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@nao1215 nao1215 commented Aug 31, 2025

Summary by CodeRabbit

  • Tests

    • Standardized assertions across all test suites for clearer failures and consistency.
    • Expanded coverage, including empty CSV input handling and various compressed/streaming scenarios.
    • Strengthened validations of error conditions and messages without changing behavior.
  • Chores

    • Added testing dependencies to support the new assertion style.
    • No production code or public API changes; functionality remains unchanged.

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coderabbitai bot commented Aug 31, 2025

Walkthrough

Tests across multiple files were refactored to use Testify (assert/require) instead of manual checks. A new module dependency on Testify and its transitive deps was added in go.mod. One new test case for empty CSV input was introduced. No production code or public API changes.

Changes

Cohort / File(s) Summary
Test assertion migration
builder_test.go, column_inference_test.go, dump_options_test.go, file_test.go, stream_test.go, table_test.go, types_test.go
Replaced manual t.Errorf/t.Fatalf and equality/length checks with testify/assert and testify/require; standardized error handling and validations. Added an empty-CSV error test in streaming parser tests. No production code changes.
Dependencies
go.mod
Added direct dependency github.com/stretchr/testify v1.11.1 and indirect deps github.com/davecgh/go-spew v1.1.1, github.com/pmezard/go-difflib v1.0.0, gopkg.in/yaml.v3 v3.0.1.

Sequence Diagram(s)

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

Poem

I thump my paws, assert and require,
Tests now speak clearer, as logs retire.
With tidy deps in go.mod’s scroll,
I nibble carrots, coverage whole.
Empty CSV? We catch it, cheer!
Hop-hop—green checks drawing near. 🥕🐇

✨ Finishing Touches
  • 📝 Generate Docstrings
🧪 Generate unit tests
  • Create PR with unit tests
  • Post copyable unit tests in a comment
  • Commit unit tests in branch nchika/introduce-testify-assert

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@nao1215 nao1215 mentioned this pull request Aug 31, 2025
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@claude
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claude bot commented Aug 31, 2025

🔍 PR Review: Introduce testify

This PR introduces the testify assertion library to builder_test.go, migrating from standard Go testing assertions to more readable testify assertions. Here's my comprehensive review:

Positive Aspects

Code Quality & Best Practices:

  • Excellent consistency: The migration systematically replaces verbose standard library assertions with concise testify equivalents
  • Improved readability: Assertions like assert.Equal(t, "test.csv", builder.paths[0], "first path should be test.csv") are much more readable than the original if-statement based checks
  • Proper testify usage: Correctly uses assert vs require - require for critical checks that should stop test execution, assert for regular validations
  • Maintains parallel testing: All t.Parallel() calls are preserved, following Go testing best practices
  • Descriptive messages: Good use of descriptive error messages in assertions

Technical Implementation:

  • Consistent imports: Properly imports both assert and require packages
  • No breaking changes: The test logic remains identical, only the assertion style changes
  • Proper error handling: Uses require.NoError for critical operations like file creation and assert.NoError for less critical validations

📋 Alignment with CLAUDE.md Guidelines

✅ Follows project standards:

  • Test-Driven Development: Maintains existing comprehensive test coverage
  • Comments in English: All assertion messages are in English
  • Cross-platform support: No platform-specific changes introduced
  • Readable Test Code: Significantly improves test readability as promoted by t-wada methodology

🔍 Code Analysis

Before vs After Examples:

// Before - verbose and error-prone
if builder.paths[0] != "test.csv" {
    t.Errorf("paths[0] = %s, want test.csv", builder.paths[0])
}

// After - clear and concise  
assert.Equal(t, "test.csv", builder.paths[0], "first path should be test.csv")

Key Improvements:

  1. Reduced boilerplate: ~200 lines of verbose if-statements replaced with concise assertions
  2. Better error messages: Built-in diff output from testify vs manual string formatting
  3. Type safety: testify provides better type checking for assertions
  4. Maintenance: Easier to maintain and modify test assertions

