Fix tests for travis

tests/helpers/create_and_save_tmux_test_environment.exp

@@ -34,8 +34,7 @@ new_tmux_window
 
 # session yellow
 new_tmux_session "yellow"
-run_shell_command "mkdir bar"
-run_shell_command "cd bar"
+run_shell_command "cd /tmp/bar"
 
 start_resurrect_save
 

tests/helpers/resurrect_helpers.sh

@@ -1,8 +1,11 @@
 install_tmux_resurrect_helper() {
-	rm -rf ~/.tmux/plugins/tmux-resurrect/
-	cd "$CURRENT_DIR"
-	git clone --recursive ../ ~/.tmux/plugins/tmux-resurrect/ >/dev/null 2>&1
-	cd - >/dev/null
+	local plugin_path="${HOME}/.tmux/plugins/tmux-resurrect/"
+	rm -rf "$plugin_path"
+	if [ -n "$TRAVIS" ]; then
+		git clone --recursive https://github.com/tmux-plugins/tmux-resurrect --branch "$TRAVIS_BRANCH" "$plugin_path" >/dev/null 2>&1
+	else # used on vagrant
+		git clone --recursive "${CURRENT_DIR}/../" "$plugin_path" >/dev/null 2>&1
+	fi
 }
 
 # we want "fixed" dimensions no matter the size of real display