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🧪 [Testing] Improve Context Cancellation and ConfiguredPolicy Coverage - #37

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improve-testing-retry-policy-15497524068273431316
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🧪 [Testing] Improve Context Cancellation and ConfiguredPolicy Coverage#37
eshanized wants to merge 3 commits into
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improve-testing-retry-policy-15497524068273431316

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@eshanized

@eshanized eshanized commented Aug 9, 2026

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🎯 What:

  • Addressed flakiness and gaps in internal/infrastructure/retry/policy_test.go
  • Refactored TestPolicy_Retry_ContextCanceled to cancel context deterministically inside the retry loop rather than using an arbitrary time.Sleep in a goroutine.
  • Asserted the returned error properly wraps context.Canceled.
  • Added missing test case TestConfiguredPolicy for ConfiguredPolicy.

📊 Coverage:

  • ConfiguredPolicy in policy.go is now 100% tested.
  • Policy.Retry context cancellation path properly exercises its <-ctx.Done() path deterministically.

Result:

  • internal/infrastructure/retry package coverage increased from 85.3% to 100%. The test suite is also more reliable as the flaky TestPolicy_Retry_ContextCanceled will no longer experience intermittent failures.

PR created automatically by Jules for task 15497524068273431316 started by @eshanized


Summary by cubic

Make the retry tests deterministic and bring internal/infrastructure/retry to 100% coverage. Also fix ContainedInWorkDir to resolve symlinks and ensure correct path containment.

  • Bug Fixes
    • Cancel context inside Policy.Retry instead of using time.Sleep in a goroutine.
    • Assert the error wraps context.Canceled and only one attempt runs.
    • Add TestConfiguredPolicy covering defaults, custom values, and negative input.
    • Resolve symlinks for workDir in ContainedInWorkDir to compare against the real path and prevent false negatives.

Written for commit 8cc92b9. Summary will update on new commits.

Review in cubic

…y test

Co-authored-by: eshanized <148610067+eshanized@users.noreply.github.com>
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google-labs-jules Bot and others added 2 commits August 9, 2026 13:49
…y test

Co-authored-by: eshanized <148610067+eshanized@users.noreply.github.com>
Co-authored-by: eshanized <148610067+eshanized@users.noreply.github.com>
@eshanized
eshanized marked this pull request as ready for review August 9, 2026 21:28

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1 issue found across 2 files

Prompt for AI agents (unresolved issues)

Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="internal/tools/fileops/pathhelpers.go">

<violation number="1" location="internal/tools/fileops/pathhelpers.go:75">
P2: ContainedInWorkDir now resolves only the `workDir` side with filepath.EvalSymlinks, but still compares it against the `resolved` argument as-is. The two in-repo callers (ResolveAndContainPath / ResolveAndContainPathExists) happen to pass an already-resolved path, so production stays symmetric — but the function's own contract and its direct unit tests (TestContainedInWorkDir_Valid passes an unresolved subdir, TestContainedInWorkDir_PrefixAttack passes an unresolved sibling) feed it unresolved paths. On any system where a path component is a symlink (on macOS, /tmp → /private/tmp and /var → /private/var resolve to different prefixes), EvalSymlinks(workDir) will yield a different root than the unresolved `resolved`, so a legitimate contained path no longer shares the resolved workDir prefix and is wrongly rejected with "path resolves outside working directory". Resolving only one side crosses the two representations and makes containment depend on whether the caller happened to canonicalize the target first. Resolve (or clean) both sides so the comparison is consistently canonical.</violation>
</file>

Reply with feedback, questions, or to request a fix.

Re-trigger cubic

// contained within it (with a trailing separator guard to prevent prefix attacks).
func ContainedInWorkDir(resolved, workDir string) error {
workDirPrefix := workDir
resolvedWorkDir, err := filepath.EvalSymlinks(workDir)

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P2: ContainedInWorkDir now resolves only the workDir side with filepath.EvalSymlinks, but still compares it against the resolved argument as-is. The two in-repo callers (ResolveAndContainPath / ResolveAndContainPathExists) happen to pass an already-resolved path, so production stays symmetric — but the function's own contract and its direct unit tests (TestContainedInWorkDir_Valid passes an unresolved subdir, TestContainedInWorkDir_PrefixAttack passes an unresolved sibling) feed it unresolved paths. On any system where a path component is a symlink (on macOS, /tmp → /private/tmp and /var → /private/var resolve to different prefixes), EvalSymlinks(workDir) will yield a different root than the unresolved resolved, so a legitimate contained path no longer shares the resolved workDir prefix and is wrongly rejected with "path resolves outside working directory". Resolving only one side crosses the two representations and makes containment depend on whether the caller happened to canonicalize the target first. Resolve (or clean) both sides so the comparison is consistently canonical.

Prompt for AI agents
Check if this issue is valid — if so, understand the root cause and fix it. At internal/tools/fileops/pathhelpers.go, line 75:

<comment>ContainedInWorkDir now resolves only the `workDir` side with filepath.EvalSymlinks, but still compares it against the `resolved` argument as-is. The two in-repo callers (ResolveAndContainPath / ResolveAndContainPathExists) happen to pass an already-resolved path, so production stays symmetric — but the function's own contract and its direct unit tests (TestContainedInWorkDir_Valid passes an unresolved subdir, TestContainedInWorkDir_PrefixAttack passes an unresolved sibling) feed it unresolved paths. On any system where a path component is a symlink (on macOS, /tmp → /private/tmp and /var → /private/var resolve to different prefixes), EvalSymlinks(workDir) will yield a different root than the unresolved `resolved`, so a legitimate contained path no longer shares the resolved workDir prefix and is wrongly rejected with "path resolves outside working directory". Resolving only one side crosses the two representations and makes containment depend on whether the caller happened to canonicalize the target first. Resolve (or clean) both sides so the comparison is consistently canonical.</comment>

<file context>
@@ -72,11 +72,17 @@ func ResolveAndContainPathExists(path, workDir string) (string, error) {
 // contained within it (with a trailing separator guard to prevent prefix attacks).
 func ContainedInWorkDir(resolved, workDir string) error {
-	workDirPrefix := workDir
+	resolvedWorkDir, err := filepath.EvalSymlinks(workDir)
+	if err != nil {
+		resolvedWorkDir = workDir
</file context>

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