🚀 Performance Considerations

  • Minimal impact: testify adds negligible overhead compared to standard library
  • Already included: github.com/stretchr/testify v1.11.1 is already in go.mod, so no new dependencies
  • Parallel tests: Maintains t.Parallel() for optimal test execution speed

🔐 Security Considerations

  • No security implications: Pure test code changes with no runtime impact
  • Dependency management: Uses established, well-maintained testify library already in project

🧪 Test Coverage

Strengths:

  • Complete migration: All relevant assertions in builder_test.go have been migrated
  • Preserves test logic: No test cases removed or logic changed
  • Consistent style: Uniform assertion style throughout the file

Considerations:

  • Incremental migration: This only covers builder_test.go - consider migrating other test files for consistency
  • Mixed styles: Other test files (like filesql_test.go) already use testify, so this brings builder_test.go in line

📝 Minor Suggestions

  1. Consider batch migration: Since testify is already used in other test files, consider migrating remaining files in future PRs for consistency

  2. Assertion choice consistency: Generally good use of require vs assert, but ensure:

    • Use require for setup operations that must succeed (file creation, etc.)
    • Use assert for test validations that can continue on failure

Recommendation

APPROVE - This is an excellent refactoring that:

  • Improves code readability significantly
  • Follows project guidelines and Go testing best practices
  • Uses already-included dependencies appropriately
  • Maintains all existing test functionality
  • Makes tests easier to maintain and understand

The changes are low-risk, high-value improvements that align perfectly with the project's commitment to readable test code. Great work! 🎉


Generated with Claude Code - following filesql project guidelines from CLAUDE.md

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Code Metrics Report

main (cac524a) #33 (fed95bd) +/-
Coverage 84.0% 83.7% -0.3%
Test Execution Time 52s 1m53s +1m1s
Details
  |                     | main (cac524a) | #33 (fed95bd) |  +/-  |
  |---------------------|----------------|---------------|-------|
- | Coverage            |          84.0% |         83.7% | -0.3% |
  |   Files             |              9 |             9 |     0 |
  |   Lines             |           1663 |          1663 |     0 |
- |   Covered           |           1397 |          1393 |    -4 |
- | Test Execution Time |            52s |         1m53s | +1m1s |

Reported by octocov

@nao1215 nao1215 merged commit 230eb62 into main Aug 31, 2025
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Actionable comments posted: 4

Caution

Some comments are outside the diff and can’t be posted inline due to platform limitations.

⚠️ Outside diff range comments (10)
table_test.go (1)

139-146: Parallel subtests capture the loop variable; add tt := tt to avoid flakiness.

t.Parallel() inside the loop without rebinding tt can race and read the wrong case values.

Apply this fix:

 for _, tt := range tests {
+    tt := tt
     t.Run(tt.name, func(t *testing.T) {
         t.Parallel()
         result := tableFromFilePath(tt.filePath)
         assert.Equal(t, tt.expected, result, "tableFromFilePath failed for %s", tt.filePath)
     })
 }
types_test.go (1)

67-74: Rebind tt when using parallel subtests in loops.

t.Parallel() within these t.Run loops needs tt := tt to prevent capturing the final iterator value.

Apply in both loops:

 for _, tt := range tests {
+    tt := tt
     t.Run(tt.name, func(t *testing.T) {
         t.Parallel()
         result := tt.header1.equal(tt.header2)
         assert.Equal(t, tt.expected, result, "Header equality check failed")
     })
 }
 for _, tt := range tests {
+    tt := tt
     t.Run(tt.name, func(t *testing.T) {
         t.Parallel()
         result := tt.record1.equal(tt.record2)
         assert.Equal(t, tt.expected, result, "Record equality check failed")
     })
 }

Also applies to: 135-142

builder_test.go (1)

373-375: Avoid Go 1.22+ only syntax: replace for i := range 10000

range over an int requires Go 1.22+. Use a classic for-loop to keep broader compatibility.

