test(as): add comprehensive tests for type conversion utilities #117
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WalkthroughA new test file introduces comprehensive unit tests and benchmarks for generic type conversion and error handling utilities in the Changes
Sequence Diagram(s)sequenceDiagram
participant Test as test runner
participant AsFn as Conversion Function
participant AsError as Error Extractor
Test->>AsFn: Call As, AsFn, SliceAs, SliceAsFn
AsFn-->>Test: Return converted value or error
Test->>AsError: Call AsError, AsErrors
AsError-->>Test: Return extracted error(s)
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📜 Recent review detailsConfiguration used: CodeRabbit UI 📒 Files selected for processing (1)
🧰 Additional context used📓 Path-based instructions (4)**/*.goInstructions used from: Sources:
**/*_test.goInstructions used from: Sources:
**/*Instructions used from: Sources:
**/*.{md,go}Instructions used from: Sources:
🧠 Learnings (2)📓 Common learningsas_test.go (3)🧬 Code Graph Analysis (1)as_test.go (2)
🔇 Additional comments (4)
✨ Finishing Touches
🧪 Generate unit tests
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Actionable comments posted: 1
🔭 Outside diff range comments (1)
as_test.go (1)
557-557: Add newline at end of file.According to the coding guidelines, all files should end with a newline character.
_ = SliceAsFn(panicFn, []any{"will panic"}) } +
🧹 Nitpick comments (2)
as_test.go (2)
17-56: Method exceeds the 40-line function limit.The
testmethod is exactly 40 lines (17-56), which meets but doesn't exceed the limit. However, it's quite complex with multiple switch cases. Consider refactoring into smaller helper methods for better maintainability.
43-43: Consider using errors.Is() for error comparison.Direct string comparison of error messages might not work correctly for wrapped errors or errors with dynamic content. Consider using
errors.Is()for more robust error comparison, especially if testing error types rather than exact messages.
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as_test.go(1 hunks)
🧰 Additional context used
📓 Path-based instructions (4)
**/*.go
Instructions used from:
Sources:
📄 CodeRabbit Inference Engine
- AGENT.md
**/*_test.go
Instructions used from:
Sources:
📄 CodeRabbit Inference Engine
- AGENT.md
**/*
Instructions used from:
Sources:
📄 CodeRabbit Inference Engine
- AGENT.md
**/*.{md,go}
Instructions used from:
Sources:
📄 CodeRabbit Inference Engine
- AGENT.md
🧠 Learnings (2)
📓 Common learnings
Learnt from: CR
PR: darvaza-proxy/core#0
File: AGENT.md:0-0
Timestamp: 2025-07-10T13:13:22.040Z
Learning: Applies to **/*_test.go : Comprehensive coverage for generic functions is expected in tests.
Learnt from: CR
PR: darvaza-proxy/core#0
File: AGENT.md:0-0
Timestamp: 2025-07-10T13:13:22.040Z
Learning: Applies to **/*_test.go : Table-driven tests are preferred for Go tests.
Learnt from: CR
PR: darvaza-proxy/core#0
File: AGENT.md:0-0
Timestamp: 2025-07-10T13:13:22.040Z
Learning: Applies to **/*_test.go : Helper functions like `S[T]()` should be used to create test slices in Go tests.
as_test.go (3)
Learnt from: CR
PR: darvaza-proxy/core#0
File: AGENT.md:0-0
Timestamp: 2025-07-10T13:13:22.040Z
Learning: Applies to **/*_test.go : Comprehensive coverage for generic functions is expected in tests.
Learnt from: CR
PR: darvaza-proxy/core#0
File: AGENT.md:0-0
Timestamp: 2025-07-10T13:13:22.040Z
Learning: Applies to **/*_test.go : Helper functions like `S[T]()` should be used to create test slices in Go tests.
Learnt from: CR
PR: darvaza-proxy/core#0
File: AGENT.md:0-0
Timestamp: 2025-07-10T13:13:22.040Z
Learning: Applies to **/*_test.go : Table-driven tests are preferred for Go tests.
🧬 Code Graph Analysis (1)
as_test.go (1)
as.go (6)
As(4-7)AsFn(10-17)SliceAs(20-22)SliceAsFn(26-42)AsError(51-73)AsErrors(77-82)
🔇 Additional comments (3)
as_test.go (3)
483-518: Well-structured performance benchmarks.The benchmarks provide good coverage of the main functions and follow Go benchmark best practices. The use of
b.ResetTimer()inBenchmarkSliceAscorrectly excludes setup time from measurements.
520-556: Excellent edge case coverage.These tests effectively verify generic type conversions and panic propagation. The deferred recover pattern in
TestSliceAsFnEdgeCasesproperly validates panic behaviour.
1-556: Comprehensive test coverage for type conversion utilities.Excellent work on providing thorough test coverage! The tests effectively cover:
- All exported functions with various input scenarios
- Edge cases including nil values, empty slices, and type mismatches
- Custom error types for testing error conversion interfaces
- Performance benchmarks with good methodology
- Panic propagation behaviour
The table-driven test approach aligns perfectly with Go best practices and the coding guidelines.
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- Add 555 lines of test code for all functions in as.go - Test As[T] and AsFn[T] generic type conversions - Test SliceAs[T,S] and SliceAsFn[T,S] slice conversions - Test AsError and AsErrors with custom error interfaces - Add benchmarks showing zero allocations for most operations - Include edge cases: nil inputs, panics, invalid conversions - Improve overall test coverage to 55.0% Signed-off-by: Alejandro Mery <amery@apptly.co>
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Summary
This PR adds comprehensive tests for type conversion utilities in as.go:
Test Coverage
Adds 556 lines of comprehensive test code in
as_test.gocovering:As[T]andAsFn[T]generic type conversionsSliceAs[T,S]andSliceAsFn[T,S]slice conversionsAsErrorandAsErrorserror interface conversionsPerformance
Benchmarks demonstrate excellent performance with zero allocations for most operations:
Testing Approach
Table-driven tests with method-based test cases following established patterns.
Related
Part of comprehensive test coverage improvement initiative.
Summary by CodeRabbit