add bash-it

dot_bash_it/test/plugins/ruby.plugin.bats

@@ -0,0 +1,31 @@
+# shellcheck shell=bats
+
+load "${MAIN_BASH_IT_DIR?}/test/test_helper.bash"
+
+function local_setup_file() {
+  setup_libs "helpers"
+}
+
+@test "plugins ruby: remove_gem is defined" {
+  run load "${BASH_IT?}/plugins/available/ruby.plugin.bash"
+  assert_success
+  load "${BASH_IT?}/plugins/available/ruby.plugin.bash"
+
+  run type remove_gem
+  assert_line -n 1 "remove_gem () "
+}
+
+@test "plugins ruby: PATH includes ~/.gem/ruby/bin" {
+  if ! type ruby >/dev/null; then
+    skip 'ruby not installed'
+  fi
+
+  mkdir -p "$(ruby -e 'print Gem.user_dir')/bin"
+
+  run load "${BASH_IT?}/plugins/available/ruby.plugin.bash"
+  assert_success
+  load "${BASH_IT?}/plugins/available/ruby.plugin.bash"
+
+  local last_path_entry="$(tail -1 <<<"${PATH//:/$'\n'}")"
+  [[ "${last_path_entry}" == "$(ruby -e 'print Gem.user_dir')/bin" ]]
+}