Apply:

- for i := range 10000 { // Full test on GitHub Actions
+ for i := 0; i < 10000; i++ { // Full test on GitHub Actions
   fmt.Fprintf(&data, "%d,name_%d,%d\n", i, i, i*10)
 }
stream_test.go (1)

93-113: Make the “gzip compressed CSV” test actually exercise decompression

Previously it used uncompressed data with FileTypeCSV. Compress the payload and set FileTypeCSVGZ.

 t.Run("gzip compressed CSV", func(t *testing.T) {
   t.Parallel()
-  // Create gzip compressed CSV data
-  originalData := "name,age\nAlice,30\nBob,25\n"
-  var buf bytes.Buffer
-
-  // For this test, we'll use uncompressed data but specify the compressed type
-  // to test the decompression logic path
-  reader := strings.NewReader(originalData)
-
-  // Note: This will fail because the data is not actually gzip compressed
-  // but the test demonstrates the compression handling logic
-  parser := newStreamingParser(FileTypeCSV, "users", 1024) // Use uncompressed for now
-  table, err := parser.parseFromReader(reader)
+  // Create gzip compressed CSV data
+  originalData := "name,age\nAlice,30\nBob,25\n"
+  var gzBuf bytes.Buffer
+  zw := gzip.NewWriter(&gzBuf)
+  _, _ = zw.Write([]byte(originalData))
+  _ = zw.Close()
+
+  reader := bytes.NewReader(gzBuf.Bytes())
+  parser := newStreamingParser(FileTypeCSVGZ, "users", 1024)
+  table, err := parser.parseFromReader(reader)
   require.NoError(t, err, "ParseFromReader() failed")
 
   records := table.getRecords()
   assert.Len(t, records, 2, "Records length mismatch")
-
-  _ = buf // Prevent unused variable warning
 })
file_test.go (6)

91-99: Fix parallel subtest capture: close over a copy of loop variable

Without rebind, t.Parallel() subtests can read the wrong tt.

- for _, tt := range tests {
-   t.Run(tt.name, func(t *testing.T) {
+ for _, tt := range tests {
+   tt := tt
+   t.Run(tt.name, func(t *testing.T) {
      t.Parallel()
      file := newFile(tt.path)
      assert.Equal(t, tt.expected, file.getFileType(), "File type mismatch")
      assert.Equal(t, tt.path, file.getPath(), "File path mismatch")
   })
 }

137-144: Same loop var capture fix for TestFile_IsCompressed

- for _, tt := range tests {
-   t.Run(tt.name, func(t *testing.T) {
+ for _, tt := range tests {
+   tt := tt
+   t.Run(tt.name, func(t *testing.T) {
      t.Parallel()
      file := newFile(tt.path)
      assert.Equal(t, tt.expected, file.isCompressed(), "Compression check failed")
   })
 }

200-210: Same fix for TestFile_CompressionTypes

- for _, tt := range tests {
-   t.Run(tt.name, func(t *testing.T) {
+ for _, tt := range tests {
+   tt := tt
+   t.Run(tt.name, func(t *testing.T) {
      t.Parallel()
      file := newFile(tt.path)
      assert.Equal(t, tt.isGZ, file.isGZ(), "IsGZ() check failed")
      assert.Equal(t, tt.isBZ2, file.isBZ2(), "IsBZ2() check failed")
      assert.Equal(t, tt.isXZ, file.isXZ(), "IsXZ() check failed")
      assert.Equal(t, tt.isZSTD, file.isZSTD(), "IsZSTD() check failed")
   })
 }

401-409: Same fix for TestTableFromFilePath

- for _, tt := range tests {
-   t.Run(tt.name, func(t *testing.T) {
+ for _, tt := range tests {
+   tt := tt
+   t.Run(tt.name, func(t *testing.T) {
      t.Parallel()
      result := tableFromFilePath(tt.filePath)
      assert.Equal(t, tt.expected, result, "tableFromFilePath failed")
   })
 }

753-760: Same fix for TestFileTypeExtension subtests

tt must be rebound before starting parallel subtests.

