test: Unit tests

[liamcho]

Changes

ticket: AC-4551

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[liamcho]

@bang9 실행하면 에러가 나는데 어떤 설정이 필요한걸까요?

➜  chat-ai-widget git:(test/AC-4551-add-unit-tests) ✗ yarn test-ct
Error: /Users/liam.cho/Github/chat-ai-widget/__visual_unit_tests__/tests.spec.tsx: Couldn't find a Program

    at e.getProgramParent (/Users/liam.cho/Github/chat-ai-widget/node_modules/playwright/lib/transform/babelBundleImpl.js:12:40826)

[github-actions]

Size Change: 0 B

Total Size: 618 kB

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