🧹 chore: Improve tests coverage #117
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WalkthroughNew tests have been added to improve coverage of directory reading, walking logic, and IPv6 address validation. A custom filesystem wrapper simulating errors was introduced for testing error handling. The IPv6 tests now include additional edge cases to verify correct handling of invalid addresses. Changes
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WalkthroughThe changes introduce new tests to improve coverage of directory and file system handling, as well as IPv6 address validation. A helper type is added to simulate file system errors. The new tests verify error handling, edge cases, and correct behavior in directory traversal and IPv6 parsing logic. Changes
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Summary of Changes
Hello @gaby, 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 test coverage for utility functions related to file system operations and IP address validation. It adds new test cases to cover previously untested code paths and edge cases, enhancing the robustness of these components.
Highlights
- File System Testing: Added comprehensive tests for internal file system utility functions like
readDirNames,readDir, andwalkInternalinfile.go. - IPv6 Validation Edge Cases: Added new test cases to
ips.gospecifically targeting edge cases and invalid formats for IPv6 address validation. - Test Helper: Introduced a custom
errFStype infile_test.goto facilitate testing error handling paths in file system operations.
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Actionable comments posted: 0
🔭 Outside diff range comments (1)
file_test.go (1)
3-13:⚠️ Potential issueMissing
errorsimport breaks the build
errors.Newis used below (lines 155 and 190) but the package is not imported, causing the compile error reported by CI (undefined: errors).
Add the import:"io/fs" "net/http" "os" "path/filepath" + "errors" "runtime" "testing"
🧹 Nitpick comments (1)
file_test.go (1)
112-115: Order-sensitive assertion may be flaky across filesystems
readDirNamesreturns a slice whose order depends on the implementation offs.ReadDirfor the supplied filesystem. On some platforms or future Go versions the order could differ (e.g.john.txtbeforeexample).
Consider usingElementsMatch(order-agnostic) or explicitly sorting the slice before comparing:- require.Equal(t, []string{"example", "john.txt"}, names) + require.ElementsMatch(t, []string{"example", "john.txt"}, names)
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file_test.go(2 hunks)ips_test.go(1 hunks)
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ips_test.go (1)
ips.go (1)
IsIPv6(43-143)
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file_test.go
[failure] 190-190:
undefined: errors
[failure] 155-155:
undefined: errors
[failure] 190-190:
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file_test.go
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file_test.go
[error] 155-155: Compilation error: undefined identifier 'errors'.
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🔇 Additional comments (1)
ips_test.go (1)
79-93: 👍 Extra edge-case coverage looks solidThe new
Test_IsIPv6_EdgeCasestable probes four tricky failure scenarios that were previously untested and maps cleanly to the guard rails inIsIPv6. This should prevent silent regressions around oversized hex groups, misplaced/oversized embedded IPv4s and misuse of the ellipsis. No issues spotted here.
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🔭 Outside diff range comments (1)
file_test.go (1)
3-13:⚠️ Potential issueFix compilation failure – add missing
"errors"import.
errors.Newis used inTest_walkInternal_ErrorandTest_walkInternal_StatErrorPropagate, but the package isn’t imported, causing the pipeline error shown in CI.@@ "fmt" "io/fs" "net/http" "os" + "errors" "path/filepath" "runtime" "testing"
🧹 Nitpick comments (1)
file_test.go (1)
165-170: Minor: receiver can be pointer to avoid struct copying (optional).
Openuses a value receiver, so every call copies the embeddedhttp.FileSystemandfailstring. Copy cost is tiny here, but switching to a pointer receiver aligns with commonhttp.FileSystemwrappers and avoids accidental copies if the struct grows.-func (e errFS) Open(name string) (http.File, error) { +func (e *errFS) Open(name string) (http.File, error) {Call sites remain unchanged.
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📒 Files selected for processing (2)
file_test.go(2 hunks)ips_test.go(1 hunks)
🧰 Additional context used
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ips_test.go (1)
ips.go (1)
IsIPv6(43-143)
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file_test.go
[failure] 190-190:
undefined: errors
[failure] 155-155:
undefined: errors
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file_test.go
[error] 155-155: Compilation error: undefined identifier 'errors' in test file.
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🔇 Additional comments (1)
ips_test.go (1)
79-93: Edge-case tests add valuable coverage – looks good.
The new inputs correctly target failure branches inIsIPv6(oversized hex, misplaced/oversized IPv4, malformed ellipsis). No issues spotted.
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Code Review
The pull request significantly improves test coverage for file system utilities and IP address validation. The new tests are comprehensive and cover important edge cases and error conditions. A potential issue is the path resolution for test data in file_test.go, which might need adjustment to ensure tests are robust across different environments.
Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## master #117 +/- ##
==========================================
+ Coverage 90.89% 96.03% +5.14%
==========================================
Files 9 9
Lines 505 505
==========================================
+ Hits 459 485 +26
+ Misses 33 14 -19
+ Partials 13 6 -7
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Actionable comments posted: 1
🧹 Nitpick comments (3)
file_test.go (3)
28-35: Assert the error before inspecting the payload
require.Equalis executed prior torequire.NoError.
IfReadFileunexpectedly returns an error, the first assertion will still run (with possiblynildata) and report a confusing mismatch. Swap the order for clearer failure signals.- file, err := ReadFile("john.txt", testFS) + file, err := ReadFile("john.txt", testFS) + require.NoError(t, err) // fail fast
25-26: Hard-coded relative path risks flakinessThe tests assume they are executed from the repository root (
".github/tests").
go test ./...runs each package from its own directory, so this path will be wrong when the
utilspackage is not at the repo root. Prefert.TempDirfixtures or embed testdata under the
package’stestdatafolder (which Go tooling treats specially).Example:
testFS := os.DirFS("testdata")Also applies to: 66-67
166-171: Path comparison may fail on mixed separators
filepath.Clean(name)returns OS-specific separators; whenerrFS.failis built with
filepath.Join, both sides should match, but iffailis initialised with a hard-coded
slash ("a/b.txt"), the comparison can miss on Windows.
Consider normalising both strings to forward slashes usingfilepath.ToSlashfor resilience.if filepath.ToSlash(filepath.Clean(name)) == filepath.ToSlash(e.fail) {
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file_test.go(2 hunks)
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file_test.go
[failure] 192-192:
unused-parameter: parameter 'path' seems to be unused, consider removing or renaming it as _ (revive)
[failure] 179-179:
unused-parameter: parameter 'err' seems to be unused, consider removing or renaming it as _ (revive)
[failure] 179-179:
unused-parameter: parameter 'info' seems to be unused, consider removing or renaming it as _ (revive)
[failure] 179-179:
unused-parameter: parameter 'path' seems to be unused, consider removing or renaming it as _ (revive)
[failure] 157-157:
unused-parameter: parameter 'err' seems to be unused, consider removing or renaming it as _ (revive)
[failure] 157-157:
unused-parameter: parameter 'info' seems to be unused, consider removing or renaming it as _ (revive)
[failure] 142-142:
unused-parameter: parameter 'err' seems to be unused, consider removing or renaming it as _ (revive)
[failure] 142-142:
unused-parameter: parameter 'info' seems to be unused, consider removing or renaming it as _ (revive)
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Summary
ips.gofile.goNote
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