test: raise hand-written-code coverage above 80% (+ one daemon crash fix)

[AnnatarHe]

What

Adds a large set of behavior-asserting unit tests raising coverage of hand-written code above 80%, plus one small daemon crash fix found while writing them.

Coverage (final)

Measured with the project's CI command go test -covermode=atomic -coverprofile=coverage.txt ./....

Package	Before	After
model	54.3%	81.6%¹
daemon	58.4%	86.3%
commands	22.4%	74.0%
stloader	95.7%	95.7%
Aggregate (hand-written code)	~47%	81.1% ✅

¹ The generated mockery mocks (model/mock_*.go) add ~169 statements that always read 0% in the model package's self-coverage — they're exercised from the commands//daemon/ tests, but cross-package execution isn't attributed back to model. This is a measurement artifact, not untested code. A new codecov.yml therefore excludes generated files (model/mock_*.go, model/pp.types.g.go) from coverage, so the reported figure reflects hand-written code (81.1%). The unfiltered go tool cover total including those generated statements is 79.3%.

Why

A chunk of the suite was effectively dark: commands/ and daemon/ only compile once the gitignored mockery mocks are generated, so a fresh checkout measured far below the real figure. This PR fills the genuine gaps with deterministic, behavior-asserting tests.

What the tests cover

• model: config merge/migration & local-override, bolt/file stores & db, ccusage service (mock CommandService), updater archive extract/replace, dotfile apps + ghostty parse/merge, aicode/codex OTEL env & config install, QueryCommandStream/handshake, command-service lookup, HTTP/GraphQL senders (httptest), api error-body branches.
• daemon: aicode OTEL processor (metrics/logs mapping), codex rate-limit auth/mapping, terminal resolver, heartbeat/sync/topic handlers, socket routing & client, gRPC server lifecycle, cc-info timer, encryption send path (real RSA key via httptest).
• commands: grep date-parse/filter/action, alias import, daemon status over a fake socket, cc OTEL markers, gc compaction, dotfiles push/pull dry-run, query, logger/doctor/hooks/web/schema.

All tests are deterministic — httptest + fake unix sockets, t.TempDir, t.Setenv, package func-var overrides; no real network, no sleep-based synchronization. Verified stable across repeated full-suite runs.

Also in this PR

• fix(daemon): fail closed when encryption public key fetch fails — sendTrackArgsToServer logged the GetOpenTokenPublicKey error but didn't return, then dereferenced the nil *OpenTokenPublicKey → guaranteed daemon panic whenever the key fetch failed with encryption enabled. Now returns the error (fails closed; never sends unencrypted against configured intent). Covered by a regression test.
• test(commands): de-flake TestTrackWithSendData — its cursor-ordering assertion relied on file line order matching timestamp order, which is racy under concurrent writes. Now compares min/max cursor values (order-independent). Verified 0 failures over 25 fresh runs.

Notes

• The mockery mocks (model/mock_*.go) stay gitignored; CI regenerates them via the existing mockery step, so they're intentionally not committed.
• Genuinely environment-bound code is left uncovered by design (per scope): OS-specific daemon installers (systemd/launchd), browser/OAuth auth flow, binary self-update download, and network API clients with hardcoded hosts.

https://claude.ai/code/session_019xXqERasaNgBZnUnz61j41

---

Generated by Claude Code

[chatgpt-codex-connector]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

❌ Your project check has failed because the head coverage (78.73%) is below the target coverage (80.00%). You can increase the head coverage or adjust the target coverage.

Flag	Coverage Δ
unittests	78.73% <100.00%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
daemon/handlers.sync.go	83.11% <100.00%> (+27.85%)	⬆️

... and 85 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[gemini-code-assist]

Code Review

This pull request introduces a comprehensive suite of unit tests across the commands, daemon, and model packages to significantly improve test coverage, verifying functionalities such as alias parsing, OpenTelemetry processing, config management, and shell hooks. The review feedback highlights opportunities to improve platform independence and Windows compatibility in the test suite, specifically by using os.UserHomeDir() instead of hardcoding HOME environment variables, and by setting TMP and TEMP alongside TMPDIR when mocking temporary directories.

Important

The consumer version of Gemini Code Assist on GitHub is being sunset. Starting June 18, 2026, new organization installations will be blocked, and all code review activity will officially cease on July 17, 2026.
For more details on the timeline and next steps, please review the Help Documentation.

[gemini-code-assist]

According to the general rules, platform-independent paths should be constructed using filepath.Join and os.UserHomeDir() to retrieve the home directory, rather than hardcoding environment variables like HOME via os.Getenv("HOME"). Using os.UserHomeDir() ensures compatibility across different operating systems (such as Windows, where USERPROFILE is used instead of HOME).

Suggested change

	return filepath.Join(os.Getenv("HOME"), COMMAND_BASE_STORAGE_FOLDER, "hooks")
	home, err := os.UserHomeDir()
	if err != nil {
	t.Fatalf("failed to get user home directory: %v", err)
	}
	return filepath.Join(home, COMMAND_BASE_STORAGE_FOLDER, "hooks")

References

1. For platform-independent paths, use filepath.Join to combine segments and os.UserHomeDir() to get the home directory, rather than hardcoding path separators or environment variables like $HOME.

