#!/bin/sh

test_description='git-cvsserver and git refspecs

tests ability for git-cvsserver to switch between and compare
tags, branches and other git refspecs'

. ./test-lib.sh

#########

check_start_tree() {
    rm -f "$WORKDIR/check.list"
    echo "start $1" >> "${WORKDIR}/check.log"
}

check_file() {
    sandbox="$1"
    file="$2"
    ver="$3"
    GIT_DIR=$SERVERDIR git show "${ver}:${file}" \
	> "$WORKDIR/check.got" 2> "$WORKDIR/check.stderr"
    test_cmp "$WORKDIR/check.got" "$sandbox/$file"
    stat=$?
    echo "check_file $sandbox $file $ver : $stat" >> "$WORKDIR/check.log"
    echo "$file" >> "$WORKDIR/check.list"
    return $stat
}

check_end_tree() {
    sandbox="$1"
    expectCount=$(wc -l < "$WORKDIR/check.list")
    cvsCount=$(find "$sandbox" -name CVS -prune -o -type f -print | wc -l)
    test x"$cvsCount" = x"$expectCount"
    stat=$?
    echo "check_end $sandbox : $stat cvs=$cvsCount expect=$expectCount" \
	>> "$WORKDIR/check.log"
    return $stat
}

check_end_full_tree() {
    sandbox="$1"
    ver="$2"
    expectCount=$(wc -l < "$WORKDIR/check.list")
    cvsCount=$(find "$sandbox" -name CVS -prune -o -type f -print | wc -l)
    gitCount=$(git ls-tree -r "$2" | wc -l)
    test x"$cvsCount" = x"$expectCount" -a x"$gitCount" = x"$expectCount"
    stat=$?
    echo "check_end $sandbox : $stat cvs=$cvsCount git=$gitCount expect=$expectCount" \
	>> "$WORKDIR/check.log"
    return $stat
}

#########

check_diff() {
    diffFile="$1"
    vOld="$2"
    vNew="$3"
    rm -rf diffSandbox
    git clone -q -n . diffSandbox &&
    ( cd diffSandbox &&
      git checkout "$vOld" &&
      git apply -p0 --index <"../$diffFile" &&
      git diff --exit-code "$vNew" ) > check_diff_apply.out 2>&1
}

#########

cvs >/dev/null 2>&1
if test $? -ne 1
then
    skip_all='skipping git-cvsserver tests, cvs not found'
    test_done
fi
if ! test_have_prereq PERL
then
    skip_all='skipping git-cvsserver tests, perl not available'
    test_done
fi
"$PERL_PATH" -e 'use DBI; use DBD::SQLite' >/dev/null 2>&1 || {
    skip_all='skipping git-cvsserver tests, Perl SQLite interface unavailable'
    test_done
}

unset GIT_DIR GIT_CONFIG
WORKDIR=$(pwd)
SERVERDIR=$(pwd)/gitcvs.git
git_config="$SERVERDIR/config"
CVSROOT=":fork:$SERVERDIR"
CVSWORK="$(pwd)/cvswork"
CVS_SERVER=git-cvsserver
export CVSROOT CVS_SERVER

rm -rf "$CVSWORK" "$SERVERDIR"
test_expect_success 'setup v1, b1' '
    echo "Simple text file" > textfile.c &&
    echo "t2" > t2 &&
    mkdir adir &&
    echo "adir/afile line1" > adir/afile &&
    echo "adir/afile line2" >> adir/afile &&
    echo "adir/afile line3" >> adir/afile &&
    echo "adir/afile line4" >> adir/afile &&
    echo "adir/a2file" >> adir/a2file &&
    mkdir adir/bdir &&
    echo "adir/bdir/bfile line 1" > adir/bdir/bfile &&
    echo "adir/bdir/bfile line 2" >> adir/bdir/bfile &&
    echo "adir/bdir/b2file" > adir/bdir/b2file &&
    git add textfile.c t2 adir &&
    git commit -q -m "First Commit (v1)" &&
    git tag v1 &&
    git branch b1 &&
    git clone -q --bare "$WORKDIR/.git" "$SERVERDIR" >/dev/null 2>&1 &&
    GIT_DIR="$SERVERDIR" git config --bool gitcvs.enabled true &&
    GIT_DIR="$SERVERDIR" git config gitcvs.logfile "$SERVERDIR/gitcvs.log"
'