- for _, tt := range tests {
-   t.Run(tt.name, func(t *testing.T) {
+ for _, tt := range tests {
+   tt := tt
+   t.Run(tt.name, func(t *testing.T) {
      t.Parallel()
      if got := tt.fileType.extension(); got != tt.expected {
        t.Errorf("FileType.extension() = %v, want %v", got, tt.expected)
      }
   })
 }

1001-1023: Same fix for TestCompressionDetection_EdgeCases

Parallel subtests need loop variable capture.

- for _, tc := range testCases {
-   t.Run(tc.name, func(t *testing.T) {
+ for _, tc := range testCases {
+   tc := tc
+   t.Run(tc.name, func(t *testing.T) {
      t.Parallel()
      file := newFile(tc.filePath)
      ...
   })
 }
🧹 Nitpick comments (10)
go.mod (1)

8-8: Testify dependency addition looks good; run tidy to prune and normalize requires.

Adding testify and its common indirects is appropriate for the assertion refactor. Recommend running go mod tidy to consolidate multiple require blocks and drop any now-unreferenced indirects.

Also applies to: 18-18, 31-31, 51-51

types_test.go (1)

158-163: Optional: parallelize these subtests safely.

You can add t.Parallel() inside this loop too for speed; if you do, also add tt := tt before t.Run.

column_inference_test.go (3)

110-114: Optional: enable parallel subtests with loop var rebinding.

Add tt := tt then t.Parallel() in the t.Run body to speed this table-driven test.

 for _, tt := range tests {
+    tt := tt
     t.Run(tt.name, func(t *testing.T) {
+        t.Parallel()
         result := inferColumnType(tt.values)
         assert.Equal(t, tt.expected, result, "inferColumnType failed for values: %v", tt.values)
     })
 }

121-146: Subtests could run in parallel.

These three t.Run blocks don’t share mutable state; consider t.Parallel() inside each to reduce wall time.

Also applies to: 147-158, 160-183


224-228: Optional: parallelize isDatetime table tests (with tt rebinding).

Safe speed-up if you add tt := tt before t.Run and t.Parallel() inside.

builder_test.go (2)

241-246: Test name vs. setup mismatch: use a compressed file type

Subtest says “compressed type specification” but uses FileTypeCSV. Use a compressed type to reflect intent.

- builder := NewBuilder().AddReader(reader, "logs", FileTypeCSV)
+ builder := NewBuilder().AddReader(reader, "logs", FileTypeCSVGZ)

682-689: Simplify “if err != nil { require.NoError(...) }” patterns

These branches are redundant; require.NoError already fails the test. Direct calls are clearer.

Example transformation:

- if err != nil {
-   require.NoError(t, err, "operation should succeed")
- }
+ require.NoError(t, err, "operation should succeed")

Applies to the marked ranges and similar occurrences in this file.

Also applies to: 746-754, 799-807, 831-836, 869-879, 895-905, 934-941, 1491-1495, 1534-1538, 1698-1704, 1739-1743, 1779-1783, 1820-1824, 1856-1859

stream_test.go (2)

44-49: Use testify for error assertion on empty CSV

Make the intention explicit and fail fast.

- _, err := parser.parseFromReader(reader)
- if err == nil {
-   t.Error("ParseFromReader() should fail for empty data")
- }
+ _, err := parser.parseFromReader(reader)
+ require.Error(t, err, "ParseFromReader() should fail for empty data")

3-13: Add gzip import for compressed CSV test

 import (
 	"bytes"
+	"compress/gzip"
 	"os"
 	"path/filepath"
 	"strings"
 	"testing"
file_test.go (1)

515-522: Comment label is misleading (xlsx is supported here)

The section header says “Unsupported formats” but includes test.xlsx with true. Clarify the comment.

- // Unsupported formats
+ // Other formats and edge cases (xlsx supported; txt/json/xml unsupported)
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📥 Commits

Reviewing files that changed from the base of the PR and between cac524a and 13070fa.

