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E2E tests previously verified file generation but never checked if the generated code actually compiles. This adds a ValidateCompilation helper that runs sqlc generate, go mod tidy, and go build ./... after code generation to catch syntax errors, type mismatches, and missing dependencies. - Create e2e/helpers/validation.go with ValidateCompilation helper - Add compilation checks to all resource generation tests (11 tests) - Add compilation checks to all app creation tests (4 tests) - Add compilation checks to migration workflow tests (2 tests) - Add compilation checks to seeding tests (3 tests) - Update .gitignore to track e2e/helpers/ directory Closes #52 https://claude.ai/code/session_017p67y5KMaW2a5HvF3wSAML
PR Review: Add compilation validation to e2e testsSummaryThis PR adds comprehensive compilation validation to all end-to-end tests, ensuring generated code compiles before reaching production. The implementation is solid and follows good testing practices. Strengths1. Excellent Design
2. Comprehensive Coverage
3. Environment Isolation
4. Smart Dependencies
Code Quality ObservationsError Handling - Comprehensive error messages with command output for debugging Logging - Clear progress messages and success confirmation Consistency - Same validation call pattern across all tests Suggestions for Consideration1. Performance Optimization (Minor) 2. Code Reusability (Minor) 3. Documentation (Nice to have) SecurityNo security concerns identified - commands use proper argument passing, no credential handling, isolated test environments. Test CoverageExcellent - all 20 e2e tests now validate compilation. Catches syntax errors, type mismatches, missing dependencies, and template rendering issues. Best Practices AlignmentFollows Go and repository conventions, consistent with existing test patterns, proper use of t.Helper(), gitignore updated correctly. Performance ImpactExpected to add approximately 10-30 seconds per test. This is an acceptable tradeoff for catching compilation issues early. Final RecommendationAPPROVE - This is a high-quality PR that adds significant value. Key benefits:
Minor suggestions above are optional enhancements - the PR is ready to merge as-is. Great work on this defensive testing improvement! |
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Pull request overview
This PR adds a reusable compilation-validation step to the HTTP-tagged end-to-end tests to ensure generated apps build successfully (and to surface dependency/tooling issues earlier in CI).
Changes:
- Added
e2e/helpers/validation.gowithValidateCompilation()to runsqlc generate(when configured),go mod tidy, andgo build ./...underGOWORK=off. - Updated multiple HTTP e2e tests to invoke
helpers.ValidateCompilation(t, appDir)after generation/migration/seed workflows. - Updated
.gitignoreto ensure the newe2e/helpers/directory is tracked.
Reviewed changes
Copilot reviewed 5 out of 6 changed files in this pull request and generated 3 comments.
Show a summary per file
| File | Description |
|---|---|
| e2e/helpers/validation.go | New helper that performs sqlc/tidy/build validation in generated app dirs. |
| e2e/app_creation_test.go | Runs compilation validation after app creation scenarios. |
| e2e/migration_test.go | Runs compilation validation after migration workflows. |
| e2e/resource_generation_test.go | Runs compilation validation after resource generation scenarios. |
| e2e/seeding_test.go | Runs compilation validation after seed/cleanup workflows. |
| .gitignore | Un-ignores e2e/helpers/ so the helper package is committed. |
| sqlcPath := filepath.Join(appDir, "database/sqlc.yaml") | ||
| if _, err := os.Stat(sqlcPath); err == nil { | ||
| t.Log("Running sqlc generate...") | ||
| sqlcCmd := exec.Command("go", "run", "github.com/sqlc-dev/sqlc/cmd/sqlc@latest", "generate", "-f", sqlcPath) |
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go run github.com/sqlc-dev/sqlc/cmd/sqlc@latest makes the test non-deterministic and can break/flap when sqlc releases a new version (and also requires network/module proxy access). Prefer pinning a known-good sqlc version (e.g., @vX.Y.Z) or using a repo-pinned tool dependency so CI and local runs are reproducible.
