cli/git-remote: add export command

Two (sub)features are stubbed out in this initial implementation:
deleting messages (as opposed to tags), and missing messages. There
are two corresponding tests marked as broken in T860-git-remote.sh.
A third test passes with the stub, which is maybe not ideal, but at
least it acts as a regression test.

2 files changed, 45 insertions, 0 deletions

diff --git a/performance-test/M07-git-remote.sh b/performance-test/M07-git-remote.sh
index 57b9ab32..24b43f67 100755
--- a/performance-test/M07-git-remote.sh
+++ b/performance-test/M07-git-remote.sh
@@ -6,6 +6,7 @@ test_description='git remote helper'
 
 mkdir repo
 export GIT_DIR=`pwd`/repo
+MAKE_EXPORT_PY=$NOTMUCH_SRCDIR/test/make-export.py
 
 memory_start
 
@@ -13,4 +14,7 @@ echo "import refs/heads/master" > import.in
 
 memory_run "import" "git-remote-notmuch origin notmuch:// >import.out <import.in"
 
+python3 $MAKE_EXPORT_PY > export.in
+memory_run "export" "git-remote-notmuch origin notmuch:// >export.out <export.in"
+
 memory_done
diff --git a/performance-test/T08-git-remote.sh b/performance-test/T08-git-remote.sh
index df03d978..00ee1702 100755
--- a/performance-test/T08-git-remote.sh
+++ b/performance-test/T08-git-remote.sh
@@ -4,9 +4,50 @@ test_description='git-remote-notmuch'
 
 . $(dirname "$0")/perf-test-lib.sh || exit 1
 
+add_tags() {
+    local dir=$1
+    local denom=$2
+    local olddir=$(pwd)
+
+    cd $dir
+    find . -name tags -type f |
+	while read -r path; do
+	      if [ $(($RANDOM % $denom)) -eq 0 ]; then
+		  echo $RANDOM >> $path
+	      fi
+	done
+
+    cd $olddir
+}
+
 time_start
 
 time_run 'clone --bare' "git clone --quiet --bare -b master notmuch::default default.git"
 time_run 'clone' "git clone --quiet -b master notmuch:// repo"
 
+time_run "push (no changes)" "git -C repo push --quiet origin master"
+
+add_tags repo 10
+git -C repo add -u
+git -C repo commit --quiet -m'add tags to 10% of messages'
+time_run "push (10% changed)" "git -C repo push --quiet origin master"
+
+add_tags repo 4
+git -C repo add -u
+git -C repo commit --quiet -m'add tags to 25% of messages'
+time_run "push (25% changed)" "git -C repo push --quiet origin master"
+
+add_tags repo 2
+git -C repo add -u
+git -C repo commit --quiet -m'add tags to 50% of messages'
+time_run "push (50% changed)" "git -C repo push --quiet origin master"
+
+hash=$(git -C repo hash-object --stdin -w < /dev/null)
+# replace all files with empty files
+git -C repo ls-tree -r HEAD | sed "s/blob [^\t]*/blob $hash/" \
+       | git -C repo update-index --index-info
+git -C repo commit --quiet -m'zero tags' 2>>log.txt 1>&2
+
+time_run "push (rem. all tags)" "git -C repo push --quiet origin master"
+
 time_done