#!/bin/sh
#
# Copyright (c) 2005 Junio C Hamano
#

# For repeatability, reset the environment to known value.
LANG=C
LC_ALL=C
PAGER=cat
TZ=UTC
export LANG LC_ALL PAGER TZ
EDITOR=:
VISUAL=:
unset AUTHOR_DATE
unset AUTHOR_EMAIL
unset AUTHOR_NAME
unset COMMIT_AUTHOR_EMAIL
unset COMMIT_AUTHOR_NAME
unset GIT_ALTERNATE_OBJECT_DIRECTORIES
unset GIT_AUTHOR_DATE
GIT_AUTHOR_EMAIL=author@example.com
GIT_AUTHOR_NAME='A U Thor'
unset GIT_COMMITTER_DATE
GIT_COMMITTER_EMAIL=committer@example.com
GIT_COMMITTER_NAME='C O Mitter'
unset GIT_DIFF_OPTS
unset GIT_DIR
unset GIT_EXTERNAL_DIFF
unset GIT_INDEX_FILE
unset GIT_OBJECT_DIRECTORY
unset SHA1_FILE_DIRECTORIES
unset SHA1_FILE_DIRECTORY
GIT_MERGE_VERBOSITY=5
export GIT_MERGE_VERBOSITY
export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
export EDITOR VISUAL

case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
        1|2|true)
                echo "* warning: Some tests will not work if GIT_TRACE" \
                        "is set as to trace on STDERR ! *"
                echo "* warning: Please set GIT_TRACE to something" \
                        "other than 1, 2 or true ! *"
                ;;
esac

# Each test should start with something like this, after copyright notices:
#
# test_description='Description of this test...
# This test checks if command xyzzy does the right thing...
# '
# . ./test-lib.sh

error () {
        echo "* error: $*"
        trap - exit
        exit 1
}

say () {
        echo "* $*"
}

test "${test_description}" != "" ||
error "Test script did not set test_description."

while test "$#" -ne 0
do
        case "$1" in
        -d|--d|--de|--deb|--debu|--debug)
                debug=t; shift ;;
        -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
                immediate=t; shift ;;
        -h|--h|--he|--hel|--help)
                echo "$test_description"
                exit 0 ;;
        -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
                verbose=t; shift ;;
        --no-python)
                # noop now...
                shift ;;
        *)
                break ;;
        esac
done

exec 5>&1
if test "$verbose" = "t"
then
        exec 4>&2 3>&1
else
        exec 4>/dev/null 3>/dev/null
fi

test_failure=0
test_count=0

trap 'echo >&5 "FATAL: Unexpected exit with code $?"; exit 1' exit

test_tick () {
        if test -z "${test_tick+set}"
        then
                test_tick=1112911993
        else
                test_tick=$(($test_tick + 60))
        fi
        GIT_COMMITTER_DATE="$test_tick -0700"
        GIT_AUTHOR_DATE="$test_tick -0700"
        export GIT_COMMITTER_DATE GIT_AUTHOR_DATE
}

# You are not expected to call test_ok_ and test_failure_ directly, use
# the text_expect_* functions instead.

test_ok_ () {
        test_count=$(expr "$test_count" + 1)
        say "  ok $test_count: $@"
}

test_failure_ () {
        test_count=$(expr "$test_count" + 1)
        test_failure=$(expr "$test_failure" + 1);
        say "FAIL $test_count: $1"
        shift
        echo "$@" | sed -e 's/^/        /'
        test "$immediate" = "" || { trap - exit; exit 1; }
}


test_debug () {
        test "$debug" = "" || eval "$1"
}

test_run_ () {
        eval >&3 2>&4 "$1"
        eval_ret="$?"
        return 0
}

test_skip () {
        this_test=$(expr "./$0" : '.*/\(t[0-9]*\)-[^/]*$')
        this_test="$this_test.$(expr "$test_count" + 1)"
        to_skip=
        for skp in $GIT_SKIP_TESTS
        do
                case "$this_test" in
                $skp)
                        to_skip=t
                esac
        done
        case "$to_skip" in
        t)
                say >&3 "skipping test: $@"
                test_count=$(expr "$test_count" + 1)
                say "skip $test_count: $1"
                : true
                ;;
        *)
                false
                ;;
        esac
}