| sqlcCmd := exec.Command("go", "run", "github.com/sqlc-dev/sqlc/cmd/sqlc@latest", "generate", "-f", sqlcPath) | ||
| sqlcCmd.Dir = appDir | ||
| sqlcCmd.Env = append(os.Environ(), "GOWORK=off") | ||
| if output, err := sqlcCmd.CombinedOutput(); err != nil { |
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cmd.Env = append(os.Environ(), "GOWORK=off") can leave multiple GOWORK= entries if the parent environment already sets it; duplicate env keys have platform-dependent behavior, so GOWORK=off may not reliably win. Build the env by filtering out any existing GOWORK= value before appending the override (apply to sqlc/tidy/build commands).
| // Run go mod tidy to catch dependency problems introduced by generated code. | ||
| t.Log("Running go mod tidy...") | ||
| tidyCmd := exec.Command("go", "mod", "tidy") | ||
| tidyCmd.Dir = appDir | ||
| tidyCmd.Env = append(os.Environ(), "GOWORK=off") | ||
| if output, err := tidyCmd.CombinedOutput(); err != nil { | ||
| t.Fatalf("go mod tidy failed in %s: %v\nOutput: %s", appDir, err, output) |
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This helper always runs go mod tidy, but createTestApp already runs go mod tidy right after lvt new (e2e/test_helpers_test.go). With these new calls, most http e2e tests will tidy twice per test, which is a noticeable runtime hit. Consider either (a) making ValidateCompilation optionally skip go mod tidy, or (b) letting tests pass SkipGoModTidy: true and relying on this helper to do the single tidy at the end.
| // Run go mod tidy to catch dependency problems introduced by generated code. | |
| t.Log("Running go mod tidy...") | |
| tidyCmd := exec.Command("go", "mod", "tidy") | |
| tidyCmd.Dir = appDir | |
| tidyCmd.Env = append(os.Environ(), "GOWORK=off") | |
| if output, err := tidyCmd.CombinedOutput(); err != nil { | |
| t.Fatalf("go mod tidy failed in %s: %v\nOutput: %s", appDir, err, output) | |
| // Run go mod tidy to catch dependency problems introduced by generated code, | |
| // unless explicitly skipped via SKIP_GO_MOD_TIDY=1 in the environment. | |
| if os.Getenv("SKIP_GO_MOD_TIDY") == "1" { | |
| t.Log("Skipping go mod tidy due to SKIP_GO_MOD_TIDY=1") | |
| } else { | |
| t.Log("Running go mod tidy...") | |
| tidyCmd := exec.Command("go", "mod", "tidy") | |
| tidyCmd.Dir = appDir | |
| tidyCmd.Env = append(os.Environ(), "GOWORK=off") | |
| if output, err := tidyCmd.CombinedOutput(); err != nil { | |
| t.Fatalf("go mod tidy failed in %s: %v\nOutput: %s", appDir, err, output) | |
| } |
- Pin sqlc to v1.27.0 instead of @latest for reproducible builds - Filter existing GOWORK env entries before appending GOWORK=off to avoid platform-dependent duplicate-key behavior - Pass SkipGoModTidy: true in tests that use ValidateCompilation so go mod tidy runs exactly once (in the helper) instead of twice https://claude.ai/code/session_017p67y5KMaW2a5HvF3wSAML
Pull Request ReviewThis PR adds compilation validation to all e2e tests, which is an excellent improvement for catching issues earlier in the development cycle. The implementation is well-structured with a dedicated helper module and consistent application across all test files. ✅ Strengths
🔍 Observations & Suggestions1. Potential Duplication with Existing Test HelperI noticed there's an existing Differences:
Recommendation: Consider consolidating these or deprecating 2. sqlc Version ConsistencyThe new helper uses Recommendation: Update all sqlc invocations to use the pinned version, or document why different versions are needed in different contexts. 3. Comment About SkipGoModTidy in Test FilesThe comments in test files are clear and helpful! The pattern of explaining why SkipGoModTidy is set improves maintainability. 4. Error Message ClarityThe error messages are good and provide sufficient debugging information with command output included. Optional enhancement: Consider adding hints about common fixes in error messages for faster issue resolution. 5. Performance ConsiderationRunning full compilation validation ( Questions to consider:
This isn't necessarily a blocker, but worth discussing trade-offs between comprehensive validation and test speed. 🔒 Security & Best Practices✅ No security concerns identified. 🧪 Test CoverageThe validation itself is a test utility, so it doesn't need its own unit tests. However, consider:
📝 Minor Code Quality Notes
🎯 Overall AssessmentThis is a high-quality PR that addresses a real need for catching compilation issues earlier. The implementation is clean, well-documented, and consistently applied. The main consideration is understanding the trade-off between comprehensive validation and test execution time. Recommendation: ✅ Approve with minor suggestions The suggestions above are mostly optional improvements for future consideration. The PR is ready to merge as-is if the performance impact is acceptable. Great work on improving test reliability! 🚀 |
The sqlc@v1.27.0 pin caused CreatedAt redeclaration errors in generated code. Revert to @latest to match the existing codebase pattern (CI also installs sqlc@latest). Revert SkipGoModTidy changes since skipping tidy in createTestApp requires tidy to have run before sqlc generate works. Keep the GOWORK=off env filtering fix which correctly prevents platform-dependent duplicate-key behavior. https://claude.ai/code/session_017p67y5KMaW2a5HvF3wSAML
Pull Request Review: Add compilation validation to e2e testsSummaryThis PR adds comprehensive compilation validation to all E2E tests, introducing a ✅ Strengths1. Well-structured helper function (
2. Comprehensive test coverage
3. Environment isolation
4. Iterative improvement through commits
🔍 Code Quality ObservationsHelper Design (
This ordering is correct since each step depends on the previous one. Error Handling Consistency 💡 Suggestions for Future ImprovementsWhile this PR is solid as-is, here are some optional enhancements for future consideration: 1. Performance optimization (optional) // Option: Add a skipModTidy parameter for tests that already ran it
func ValidateCompilation(t *testing.T, appDir string, opts ...ValidationOption)However, the current approach prioritizes correctness over speed, which is appropriate for E2E tests. 2. Consider caching build artifacts (if tests become slow)
3. Potential for test helper extraction 🔒 Security & Best Practices✅ No security concerns - The code doesn't introduce any vulnerabilities 📋 Testing & CITest Coverage
CI Considerations 🎯 Recommendation✅ APPROVED - This PR is ready to merge. Rationale:
Impact: 📝 Minor Notes
Great work on this improvement! 🎉 |
The schema template auto-generates a created_at column, so passing "created_at" as a user field creates duplicate columns. sqlc then generates a struct with two CreatedAt fields, causing a compilation error - which is exactly what our new validation correctly catches. Fix by using "published_at" instead of "created_at" in the type inference and all-field-types tests. This still tests the _at suffix time inference without conflicting with the auto-generated column. Also revert SkipGoModTidy and sqlc version pin (keep GOWORK env fix). https://claude.ai/code/session_017p67y5KMaW2a5HvF3wSAML
PR Review: Add compilation validation to e2e testsThis PR adds comprehensive compilation validation to all end-to-end tests to catch syntax errors, type mismatches, and missing dependencies in generated code before they reach production. Overall, this is a valuable improvement that will catch bugs earlier in the development cycle. ✅ Strengths1. Well-architected helper moduleThe new
2. Comprehensive test coverageAll 20 e2e tests now validate compilation, which is exactly what's needed to catch issues early. 3. Smart environment isolationThe 4. Proper .gitignore updateAdding 🔍 Code Quality Observations1. Consistent GOWORK handling across codebase✅ The PR correctly follows existing patterns. The new helper uses a more robust approach that filters duplicates. Suggestion: Consider refactoring existing code in 2. Sequential validation stepsThe validation function runs three sequential steps:
✅ This is the correct order - each step depends on the previous one. Suggestion: Consider making validation steps configurable via 3. Error handlingCurrent error messages include command output, which is helpful. Consider also logging successful operations for troubleshooting. 🐛 Potential Issues1. Performance impact (Minor)Running Question: Have you measured the performance impact? Consider:
