# Vitest v0.0.121 — Release & Upgrade Intelligence
- **Product:** Vitest (https://vitest.dev)
- **Version:** v0.0.121
- **Released:** Dec 29, 2021
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/vitest/updates/v0.0.121/

## Executive Summary (TL;DR)
Vitest v0.0.121. Source highlight: incorrect behaviour of toBeDefined with not flag (97abcb9)

## New Features
- add spy name to assertion messages (#361) (0b4f19e)
- findRelatedTests flag, to run only changed tests (#363) (2a271b5)
- more expect compatible APIs (#360) (577ff67)

## Bug Fixes
- incorrect behaviour of toBeDefined with not flag (97abcb9)
- toStrictEqual didn't have an assertion (fc9524b)