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feat: improve unit test coverage with new tests#309

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devin-ai-integration[bot] wants to merge 1 commit intomainfrom
devin/1770403735-improve-unit-test-coverage
Open

feat: improve unit test coverage with new tests#309
devin-ai-integration[bot] wants to merge 1 commit intomainfrom
devin/1770403735-improve-unit-test-coverage

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@devin-ai-integration devin-ai-integration bot commented Feb 6, 2026

feat: improve unit test coverage with new tests

Summary

Adds 8 new test files to improve unit test coverage for utility functions, React hooks, and core engine utilities. All tests follow established patterns found in the existing codebase.

New test files:

  • app/util/formatNumber.test.ts - Number formatting with thousand separators
  • app/util/extractEthJsErrorMessage.test.ts - ethjs-rpc error message extraction
  • app/util/lodash/index.test.ts - Lodash-like utilities (isZero, lte, gte, lt, gt, isString)
  • app/util/fetch/FetchState.test.ts - FetchError class and FetchState types
  • app/util/transaction-reducer-helpers.test.ts - getTxData and getTxMeta functions
  • app/core/Engine/utils/logger.test.ts - logEngineCreation function
  • app/components/hooks/usePrevious.test.ts - usePrevious hook
  • app/components/hooks/useDebouncedValue.test.ts - useDebouncedValue hook

Review & Testing Checklist for Human

  • Verify all new tests pass in CI (tests were not fully verified locally due to long test suite runtime)
  • Spot-check test assertions match the actual behavior of the functions being tested
  • Verify useDebouncedValue.test.ts fake timer tests are not flaky across multiple CI runs

Test Plan

  1. Wait for CI to complete and verify all unit tests pass
  2. Optionally run yarn test:unit locally to verify tests pass
  3. Check coverage report to confirm coverage has improved

Notes


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Add unit tests for:
- formatNumber utility
- extractEthJsErrorMessage utility
- lodash utilities (isZero, lte, gte, lt, gt, isString)
- FetchState and FetchError classes
- transaction-reducer-helpers (getTxData, getTxMeta)
- Engine logger utility (logEngineCreation)
- usePrevious hook
- useDebouncedValue hook

These tests improve coverage for utility functions, hooks, and
core engine utilities following established testing patterns.

Co-Authored-By: Abhay Aggarwal <abhay.aggarwal@codeium.com>
@devin-ai-integration
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✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

View in Devin Review to see 4 additional findings.

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