rm -rf cvswork
test_expect_success 'cvs co v1' '
    cvs -f -Q co -r v1 -d cvswork master >cvs.log 2>&1 &&
    check_start_tree cvswork &&
    check_file cvswork textfile.c v1 &&
    check_file cvswork t2 v1 &&
    check_file cvswork adir/afile v1 &&
    check_file cvswork adir/a2file v1 &&
    check_file cvswork adir/bdir/bfile v1 &&
    check_file cvswork adir/bdir/b2file v1 &&
    check_end_tree cvswork
'

rm -rf cvswork
test_expect_success 'cvs co b1' '
    cvs -f co -r b1 -d cvswork master >cvs.log 2>&1 &&
    check_start_tree cvswork &&
    check_file cvswork textfile.c v1 &&
    check_file cvswork t2 v1 &&
    check_file cvswork adir/afile v1 &&
    check_file cvswork adir/a2file v1 &&
    check_file cvswork adir/bdir/bfile v1 &&
    check_file cvswork adir/bdir/b2file v1 &&
    check_end_tree cvswork
'

test_expect_success 'cvs co b1 [cvswork3]' '
    cvs -f co -r b1 -d cvswork3 master >cvs.log 2>&1 &&
    check_start_tree cvswork3 &&
    check_file cvswork3 textfile.c v1 &&
    check_file cvswork3 t2 v1 &&
    check_file cvswork3 adir/afile v1 &&
    check_file cvswork3 adir/a2file v1 &&
    check_file cvswork3 adir/bdir/bfile v1 &&
    check_file cvswork3 adir/bdir/b2file v1 &&
    check_end_full_tree cvswork3 v1
'

test_expect_success 'edit cvswork3 and save diff' '
    ( cd cvswork3 &&
      sed -i -e "s/line1/line1 - data/" adir/afile &&
      echo "afile5" > adir/afile5 &&
      rm t2 &&
      cvs -f add adir/afile5 &&
      cvs -f rm t2 &&
      test_must_fail cvs -f diff -N -u >"$WORKDIR/cvswork3edit.diff"
    )
'

test_expect_success 'setup v1.2 on b1' '
    git checkout b1 &&
    echo "new v1.2" > t3 &&
    rm t2 &&
    sed -i -e "s/line3/line3 - more data/" adir/afile &&
    rm adir/a2file &&
    echo "a3file" >> adir/a3file &&
    echo "bfile line 3" >> adir/bdir/bfile &&
    rm adir/bdir/b2file &&
    echo "b3file" > adir/bdir/b3file &&
    mkdir cdir &&
    echo "cdir/cfile" > cdir/cfile &&
    git add -A cdir adir t3 t2 &&
    git commit -q -m 'v1.2' &&
    git tag v1.2 &&
    git push --tags gitcvs.git b1:b1
'

test_expect_success 'cvs -f up (on b1 adir)' '
    ( cd cvswork/adir &&
      cvs -f up -d ) >cvs.log 2>&1 &&
    check_start_tree cvswork &&
    check_file cvswork textfile.c v1 &&
    check_file cvswork t2 v1 &&
    check_file cvswork adir/afile v1.2 &&
    check_file cvswork adir/a3file v1.2 &&
    check_file cvswork adir/bdir/bfile v1.2 &&
    check_file cvswork adir/bdir/b3file v1.2 &&
    check_end_tree cvswork
'

test_expect_success 'cvs up (on b1 /)' '
    ( cd cvswork &&
      cvs -f up -d ) >cvs.log 2>&1 &&
    check_start_tree cvswork &&
    check_file cvswork textfile.c v1.2 &&
    check_file cvswork t3 v1.2 &&
    check_file cvswork adir/afile v1.2 &&
    check_file cvswork adir/a3file v1.2 &&
    check_file cvswork adir/bdir/bfile v1.2 &&
    check_file cvswork adir/bdir/b3file v1.2 &&
    check_file cvswork cdir/cfile v1.2 &&
    check_end_tree cvswork
'

