✅ test: add unit tests for packages/const/src/utils/merge

[lobehubbot]

Summary

• Added comprehensive unit tests for packages/const/src/utils/merge
• Total test files added: 1
• Test cases added: 37
• Coverage focus: Both merge and mergeArrayById utility functions with edge cases and error handling

Changes

• All tests pass successfully (37/37 passing)
• Business logic coverage improved for merge utilities
• Edge cases and error handling covered
• Tests follow existing patterns
• Type check passes

Module Processed

packages/const/src/utils/merge.ts

Test Coverage

Functions Tested:

• merge(target, source) - Custom object merge with array replacement
• mergeArrayById(defaultItems, userItems) - ID-based array merging with metadata preservation

Coverage Type:

Unit tests

Test Approach:

Comprehensive test suite covering:

For merge function:

• Basic object merging
• Nested object merging
• Array replacement behavior (instead of merging)
• Edge cases (empty objects, null/undefined values)
• Deep nesting scenarios
• Mixed data types (booleans, numbers, strings)
• Non-mutation verification

For mergeArrayById function:

• Basic ID-based merging with metadata preservation
• Empty array handling
• ID matching scenarios (new items, missing items, multiple items)
• Special value handling (null, undefined, empty objects)
• Nested object merging within array items
• Duplicate ID handling
• No mutation verification
• Complex real-world scenarios (model configurations)
• Mixed scenarios with new, updated, and unchanged items

All tests use the Arrange-Act-Assert pattern and follow Vitest best practices.

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🤖 Generated with Claude Code

Summary by Sourcery

Tests:

• Add comprehensive Vitest unit tests for merge and mergeArrayById covering normal behavior, edge cases, and non-mutation guarantees.

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Project	Deployment	Review	Updated (UTC)
lobehub	Ready	Preview, Comment	Dec 26, 2025 5:54am

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Adds a comprehensive Vitest unit test suite for the merge utilities in packages/const/src/utils/merge.ts, focusing on correctness, edge cases, and non-mutation behavior for both merge and mergeArrayById.

File-Level Changes

Change	Details	Files
Introduce a comprehensive Vitest test suite for merge and mergeArrayById utilities.	Add a new test file exercising merge with basic and nested object merging, array replacement semantics, and non-mutation guarantees. Cover edge cases for merge including empty objects, null/undefined values, deep nesting, and mixed primitive types. Add tests for mergeArrayById covering ID-based merging, metadata preservation, empty input handling, new/missing/duplicate IDs, nested object merging within items, and non-mutation. Include complex, realistic scenarios (e.g., model configurations) to validate behavior under mixed new/updated/unchanged items. Ensure tests follow Arrange-Act-Assert structure and existing Vitest conventions used in the repository.	packages/const/src/utils/merge.test.ts

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[gru-agent]

TestGru Assignment

Summary

Link	CommitId	Status	Reason
Detail	e30127e	🚫 Skipped	No files need to be tested {"packages/const/src/utils/merge.test.ts":"File path does not match include patterns."}

History Assignment

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.31%. Comparing base (c00dbeb) to head (e30127e).

Additional details and impacted files

@@           Coverage Diff            @@
##             next   #10987    +/-   ##
========================================
  Coverage   80.31%   80.31%            
========================================
  Files         980      980            
  Lines       66983    66983            
  Branches     8780     9151   +371     
========================================
  Hits        53800    53800            
  Misses      13183    13183            

Flag	Coverage Δ
app	73.10% <ø> (ø)
database	98.25% <ø> (ø)
packages/agent-runtime	98.08% <ø> (ø)
packages/context-engine	91.61% <ø> (ø)
packages/conversation-flow	98.05% <ø> (ø)
packages/electron-server-ipc	93.76% <ø> (ø)
packages/file-loaders	92.21% <ø> (ø)
packages/model-bank	100.00% <ø> (ø)
packages/model-runtime	89.60% <ø> (ø)
packages/prompts	79.17% <ø> (ø)
packages/python-interpreter	96.50% <ø> (ø)
packages/utils	95.31% <ø> (ø)
packages/web-crawler	96.81% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
Store	73.05% <ø> (ø)
Services	56.44% <ø> (ø)
Server	75.19% <ø> (ø)
Libs	39.30% <ø> (ø)
Utils	82.05% <ø> (ø)

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