⛔ Files ignored due to path filters (1)
  • go.sum is excluded by !**/*.sum
📒 Files selected for processing (8)
  • builder_test.go (79 hunks)
  • column_inference_test.go (6 hunks)
  • dump_options_test.go (11 hunks)
  • file_test.go (17 hunks)
  • go.mod (4 hunks)
  • stream_test.go (7 hunks)
  • table_test.go (6 hunks)
  • types_test.go (6 hunks)
🧰 Additional context used
📓 Path-based instructions (2)
**/*.go

📄 CodeRabbit inference engine (.cursorrules)

**/*.go: Do not use global variables; manage state via function arguments and return values
Follow Golang coding rules per Effective Go
Public (exported) functions, variables, and struct fields must have documentation comments following go doc rules
Remove duplicate code after completing work
Write code comments in English
Provide user-friendly documentation comments with detailed explanations and example code for public functions
Ensure cross-platform compatibility (e.g., use filepath.Join instead of manual path concatenation; avoid hardcoded "\n")

**/*.go: Write code comments in English
Provide detailed, user-friendly documentation comments (godoc) for all public functions so usage is clear
Do not use global variables; manage state via function arguments/returns
Follow Effective Go (Golang coding rules)
Add comments for all exported (public) functions, variables, and struct fields following godoc rules
Remove duplicate code after implementation
Ensure cross-platform compatibility: use filepath.Join for paths and avoid hardcoded "\n" line breaks
Copilot: Ensure generated code follows Effective Go
Copilot: Include proper godoc comments for all public APIs
Copilot: Use filepath.Join() for path operations for cross-platform compatibility

**/*.go: Write code comments in English
Provide user-friendly documentation comments with detailed explanations and examples for public functions
Do not use global variables; manage state via function inputs/outputs
Follow Golang coding rules per Effective Go
Write comments for all public functions, variables, and struct fields per go doc rules
Remove duplicate code after completing work
Ensure cross-platform compatibility (e.g., use filepath.Join instead of manual path concatenation; avoid hardcoded "\n")

Files:

  • builder_test.go
  • types_test.go
  • table_test.go
  • column_inference_test.go
  • dump_options_test.go
  • file_test.go
  • stream_test.go
**/*_test.go

📄 CodeRabbit inference engine (.cursorrules)

**/*_test.go: Keep test code readable; avoid over-DRY and favor clarity
Use t.Run to structure tests and make inputs/expected outputs explicit
Use t.Parallel in tests where possible

**/*_test.go: Keep test code readable; avoid over-DRY patterns that obscure intent
Structure tests with t.Run subtests and make inputs/expected outputs explicit
Use t.Parallel() to run tests in parallel when possible
Copilot: Suggest parallel test execution with t.Parallel() where appropriate

**/*_test.go: Keep test code readable; avoid excessive DRY
Use t.Run with explicit inputs/expected outputs to clarify test intent
Use t.Parallel() to run tests in parallel whenever possible

Files:

  • builder_test.go
  • types_test.go
  • table_test.go
  • column_inference_test.go
  • dump_options_test.go
  • file_test.go
  • stream_test.go
🧠 Learnings (11)
📓 Common learnings
Learnt from: CR
PR: nao1215/filesql#0
File: .github/copilot-instructions.md:0-0
Timestamp: 2025-08-31T12:53:10.431Z
Learning: Applies to **/*_test.go : Structure tests with t.Run subtests and make inputs/expected outputs explicit
Learnt from: CR
PR: nao1215/filesql#0
File: CLAUDE.md:0-0
Timestamp: 2025-08-31T12:53:42.359Z
Learning: Applies to **/*_test.go : Use t.Run with explicit inputs/expected outputs to clarify test intent
📚 Learning: 2025-08-31T12:53:10.431Z
Learnt from: CR
PR: nao1215/filesql#0
File: .github/copilot-instructions.md:0-0
Timestamp: 2025-08-31T12:53:10.431Z
Learning: Applies to **/*_test.go : Structure tests with t.Run subtests and make inputs/expected outputs explicit

Applied to files:

  • builder_test.go
  • types_test.go
  • table_test.go
  • column_inference_test.go
  • dump_options_test.go
  • file_test.go
  • stream_test.go
📚 Learning: 2025-08-31T12:53:42.359Z
Learnt from: CR
PR: nao1215/filesql#0
File: CLAUDE.md:0-0
Timestamp: 2025-08-31T12:53:42.359Z
Learning: Applies to **/*_test.go : Use t.Run with explicit inputs/expected outputs to clarify test intent