# Make sure "CVS/Tag" files didn't get messed up:
test_expect_success 'cvs up (on b1 /) (again; check CVS/Tag files)' '
    ( cd cvswork &&
      cvs -f up -d ) >cvs.log 2>&1 &&
    check_start_tree cvswork &&
    check_file cvswork textfile.c v1.2 &&
    check_file cvswork t3 v1.2 &&
    check_file cvswork adir/afile v1.2 &&
    check_file cvswork adir/a3file v1.2 &&
    check_file cvswork adir/bdir/bfile v1.2 &&
    check_file cvswork adir/bdir/b3file v1.2 &&
    check_file cvswork cdir/cfile v1.2 &&
    check_end_tree cvswork
'

# update to another version:
test_expect_success 'cvs up -r v1' '
    ( cd cvswork &&
      cvs -f up -r v1 ) >cvs.log 2>&1 &&
    check_start_tree cvswork &&
    check_file cvswork textfile.c v1 &&
    check_file cvswork t2 v1 &&
    check_file cvswork adir/afile v1 &&
    check_file cvswork adir/a2file v1 &&
    check_file cvswork adir/bdir/bfile v1 &&
    check_file cvswork adir/bdir/b2file v1 &&
    check_end_tree cvswork
'

test_expect_success 'cvs up' '
    ( cd cvswork &&
      cvs -f up ) >cvs.log 2>&1 &&
    check_start_tree cvswork &&
    check_file cvswork textfile.c v1 &&
    check_file cvswork t2 v1 &&
    check_file cvswork adir/afile v1 &&
    check_file cvswork adir/a2file v1 &&
    check_file cvswork adir/bdir/bfile v1 &&
    check_file cvswork adir/bdir/b2file v1 &&
    check_end_tree cvswork
'

test_expect_success 'cvs up (again; check CVS/Tag files)' '
    ( cd cvswork &&
      cvs -f up -d ) >cvs.log 2>&1 &&
    check_start_tree cvswork &&
    check_file cvswork textfile.c v1 &&
    check_file cvswork t2 v1 &&
    check_file cvswork adir/afile v1 &&
    check_file cvswork adir/a2file v1 &&
    check_file cvswork adir/bdir/bfile v1 &&
    check_file cvswork adir/bdir/b2file v1 &&
    check_end_tree cvswork
'

test_expect_success 'setup simple b2' '
    git branch b2 v1 &&
    git push --tags gitcvs.git b2:b2
'

test_expect_success 'cvs co b2 [into cvswork2]' '
    cvs -f co -r b2 -d cvswork2 master >cvs.log 2>&1 &&
    check_start_tree cvswork &&
    check_file cvswork textfile.c v1 &&
    check_file cvswork t2 v1 &&
    check_file cvswork adir/afile v1 &&
    check_file cvswork adir/a2file v1 &&
    check_file cvswork adir/bdir/bfile v1 &&
    check_file cvswork adir/bdir/b2file v1 &&
    check_end_tree cvswork
'

test_expect_success 'root dir edit [cvswork2]' '
    ( cd cvswork2 &&
      echo "Line 2" >> textfile.c &&
      test_must_fail cvs -f diff -u >"$WORKDIR/cvsEdit1.diff" &&
      cvs -f commit -m "edit textfile.c" textfile.c
    ) >cvsEdit1.log 2>&1
'

test_expect_success 'root dir rm file [cvswork2]' '
    ( cd cvswork2 &&
      cvs -f rm -f t2 &&
      cvs -f diff -u > ../cvsEdit2-empty.diff &&
      test_must_fail cvs -f diff -N -u >"$WORKDIR/cvsEdit2-N.diff" &&
      cvs -f commit -m "rm t2"
    ) > cvsEdit2.log 2>&1
'

