test: Improve test reliability by replacing real timers with fake timers

[dngur9801]

Description

This PR replaces real timers in test code with fake/mock timers to improve test reliability and execution speed.

Changes

• Replaced setTimeout/setInterval calls with mock timer implementations
• Added timer mocking library to the test environment
• Updated affected test cases to use the fake timer API
• Removed unnecessary waits and delays in tests

Advantages

• More reliable test execution without timing-related flakiness
• Faster test execution as we don't need to wait for actual time to pass
• Better control over timer behavior in test scenarios

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
es-toolkit	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Mar 11, 2025 4:45pm

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.40%. Comparing base (83d9d2d) to head (b637cc8).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #983   +/-   ##
=======================================
  Coverage   99.40%   99.40%           
=======================================
  Files         381      381           
  Lines        3371     3371           
  Branches     1002     1002           
=======================================
  Hits         3351     3351           
  Misses         19       19           
  Partials        1        1           

🚀 New features to boost your workflow:

• ❄ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.