Applied to files:

  • builder_test.go
  • types_test.go
  • table_test.go
  • column_inference_test.go
  • dump_options_test.go
  • file_test.go
📚 Learning: 2025-08-31T12:52:28.036Z
Learnt from: CR
PR: nao1215/filesql#0
File: .cursorrules:0-0
Timestamp: 2025-08-31T12:52:28.036Z
Learning: Applies to **/*_test.go : Use t.Run to structure tests and make inputs/expected outputs explicit

Applied to files:

  • builder_test.go
  • types_test.go
  • table_test.go
  • column_inference_test.go
  • dump_options_test.go
  • file_test.go
📚 Learning: 2025-08-31T12:52:28.036Z
Learnt from: CR
PR: nao1215/filesql#0
File: .cursorrules:0-0
Timestamp: 2025-08-31T12:52:28.036Z
Learning: Applies to **/*_test.go : Use t.Parallel in tests where possible

Applied to files:

  • builder_test.go
  • types_test.go
  • table_test.go
  • dump_options_test.go
  • file_test.go
📚 Learning: 2025-08-31T12:53:10.431Z
Learnt from: CR
PR: nao1215/filesql#0
File: .github/copilot-instructions.md:0-0
Timestamp: 2025-08-31T12:53:10.431Z
Learning: Applies to **/*_test.go : Copilot: Suggest parallel test execution with t.Parallel() where appropriate

Applied to files:

  • builder_test.go
  • types_test.go
  • table_test.go
  • dump_options_test.go
  • file_test.go
📚 Learning: 2025-08-31T12:53:10.431Z
Learnt from: CR
PR: nao1215/filesql#0
File: .github/copilot-instructions.md:0-0
Timestamp: 2025-08-31T12:53:10.431Z
Learning: Applies to **/*_test.go : Use t.Parallel() to run tests in parallel when possible

Applied to files:

  • builder_test.go
  • dump_options_test.go
  • file_test.go
📚 Learning: 2025-08-31T12:53:42.359Z
Learnt from: CR
PR: nao1215/filesql#0
File: CLAUDE.md:0-0
Timestamp: 2025-08-31T12:53:42.359Z
Learning: Applies to **/*_test.go : Use t.Parallel() to run tests in parallel whenever possible

Applied to files:

  • builder_test.go
  • dump_options_test.go
  • file_test.go
📚 Learning: 2025-08-31T12:53:10.431Z
Learnt from: CR
PR: nao1215/filesql#0
File: .github/copilot-instructions.md:0-0
Timestamp: 2025-08-31T12:53:10.431Z
Learning: Applies to **/*_test.go : Keep test code readable; avoid over-DRY patterns that obscure intent

Applied to files:

  • table_test.go
  • file_test.go
📚 Learning: 2025-08-31T12:53:42.359Z
Learnt from: CR
PR: nao1215/filesql#0
File: CLAUDE.md:0-0
Timestamp: 2025-08-31T12:53:42.359Z
Learning: Applies to **/*_test.go : Keep test code readable; avoid excessive DRY

Applied to files:

  • table_test.go
  • file_test.go
📚 Learning: 2025-08-31T12:52:28.036Z
Learnt from: CR
PR: nao1215/filesql#0
File: .cursorrules:0-0
Timestamp: 2025-08-31T12:52:28.036Z
Learning: Applies to **/*_test.go : Keep test code readable; avoid over-DRY and favor clarity

Applied to files:

  • table_test.go
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  • GitHub Check: Unit test (linux) (ubuntu-latest, 1.24)
  • GitHub Check: Unit test (linux) (macos-latest, 1.24)
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🔇 Additional comments (8)
table_test.go (3)

7-7: Adoption of Testify assert is appropriate.

Consistent with the PR goal; import scope is limited to tests.


24-31: Assertions read clearly and preserve intent.

Straightforward migration from manual checks; no behavior change.