test_expect_success 'subdir edit/add/rm files [cvswork2' '
    ( cd cvswork2 &&
      sed -i -e "s/line 1/line 1 (v2)/" adir/bdir/bfile &&
      rm adir/bdir/b2file &&
      cd adir &&
      cvs -f rm bdir/b2file &&
      echo "4th file" > bdir/b4file &&
      cvs -f add bdir/b4file &&
      test_must_fail cvs -f diff -N -u >"$WORKDIR/cvsEdit3.diff" &&
      git fetch gitcvs.git b2:b2 &&
      ( cd .. &&
	test_must_fail cvs -f diff -u -N -r v1.2 >"$WORKDIR/cvsEdit3-v1.2.diff" &&
	test_must_fail cvs -f diff -u -N -r v1.2 -r v1 >"$WORKDIR/cvsEdit3-v1.2-v1.diff"
      ) &&
      cvs -f commit -m "various add/rm/edit"
    ) >cvs.log 2>&1
'

test_expect_success 'validate result of edits [cvswork2]' '
    git fetch gitcvs.git b2:b2 &&
    git tag v2 b2 &&
    git push --tags gitcvs.git b2:b2 &&
    check_start_tree cvswork2 &&
    check_file cvswork2 textfile.c v2 &&
    check_file cvswork2 adir/afile v2 &&
    check_file cvswork2 adir/a2file v2 &&
    check_file cvswork2 adir/bdir/bfile v2 &&
    check_file cvswork2 adir/bdir/b4file v2 &&
    check_end_full_tree cvswork2 v2
'

test_expect_success 'validate basic diffs saved during above cvswork2 edits' '
    test $(grep Index: cvsEdit1.diff | wc -l) = 1 &&
    test ! -s cvsEdit2-empty.diff &&
    test $(grep Index: cvsEdit2-N.diff | wc -l) = 1 &&
    test $(grep Index: cvsEdit3.diff | wc -l) = 3 &&
    rm -rf diffSandbox &&
    git clone -q -n . diffSandbox &&
    ( cd diffSandbox &&
      git checkout v1 &&
      git apply -p0 --index <"$WORKDIR/cvsEdit1.diff" &&
      git apply -p0 --index <"$WORKDIR/cvsEdit2-N.diff" &&
      git apply -p0 --directory=adir --index <"$WORKDIR/cvsEdit3.diff" &&
      git diff --exit-code v2 ) >"check_diff_apply.out" 2>&1
'

test_expect_success 'validate v1.2 diff saved during last cvswork2 edit' '
    test $(grep Index: cvsEdit3-v1.2.diff | wc -l) = 9 &&
    check_diff cvsEdit3-v1.2.diff v1.2 v2
'

test_expect_success 'validate v1.2 v1 diff saved during last cvswork2 edit' '
    test $(grep Index: cvsEdit3-v1.2-v1.diff | wc -l) = 9 &&
    check_diff cvsEdit3-v1.2-v1.diff v1.2 v1
'

test_expect_success 'cvs up [cvswork2]' '
    ( cd cvswork2 &&
      cvs -f up ) >cvs.log 2>&1 &&
    check_start_tree cvswork2 &&
    check_file cvswork2 textfile.c v2 &&
    check_file cvswork2 adir/afile v2 &&
    check_file cvswork2 adir/a2file v2 &&
    check_file cvswork2 adir/bdir/bfile v2 &&
    check_file cvswork2 adir/bdir/b4file v2 &&
    check_end_full_tree cvswork2 v2
'

test_expect_success 'cvs up -r b2 [back to cvswork]' '
    ( cd cvswork &&
      cvs -f up -r b2 ) >cvs.log 2>&1 &&
    check_start_tree cvswork &&
    check_file cvswork textfile.c v2 &&
    check_file cvswork adir/afile v2 &&
    check_file cvswork adir/a2file v2 &&
    check_file cvswork adir/bdir/bfile v2 &&
    check_file cvswork adir/bdir/b4file v2 &&
    check_end_full_tree cvswork v2
'

