Setting default GIT configuration as test/ being HOME during tests

lib/git-subrepo

@@ -1534,7 +1534,7 @@ assert-repo-is-ready() {
   [[ $command =~ ^(help|version|upgrade)$ ]] && return
 
   # We must be inside a git repo:
-  git rev-parse --git-dir &> /dev/null ||
+  git rev-parse --is-inside-git-dir &> /dev/null ||
     error "Not inside a git repository."
 
   # Get the original branch and commit:

test/setup

@@ -23,6 +23,17 @@ fi
 export XDG_CONFIG_HOME=$SCRIPT_DIR
 export HOME=$SCRIPT_DIR
 export GIT_CONFIG_NOSYSTEM=1
+# Set global GIT configuration for tests:
+if [ ! -f "${HOME}/.gitconfig" ]; then
+	git config --global user.email "[email protected]"
+	git config --global user.name "Your Name"
+	git config --global init.defaultBranch "master"
+	git config --global --add safe.directory "$(pwd)"
+	git config --global --add safe.directory "$(pwd)/.git"
+	if ! git symbolic-ref --short --quiet HEAD; then
+		git checkout -b test
+	fi
+fi
 # To be able to view current GIT confirguration during tests execution,
 # run the test suite by adding the '-v' option to the prove command.
 git config --list