50-51: Equality assertions LGTM.

Good coverage of name, header, count, and values.

Also applies to: 56-57, 64-65, 74-75, 85-86

dump_options_test.go (2)

6-6: Testify import aligns with refactor goal.

Scope restricted to tests; fine.


190-192: Direct option assertions look good.

Nice clarity on defaults, immutability, and chaining behavior.

Also applies to: 201-208, 217-224, 312-318

types_test.go (2)

6-6: Testify import LGTM.

Matches the test style elsewhere.


18-18: Element-wise and length assertions are clear.

Keeps intent explicit without over-DRYing.

Also applies to: 21-21, 86-86, 89-89

column_inference_test.go (1)

6-8: Good use of assert/require mix.

require.Len for structure checks and assert for field equality is the right split.

Comment on lines +416 to +420
rows, err := db.QueryContext(ctx, "SELECT * FROM users")
assert.NoError(t, err, "Query should succeed")
defer rows.Close()
assert.NoError(t, rows.Err(), "Rows should not have errors")
_ = db.Close()
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🛠️ Refactor suggestion

Use require before deferring on rows to prevent nil deref on failure

If the query fails, rows may be nil and defer rows.Close() can panic.

- rows, err := db.QueryContext(ctx, "SELECT * FROM users")
- assert.NoError(t, err, "Query should succeed")
- defer rows.Close()
+ rows, err := db.QueryContext(ctx, "SELECT * FROM users")
+ require.NoError(t, err, "Query should succeed")
+ defer rows.Close()
  assert.NoError(t, rows.Err(), "Rows should not have errors")
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
rows, err := db.QueryContext(ctx, "SELECT * FROM users")
assert.NoError(t, err, "Query should succeed")
defer rows.Close()
assert.NoError(t, rows.Err(), "Rows should not have errors")
_ = db.Close()
rows, err := db.QueryContext(ctx, "SELECT * FROM users")
require.NoError(t, err, "Query should succeed")
defer rows.Close()
assert.NoError(t, rows.Err(), "Rows should not have errors")
_ = db.Close()
🤖 Prompt for AI Agents
In builder_test.go around lines 416 to 420, the test defers rows.Close() before
asserting the query succeeded which can panic if rows is nil; change the order
to assert/require that err is nil (use require.NoError or require.NoErrorf to
stop the test on failure) immediately after db.QueryContext, then defer
rows.Close() only after the require passes (and keep checking rows.Err() after
iteration), ensuring any db.Close() remains after rows.Close() handling.

Comment on lines +448 to 453
for _, table := range []string{"orders", "products"} {
rows, err := db.QueryContext(ctx, "SELECT * FROM "+table) // #nosec G202 -- table name is safe
assert.NoError(t, err, "Query %s should succeed", table)
assert.NoError(t, rows.Err(), "Rows should not have errors for %s", table)
_ = rows.Close() // Close immediately in the loop
}
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🛠️ Refactor suggestion

Strengthen query assertion to avoid nil deref in loop

Same issue inside the loop; fail fast on query error.

- rows, err := db.QueryContext(ctx, "SELECT * FROM "+table) // #nosec G202 -- table name is safe
- assert.NoError(t, err, "Query %s should succeed", table)
+ rows, err := db.QueryContext(ctx, "SELECT * FROM "+table) // #nosec G202 -- table name is safe
+ require.NoError(t, err, "Query %s should succeed", table)
  assert.NoError(t, rows.Err(), "Rows should not have errors for %s", table)
  _ = rows.Close() // Close immediately in the loop
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
for _, table := range []string{"orders", "products"} {
rows, err := db.QueryContext(ctx, "SELECT * FROM "+table) // #nosec G202 -- table name is safe
assert.NoError(t, err, "Query %s should succeed", table)
assert.NoError(t, rows.Err(), "Rows should not have errors for %s", table)
_ = rows.Close() // Close immediately in the loop
}
for _, table := range []string{"orders", "products"} {
rows, err := db.QueryContext(ctx, "SELECT * FROM "+table) // #nosec G202 -- table name is safe
require.NoError(t, err, "Query %s should succeed", table)
assert.NoError(t, rows.Err(), "Rows should not have errors for %s", table)
_ = rows.Close() // Close immediately in the loop
}
🤖 Prompt for AI Agents
In builder_test.go around lines 448 to 453, the loop uses assert.NoError for the
db.QueryContext call which doesn't stop execution on failure and can lead to a
nil rows dereference; change the check to fail fast (either replace
assert.NoError with require.NoError or add an immediate if err != nil {
t.Fatalf(...)} after the query) so the test aborts when QueryContext returns an
error before calling rows.Err() or rows.Close().

