refactor(strings): improve tests for case conversion functions to improve coverage and performance benchmarks#122
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…rove coverage and performance benchmarks
WalkthroughThis change introduces comprehensive, table-driven tests and benchmarks for ASCII string case conversion utilities ( Changes
Sequence Diagram(s)sequenceDiagram
participant TestRunner
participant ToUpper
participant ToLower
TestRunner->>ToUpper: Call ToUpper(input)
ToUpper-->>TestRunner: Return uppercased string
TestRunner->>ToLower: Call ToLower(input)
ToLower-->>TestRunner: Return lowercased string
Note over TestRunner: Validate outputs against expected results for each test case
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🧰 Additional context used🧠 Learnings (2)📓 Common learningsstrings_test.go (9)⏰ Context from checks skipped due to timeout of 90000ms (5)
🔇 Additional comments (10)
✨ Finishing Touches
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Summary of Changes
Hello @sixcolors, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
This pull request focuses on improving the robustness and performance validation of the string case conversion utilities. It introduces a highly structured and comprehensive set of test cases to ensure the correctness of ToUpper and ToLower functions across a wide array of inputs, while also enhancing the benchmarking suite to provide more detailed performance and allocation insights.
Highlights
- Enhanced Test Coverage: The test suite for
ToUpperandToLowerfunctions has been significantly expanded using a data-driven approach. A newTestCasestruct and a comprehensivetestCasesslice now cover a wide range of scenarios, including edge cases (empty, numbers, symbols), HTTP methods, HTTP headers, URLs, and various string lengths and character patterns (lowercase, uppercase, mixed, camelCase, kebab-case, snake_case). - New Test Cases: Added specific tests to verify the behavior of
ToUpperandToLowerfor all 128 ASCII characters, ensuring correctness across the entire ASCII range. A new test also confirms that non-ASCII characters remain unchanged by these functions. - Improved Performance Benchmarking: The benchmarks for
ToUpperandToLowerhave been refactored to utilize the newtestCasesdata, providing more thorough performance analysis across diverse inputs. Benchmarks now report memory allocations (b.ReportAllocs()) and include comparisons against the standard library'sstrings.ToUpperandstrings.ToLowerfunctions, allowing for direct performance comparisons. - Test Code Refactoring: Older, less comprehensive test functions (e.g.,
Test_IfToUpper,Test_IfToLower,Test_ToLower_DirectByteIteration) have been removed and replaced by the new data-driven test structure. String constants used for testing (largeStr,upperStr,lowerStr) have been centralized inbytes_test.gofor better organization.
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Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## master #122 +/- ##
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- Coverage 96.51% 91.87% -4.65%
==========================================
Files 9 9
Lines 517 517
==========================================
- Hits 499 475 -24
- Misses 12 36 +24
Partials 6 6
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Code Review
This pull request refactors the tests for string case conversion functions, using a table-driven approach. The benchmarks have been improved to use the same test cases and compare against the standard library. The tests for the exported functions IfToUpper and IfToLower have been removed, but the functions themselves remain. This reduces test coverage and should be addressed.
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Actionable comments posted: 0
🧹 Nitpick comments (1)
strings_test.go (1)
21-29: Consider testing the no-allocation behavior indicated by upperNoConv/lowerNoConv fields.The
TestCasestruct includesupperNoConvandlowerNoConvfields that indicate when functions should return input without allocation, but these aren't tested. Consider adding assertions to verify this behavior.Example implementation to test no-allocation cases:
func Test_ToUpper_NoAllocation(t *testing.T) { t.Parallel() for _, tc := range testCases { if tc.upperNoConv { t.Run(tc.name+"-no-alloc", func(t *testing.T) { t.Parallel() result := ToUpper(tc.input) // Verify pointer equality when no conversion needed require.True(t, &result == &tc.input, "ToUpper should return same string without allocation") }) } } }Also applies to: 157-177
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📒 Files selected for processing (2)
bytes_test.go(1 hunks)strings_test.go(1 hunks)
🧰 Additional context used
🧠 Learnings (3)
📓 Common learnings
Learnt from: ReneWerner87
PR: gofiber/contrib#0
File: :0-0
Timestamp: 2024-10-16T10:04:06.328Z
Learning: The i18n functionality in the gofiber/contrib repository is being refactored from middleware to a global container to improve robustness and performance. The global container will be initialized once before setting up routes and will manage the i18n bundle and localizer map.
Learnt from: ReneWerner87
PR: gofiber/contrib#0
File: :0-0
Timestamp: 2024-07-03T11:59:00.303Z
Learning: The i18n functionality in the gofiber/contrib repository is being refactored from middleware to a global container to improve robustness and performance. The global container will be initialized once before setting up routes and will manage the i18n bundle and localizer map.
Learnt from: gaby
PR: gofiber/fiber#3056
File: middleware/encryptcookie/utils.go:20-23
Timestamp: 2024-07-01T03:44:03.672Z
Learning: Unit tests for key length enforcement in both `EncryptCookie` and `DecryptCookie` functions have been added to ensure robust validation and prevent potential runtime errors.
Learnt from: gaby
PR: gofiber/fiber#3056
File: middleware/encryptcookie/utils.go:20-23
Timestamp: 2024-10-08T19:06:06.583Z
Learning: Unit tests for key length enforcement in both `EncryptCookie` and `DecryptCookie` functions have been added to ensure robust validation and prevent potential runtime errors.