test_expect_success 'cvs up -r b1' '
    ( cd cvswork &&
      cvs -f up -r b1 ) >cvs.log 2>&1 &&
    check_start_tree cvswork &&
    check_file cvswork textfile.c v1.2 &&
    check_file cvswork t3 v1.2 &&
    check_file cvswork adir/afile v1.2 &&
    check_file cvswork adir/a3file v1.2 &&
    check_file cvswork adir/bdir/bfile v1.2 &&
    check_file cvswork adir/bdir/b3file v1.2 &&
    check_file cvswork cdir/cfile v1.2 &&
    check_end_full_tree cvswork v1.2
'

test_expect_success 'cvs up -A' '
    ( cd cvswork &&
      cvs -f up -A ) >cvs.log 2>&1 &&
    check_start_tree cvswork &&
    check_file cvswork textfile.c v1 &&
    check_file cvswork t2 v1 &&
    check_file cvswork adir/afile v1 &&
    check_file cvswork adir/a2file v1 &&
    check_file cvswork adir/bdir/bfile v1 &&
    check_file cvswork adir/bdir/b2file v1 &&
    check_end_full_tree cvswork v1
'

test_expect_success 'cvs up (check CVS/Tag files)' '
    ( cd cvswork &&
      cvs -f up ) >cvs.log 2>&1 &&
    check_start_tree cvswork &&
    check_file cvswork textfile.c v1 &&
    check_file cvswork t2 v1 &&
    check_file cvswork adir/afile v1 &&
    check_file cvswork adir/a2file v1 &&
    check_file cvswork adir/bdir/bfile v1 &&
    check_file cvswork adir/bdir/b2file v1 &&
    check_end_full_tree cvswork v1
'

# This is not really legal CVS, but it seems to work anyway:
test_expect_success 'cvs up -r heads/b1' '
    ( cd cvswork &&
      cvs -f up -r heads/b1 ) >cvs.log 2>&1 &&
    check_start_tree cvswork &&
    check_file cvswork textfile.c v1.2 &&
    check_file cvswork t3 v1.2 &&
    check_file cvswork adir/afile v1.2 &&
    check_file cvswork adir/a3file v1.2 &&
    check_file cvswork adir/bdir/bfile v1.2 &&
    check_file cvswork adir/bdir/b3file v1.2 &&
    check_file cvswork cdir/cfile v1.2 &&
    check_end_full_tree cvswork v1.2
'

# But this should work even if CVS client checks -r more carefully:
test_expect_success 'cvs up -r heads_-s-b2 (cvsserver escape mechanism)' '
    ( cd cvswork &&
      cvs -f up -r heads_-s-b2 ) >cvs.log 2>&1 &&
    check_start_tree cvswork &&
    check_file cvswork textfile.c v2 &&
    check_file cvswork adir/afile v2 &&
    check_file cvswork adir/a2file v2 &&
    check_file cvswork adir/bdir/bfile v2 &&
    check_file cvswork adir/bdir/b4file v2 &&
    check_end_full_tree cvswork v2
'

v1hash=$(git rev-parse v1)
test_expect_success 'cvs up -r $(git rev-parse v1)' '
    test -n "$v1hash" &&
    ( cd cvswork &&
      cvs -f up -r "$v1hash" ) >cvs.log 2>&1 &&
    check_start_tree cvswork &&
    check_file cvswork textfile.c v1 &&
    check_file cvswork t2 v1 &&
    check_file cvswork adir/afile v1 &&
    check_file cvswork adir/a2file v1 &&
    check_file cvswork adir/bdir/bfile v1 &&
    check_file cvswork adir/bdir/b2file v1 &&
    check_end_full_tree cvswork v1
'

test_expect_success 'cvs diff -r v1 -u' '
    ( cd cvswork &&
      cvs -f diff -r v1 -u ) >cvsDiff.out 2>cvs.log &&
    test ! -s cvsDiff.out &&
    test ! -s cvs.log
'