test_expect_failure () {
        test "$#" = 2 ||
        error "bug in the test script: not 2 parameters to test-expect-failure"
        if ! test_skip "$@"
        then
                say >&3 "expecting failure: $2"
                test_run_ "$2"
                if [ "$?" = 0 -a "$eval_ret" != 0 -a "$eval_ret" -lt 129 ]
                then
                        test_ok_ "$1"
                else
                        test_failure_ "$@"
                fi
        fi
        echo >&3 ""
}

test_expect_success () {
        test "$#" = 2 ||
        error "bug in the test script: not 2 parameters to test-expect-success"
        if ! test_skip "$@"
        then
                say >&3 "expecting success: $2"
                test_run_ "$2"
                if [ "$?" = 0 -a "$eval_ret" = 0 ]
                then
                        test_ok_ "$1"
                else
                        test_failure_ "$@"
                fi
        fi
        echo >&3 ""
}

test_expect_code () {
        test "$#" = 3 ||
        error "bug in the test script: not 3 parameters to test-expect-code"
        if ! test_skip "$@"
        then
                say >&3 "expecting exit code $1: $3"
                test_run_ "$3"
                if [ "$?" = 0 -a "$eval_ret" = "$1" ]
                then
                        test_ok_ "$2"
                else
                        test_failure_ "$@"
                fi
        fi
        echo >&3 ""
}

# Most tests can use the created repository, but some amy need to create more.
# Usage: test_create_repo <directory>
test_create_repo () {
        test "$#" = 1 ||
        error "bug in the test script: not 1 parameter to test-create-repo"
        owd=`pwd`
        repo="$1"
        mkdir "$repo"
        cd "$repo" || error "Cannot setup test environment"
        "$GIT_EXEC_PATH/git" init --template=$GIT_EXEC_PATH/templates/blt/ >/dev/null 2>&1 ||
        error "cannot run git init -- have you built things yet?"
        mv .git/hooks .git/hooks-disabled
        cd "$owd"
}
        
test_done () {
        trap - exit
        case "$test_failure" in
        0)
                # We could:
                # cd .. && rm -fr trash
                # but that means we forbid any tests that use their own
                # subdirectory from calling test_done without coming back
                # to where they started from.
                # The Makefile provided will clean this test area so
                # we will leave things as they are.

                say "passed all $test_count test(s)"
                exit 0 ;;

        *)
                say "failed $test_failure among $test_count test(s)"
                exit 1 ;;

        esac
}

# Test the binaries we have just built.  The tests are kept in
# t/ subdirectory and are run in trash subdirectory.
PATH=$(pwd)/..:$PATH
GIT_EXEC_PATH=$(pwd)/..
GIT_TEMPLATE_DIR=$(pwd)/../templates/blt
GIT_CONFIG=.git/config
export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG

GITPERLLIB=$(pwd)/../perl/blib/lib:$(pwd)/../perl/blib/arch/auto/Git
export GITPERLLIB
test -d ../templates/blt || {
        error "You haven't built things yet, have you?"
}

if ! test -x ../test-chmtime; then
        echo >&2 'You need to build test-chmtime:'
        echo >&2 'Run "make test-chmtime" in the source (toplevel) directory'
        exit 1
fi

# Test repository
test=trash
rm -fr "$test"
test_create_repo $test
cd "$test"

this_test=$(expr "./$0" : '.*/\(t[0-9]*\)-[^/]*$')
for skp in $GIT_SKIP_TESTS
do
        to_skip=
        for skp in $GIT_SKIP_TESTS
        do
                case "$this_test" in
                $skp)
                        to_skip=t
                esac
        done
        case "$to_skip" in
        t)
                say >&3 "skipping test $this_test altogether"
                say "skip all tests in $this_test"
                test_done
        esac
done