Learnt from: gaby
PR: gofiber/fiber#3056
File: middleware/encryptcookie/utils.go:51-54
Timestamp: 2024-10-08T19:06:06.583Z
Learning: Unit tests for key length enforcement in `DecryptCookie` have been added to ensure consistency and security in the encryption processes.
Learnt from: gaby
PR: gofiber/fiber#3056
File: middleware/encryptcookie/utils.go:51-54
Timestamp: 2024-07-01T03:33:22.283Z
Learning: Unit tests for key length enforcement in `DecryptCookie` have been added to ensure consistency and security in the encryption processes.
bytes_test.go (6)
Learnt from: ReneWerner87
PR: gofiber/fiber#3161
File: app.go:923-932
Timestamp: 2024-11-15T07:56:21.623Z
Learning: In the Fiber framework, breaking changes are acceptable when moving from version 2 to version 3, including modifications to method signatures such as in the `Test` method in `app.go`.
Learnt from: efectn
PR: gofiber/fiber#3162
File: hooks_test.go:228-228
Timestamp: 2024-12-13T08:14:22.851Z
Learning: In Go test files, prefer using the `require` methods from the `testify` package for assertions instead of manual comparisons and calls to `t.Fatal` or `t.Fatalf`.
Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/session/store.go:164-167
Timestamp: 2024-10-02T23:03:31.727Z
Learning: Unit tests in this project use testify require.
Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/session/store.go:164-167
Timestamp: 2024-10-08T19:06:06.583Z
Learning: Unit tests in this project use testify require.
Learnt from: sixcolors
PR: gofiber/fiber#2922
File: middleware/cors/utils.go:63-71
Timestamp: 2024-07-26T21:00:12.902Z
Learning: The project uses the testify/assert package for assertions in unit tests.
Learnt from: sixcolors
PR: gofiber/fiber#2922
File: middleware/cors/utils.go:63-71
Timestamp: 2024-10-08T19:06:06.583Z
Learning: The project uses the testify/assert package for assertions in unit tests.
strings_test.go (7)
Learnt from: ReneWerner87
PR: gofiber/fiber#3161
File: app.go:923-932
Timestamp: 2024-11-15T07:56:21.623Z
Learning: In the Fiber framework, breaking changes are acceptable when moving from version 2 to version 3, including modifications to method signatures such as in the `Test` method in `app.go`.
Learnt from: efectn
PR: gofiber/fiber#3162
File: hooks_test.go:228-228
Timestamp: 2024-12-13T08:14:22.851Z
Learning: In Go test files, prefer using the `require` methods from the `testify` package for assertions instead of manual comparisons and calls to `t.Fatal` or `t.Fatalf`.
Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/session/store.go:164-167
Timestamp: 2024-10-02T23:03:31.727Z
Learning: Unit tests in this project use testify require.
Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/session/store.go:164-167
Timestamp: 2024-10-08T19:06:06.583Z
Learning: Unit tests in this project use testify require.
Learnt from: sixcolors
PR: gofiber/fiber#2922
File: middleware/cors/utils.go:63-71
Timestamp: 2024-07-26T21:00:12.902Z
Learning: The project uses the testify/assert package for assertions in unit tests.
Learnt from: sixcolors
PR: gofiber/fiber#2922
File: middleware/cors/utils.go:63-71
Timestamp: 2024-10-08T19:06:06.583Z
Learning: The project uses the testify/assert package for assertions in unit tests.
Learnt from: juls0730
PR: gofiber/recipes#2710
File: tableflip/main.go:61-62
Timestamp: 2024-12-01T01:15:48.126Z
Learning: In the GoFiber `tableflip` recipe (`tableflip/main.go`), the implementation matches the upstream reference implementation. Future code suggestions should consider maintaining this alignment to ensure consistency.
🧬 Code Graph Analysis (1)
strings_test.go (1)
strings.go (2)
ToUpper(30-50)ToLower(8-27)
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🔇 Additional comments (5)
bytes_test.go (1)
14-18: Good addition of benchmark constants!The string constants provide consistent test data for benchmarking
ToLowerBytesandToUpperBytes. The chosen path string is realistic and representative of typical web application URLs.strings_test.go (4)
1-9: Excellent documentation update!The expanded header comment clearly describes the test suite's purpose and coverage, including the specific optimization thresholds being tested (15-24 bytes for SWAR). This helps future maintainers understand the test design.
31-155: Comprehensive test coverage!The test cases are exceptionally well-designed, covering:
- Edge cases and single characters
- Real-world HTTP methods and headers
- SWAR optimization thresholds (15-24 bytes)
- Position-specific variations
- Large strings up to 256 bytes
This provides excellent coverage for the ASCII case conversion functions.
179-202: Excellent edge case coverage!Testing all 128 ASCII values ensures complete coverage, and verifying that non-ASCII characters remain unchanged (µßäöü) confirms the functions are ASCII-only as intended.
204-254: Well-structured benchmarks with standard library comparison!The benchmarks properly:
- Call
b.ReportAllocs()to track allocations- Store results to prevent compiler optimizations
- Include standard library benchmarks for direct performance comparison
This enables accurate performance analysis of the ASCII-optimized implementations.
… functions, remove IfToUpper and IfToLower
|
ok understand because of #119 |
Enhance test cases for case conversion functions to boost coverage and performance benchmarks.
Remove
IfToUpperandIfToLowersinceToUpperandToLowernow have the same functionality.Summary by CodeRabbit
ToUpperandToLowerfunctions.