule-update.sh

am () {
        git format-patch --stdout --ignore-submodules=dirty "..$1" | git am -
}

test_submodule_switch "am"

am_3way () {
        git format-patch --stdout --ignore-submodules=dirty "..$1" | git am --3way -
}

KNOWN_FAILURE_NOFF_MERGE_ATTEMPTS_TO_MERGE_REMOVED_SUBMODULE_FILES=1
test_submodule_switch "am_3way"

test_expect_success 'setup diff.submodule' '
        test_commit one &&
        INITIAL=$(git rev-parse HEAD) &&

        git init submodule &&
        (
                cd submodule &&
                test_commit two &&
                git rev-parse HEAD >../initial-submodule
        ) &&
        git submodule add ./submodule &&
        git commit -m first &&

        (
                cd submodule &&
                test_commit three &&
                git rev-parse HEAD >../first-submodule
        ) &&
        git add submodule &&
        git commit -m second &&
        SECOND=$(git rev-parse HEAD) &&

        (
                cd submodule &&
                git mv two.t four.t &&
                git commit -m "second submodule" &&
                git rev-parse HEAD >../second-submodule
        ) &&
        test_commit four &&
        git add submodule &&
        git commit --amend --no-edit &&
        THIRD=$(git rev-parse HEAD) &&
        git submodule update --init
'

run_test() {
        START_COMMIT=$1 &&
        EXPECT=$2 &&
        # Abort any merges in progress: the previous
        # test may have failed, and we should clean up.
        test_might_fail git am --abort &&
        git reset --hard $START_COMMIT &&
        rm -f *.patch &&
        git format-patch -1 &&
        git reset --hard $START_COMMIT^ &&
        git submodule update &&
        git am *.patch &&
        git submodule update &&
        git -C submodule rev-parse HEAD >actual &&
        test_cmp $EXPECT actual
}

test_expect_success 'diff.submodule unset' '
        test_unconfig diff.submodule &&
        run_test $SECOND first-submodule
'

test_expect_success 'diff.submodule unset with extra file' '
        test_unconfig diff.submodule &&
        run_test $THIRD second-submodule
'

test_expect_success 'diff.submodule=log' '
        test_config diff.submodule log &&
        run_test $SECOND first-submodule
'

test_expect_success 'diff.submodule=log with extra file' '
        test_config diff.submodule log &&
        run_test $THIRD second-submodule
'

test_done