test_expect_success 'cvs diff -N -r v2 -u' '
    ( cd cvswork &&
      test_must_fail cvs -f diff -N -r v2 -u ) >cvsDiff.out 2>cvs.log &&
    test ! -s cvs.log &&
    test -s cvsDiff.out &&
    check_diff cvsDiff.out v2 v1 > check_diff.out 2>&1
'

test_expect_success 'cvs diff -N -r v2 -r v1.2' '
    ( cd cvswork &&
      test_must_fail cvs -f diff -N -r v2 -r v1.2 -u ) >cvsDiff.out 2>cvs.log &&
    test ! -s cvs.log &&
    test -s cvsDiff.out &&
    check_diff cvsDiff.out v2 v1.2 > check_diff.out 2>&1
'

test_expect_success 'apply early [cvswork3] diff to b3' '
    git clone -q . gitwork3 &&
    ( cd gitwork3 &&
      git checkout -b b3 v1 &&
      git apply -p0 --index <"$WORKDIR/cvswork3edit.diff" &&
      git commit -m "cvswork3 edits applied" ) &&
    git fetch gitwork3 b3:b3 &&
    git tag v3 b3
'

test_expect_success 'check [cvswork3] diff' '
    ( cd cvswork3 &&
      test_must_fail cvs -f diff -N -u ) >"$WORKDIR/cvsDiff.out" 2>cvs.log &&
    test ! -s cvs.log &&
    test -s cvsDiff.out &&
    test $(grep Index: cvsDiff.out | wc -l) = 3 &&
    test_cmp cvsDiff.out cvswork3edit.diff &&
    check_diff cvsDiff.out v1 v3 > check_diff.out 2>&1
'

test_expect_success 'merge early [cvswork3] b3 with b1' '
    ( cd gitwork3 &&
      git merge "message" HEAD b1 )
    git fetch gitwork3 b3:b3 &&
    git tag v3merged b3 &&
    git push --tags gitcvs.git b3:b3
'

# This test would fail if cvsserver properly created a ".#afile"* file
# for the merge.
# TODO: Validate that the .# file was saved properly, and then
#   delete/ignore it when checking the tree.
test_expect_success 'cvs up dirty [cvswork3]' '
    ( cd cvswork3 &&
      cvs -f up &&
      test_must_fail cvs -f diff -N -u >"$WORKDIR/cvsDiff.out" ) >cvs.log 2>&1 &&
    test -s cvsDiff.out &&
    test $(grep Index: cvsDiff.out | wc -l) = 2
    check_start_tree cvswork3 &&
    check_file cvswork3 textfile.c v3merged &&
    check_file cvswork3 t3 v3merged &&
    check_file cvswork3 adir/afile v3merged &&
    check_file cvswork3 adir/a3file v3merged &&
    check_file cvswork3 adir/afile5 v3merged &&
    check_file cvswork3 adir/bdir/bfile v3merged &&
    check_file cvswork3 adir/bdir/b3file v3merged &&
    check_file cvswork3 cdir/cfile v3merged &&
    check_end_full_tree cvswork3 v3merged
'

# TODO: test cvs status

test_expect_success 'cvs commit [cvswork3' '
    ( cd cvswork3 &&
      cvs -f commit -m "dirty sandbox after auto-merge"
    ) > cvs.log 2>&1 &&
    check_start_tree cvswork3 &&
    check_file cvswork3 textfile.c v3merged &&
    check_file cvswork3 t3 v3merged &&
    check_file cvswork3 adir/afile v3merged &&
    check_file cvswork3 adir/a3file v3merged &&
    check_file cvswork3 adir/afile5 v3merged &&
    check_file cvswork3 adir/bdir/bfile v3merged &&
    check_file cvswork3 adir/bdir/b3file v3merged &&
    check_file cvswork3 cdir/cfile v3merged &&
    check_end_full_tree cvswork3 v3merged &&
    git fetch gitcvs.git b3:b4 &&
    git tag v4.1 b4 &&
    git diff --exit-code v4.1 v3merged > check_diff_apply.out 2>&1
'

test_done