Suggested approach: func ValidateCompilation(t *testing.T, appDir string) {
t.Helper()
// Skip in local development unless explicitly enabled
if os.Getenv("CI") != "true" && os.Getenv("VALIDATE_COMPILATION") != "true" {
t.Log("Skipping compilation validation (set VALIDATE_COMPILATION=true to enable)")
return
}
// ... rest of implementation
}2. Type inference test improvement (Minor)The test ✅ Good catch! This change is correct. Suggestion: Consider adding validation in the generator itself to warn about reserved field names like 3. Coverage gaps (Question)Looking at the e2e directory, many test files don't appear to call
Question: Should these tests also include compilation validation? If not, why not? 🔒 Security Concerns✅ No security issues foundThe code:
📊 Performance ConsiderationsBuild time overhead per test: ~6-10 seconds
For 20 tests: ~2-3 minutes added to test suite Recommendations:
🎯 Best Practices Alignment✅ Follows repository conventions:
📝 Documentation suggestions:Consider adding:
🎁 Additional Improvements to Consider (Follow-up PRs)
📋 Summary & RecommendationOverall Assessment: ✅ APPROVE with minor suggestionsThis PR significantly improves test quality by catching compilation issues early. The implementation is solid, follows best practices, and integrates well with the existing codebase. Required before merge:None - the PR is ready to merge as-is. Recommended improvements (can be follow-up PRs):
Blocking issues:None Great work on this improvement! The test suite will be much more robust with this change. 🎉 |
PR Review: Add compilation validation to e2e testsThank you for this excellent improvement to the test suite! This PR adds a critical layer of validation that will catch compilation issues early. Here's my detailed review: ✅ Strengths
📋 Code Quality & Best PracticesExcellent:
Minor suggestions:
🐛 Potential IssuesNone found - The code is solid with no apparent bugs or issues. ⚡ Performance Considerations
🔒 Security ConcernsNone identified - The code doesn't handle user input or expose vulnerabilities. The use of 🧪 Test CoverageExcellent coverage:
Suggestion: Consider adding a test for the validation helper itself: // e2e/helpers/validation_test.go
func TestValidateCompilation_InvalidCode(t *testing.T) {
// Create temp app with intentionally broken code
// Verify ValidateCompilation fails appropriately
}📚 DocumentationThe PR description is excellent and comprehensive. The code comments are clear and explain the rationale well. Minor suggestion: Add a comment in the main e2e test files explaining why validation is called at the end: // Validate generated code compiles. This catches syntax errors, type mismatches,
// and missing dependencies before they reach production. Must be called after all
// resources are generated.
helpers.ValidateCompilation(t, appDir)🎯 Recommendations
SummaryThis is a high-quality PR that adds significant value to the test suite with minimal code changes. The implementation is clean, well-documented, and follows Go best practices. The tradeoff of increased test time for improved safety is worthwhile. Verdict: ✅ Approved - Ready to merge Great work on improving the test infrastructure! 🎉 |
2 participants
Summary
This PR adds comprehensive compilation validation to all end-to-end tests to catch syntax errors, type mismatches, and missing dependencies in generated code before they reach production.
Key Changes
New helper module (
e2e/helpers/validation.go): IntroducesValidateCompilation()function that:sqlc generateif applicable (for database-dependent code)go mod tidyto catch dependency issuesgo build ./...to validate all generated code compilesGOWORK=offto isolate test environments from workspace configurationUpdated test files: Added compilation validation calls to all e2e tests:
app_creation_test.go: 4 testsmigration_test.go: 2 testsresource_generation_test.go: 11 testsseeding_test.go: 3 testsUpdated
.gitignore: Added!e2e/helpers/to ensure the new helpers directory is tracked in version controlImplementation Details
t.Helper()to maintain clean test output and error reportingGOWORK=offprevents interference from workspace configurationshttps://claude.ai/code/session_017p67y5KMaW2a5HvF3wSAML