Comment on lines +600 to +606
rows, err := db.QueryContext(ctx, "SELECT name FROM sqlite_master WHERE type='table'")
assert.NoError(t, err, "should be able to query database")
defer rows.Close()
assert.NoError(t, rows.Err(), "rows should not have errors")

_ = db.Close()
// Clean up temp files
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🛠️ Refactor suggestion

Use require before deferring rows.Close()

Avoid potential nil deref when the query fails.

- rows, err := db.QueryContext(ctx, "SELECT name FROM sqlite_master WHERE type='table'")
- assert.NoError(t, err, "should be able to query database")
- defer rows.Close()
+ rows, err := db.QueryContext(ctx, "SELECT name FROM sqlite_master WHERE type='table'")
+ require.NoError(t, err, "should be able to query database")
+ defer rows.Close()
  assert.NoError(t, rows.Err(), "rows should not have errors")
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
rows, err := db.QueryContext(ctx, "SELECT name FROM sqlite_master WHERE type='table'")
assert.NoError(t, err, "should be able to query database")
defer rows.Close()
assert.NoError(t, rows.Err(), "rows should not have errors")
_ = db.Close()
// Clean up temp files
rows, err := db.QueryContext(ctx, "SELECT name FROM sqlite_master WHERE type='table'")
require.NoError(t, err, "should be able to query database")
defer rows.Close()
assert.NoError(t, rows.Err(), "rows should not have errors")
_ = db.Close()
// Clean up temp files
🤖 Prompt for AI Agents
In builder_test.go around lines 600 to 606, the test calls db.QueryContext and
immediately defers rows.Close() before asserting no error, which risks a nil
dereference if the query failed; change to assert the query returned no error
using require.NoError(t, err) (or if using testify require) before deferring
rows.Close(), then check rows.Err() with require.NoError as appropriate so defer
is only set when rows is non-nil.

Comment on lines 39 to 45
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
t.Parallel()
if got := tt.format.String(); got != tt.want {
t.Errorf("OutputFormat.String() = %v, want %v", got, tt.want)
}
got := tt.format.String()
assert.Equal(t, tt.want, got, "OutputFormat.String() returned unexpected value")
})
}
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⚠️ Potential issue

Fix loop variable capture with parallel subtests.

All these subtest loops call t.Parallel() but don’t rebind tt, leading to nondeterministic failures.

Patch each loop:

 for _, tt := range tests {
+    tt := tt
     t.Run(tt.name, func(t *testing.T) {
         t.Parallel()
         got := tt.format.String()
         assert.Equal(t, tt.want, got, "OutputFormat.String() returned unexpected value")
     })
 }

Repeat similarly for the other loops (Extension, CompressionType.String, CompressionType.Extension, FileExtension, and String edge cases), adding tt := tt immediately inside each for _, tt := range tests { ... }.

Also applies to: 78-84, 127-133, 176-182, 267-276, 296-302

🤖 Prompt for AI Agents
In dump_options_test.go around lines 39-45 (and likewise for ranges 78-84,
127-133, 176-182, 267-276, 296-302), the subtests call t.Parallel() but capture
the loop variable tt directly, causing racey/nondeterministic failures; fix by
rebinding the loop variable inside each loop body (i.e., add tt := tt
immediately after the for ... { and before t.Run) so each subtest gets its own
copy of tt before calling t.Parallel().

@nao1215 nao1215 deleted the nchika/introduce-testify-assert branch September 2, 2025 11:44
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2 participants