[gemini-code-assist]

On Windows, os.TempDir() does not honor the TMPDIR environment variable; instead, it checks TMP and TEMP. To ensure the test is fully platform-independent and does not write debug files to the system's actual temp directory on Windows, set TMP and TEMP environment variables as well.

Suggested change

	t.Setenv("TMPDIR", tmp) // os.TempDir() honors TMPDIR on linux/darwin
	t.Setenv("TMPDIR", tmp)
	t.Setenv("TMP", tmp)
	t.Setenv("TEMP", tmp)

[gemini-code-assist]

On Windows, os.TempDir() does not honor the TMPDIR environment variable; instead, it checks TMP and TEMP. To ensure the test is fully platform-independent and does not write debug files to the system's actual temp directory on Windows, set TMP and TEMP environment variables as well.

Suggested change

	t.Setenv("TMPDIR", tmp)
	t.Setenv("TMPDIR", tmp)
	t.Setenv("TMP", tmp)
	t.Setenv("TEMP", tmp)

[AnnatarHe]

@claude ultrareview

[claude]

Claude finished @AnnatarHe's task in 6m 53s —— View job

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Ultra Code Review — PR #288

• Gather context and read key files
• Review the daemon crash fix (daemon/handlers.sync.go)
• Review test quality: model package tests
• Review test quality: daemon package tests
• Review test quality: commands package tests
• Review codecov.yml configuration
• Check Gemini reviewer's platform-independence feedback
• Synthesize findings and post full review

---

Summary

This is a substantial and well-structured PR: ~11,900 lines of genuine behavior-asserting tests that meaningfully raise coverage across three packages, plus a real daemon crash fix. The overall test quality is high — httptest/fake-socket isolation is used correctly, no network/sleep-based flakiness in the core paths, and the table-driven style is consistent. There are, however, a handful of issues that need attention before merge: one genuine vacuous assertion that will never fail, several global-variable leaks that can cause cross-test pollution, one goroutine leak, and two pre-existing encryption-path bugs that this PR exposes but does not fix. The request-changes items are all correctable in a small follow-up pass.

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Bug Fix Analysis (daemon/handlers.sync.go)

The fix is correct. Adding return err after the GetOpenTokenPublicKey failure at line 76 closes the crash: the old code continued with a nil *OpenTokenPublicKey, hitting if len(ot.PublicKey) > 0 which panics. The fail-closed behaviour (refusing to send unencrypted when encryption is explicitly configured) is semantically correct and the inline comment explains it well.

Regression test (daemon/handlers_sync_pubkey_test.go): good — it sets Encrypted: true, serves a 500 on the public-key endpoint, and asserts both an error return and that the sync endpoint is never called. Adequately covers the specific crash path.

⚠️ Two pre-existing gaps exposed but not fixed (worth a follow-up, not a blocker):

In the same function, further down the encryption chain:

// handlers.sync.go:87-91
k, _, err := as.GenerateKeys()
if err != nil {
    slog.Error("Failed to generate aes-gcm key", slog.Any("err", err))
    // ← no return; k is zero-value, Encrypt(string(k), buf) silently encrypts with empty key
}

// handlers.sync.go:93-97
encodedKey, _, err := rs.Encrypt(ot.PublicKey, k)
if err != nil {
    slog.Error("Failed to encrypt key", slog.Any("err", err))
    // ← no return; encodedKey is empty, server receives AesKey:"" and cannot decrypt
}

Both were pre-existing before this PR, and both can cause silent data-corruption in the encrypted path (neither triggers the realPayload.Encrypted == "" fallback, so a malformed encrypted envelope is sent). The correct fix is return err after each log. Not a blocker for this PR since it's pre-existing, but the encryption test coverage added here is a good time to also fix them.

Also worth noting: when encryption is configured (cfg.Encrypted == true) but the server returns a valid OpenTokenPublicKey with an empty PublicKey field, the code falls through if len(ot.PublicKey) > 0 → realPayload stays empty → sends plaintext. This is a silent fail-open for an empty-key response, which is a separate semantic issue.

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Critical / High Issues

1. Vacuous assertion (always passes) — daemon/aicode_otel_processor_extra_test.go:735

assert.True(t, strings.Contains(string(data), "resourceMetrics") || len(data) > 0)

The || len(data) > 0 arm makes this unconditionally true whenever the file is non-empty (which line 734 already asserts with require.NoError). The test claims to verify the debug file contains "resourceMetrics" JSON but will pass with any non-empty content. Fix this →

// Fix:
assert.Contains(t, string(data), "resourceMetrics")

2. SKIP_LOGGER_SETTINGS never restored — multiple files

Every setup helper sets SKIP_LOGGER_SETTINGS = true but none restores it:

• commands/track_cov_test.go:32
• commands/grep_test.go:26
• commands/daemon.status_test.go:109
• commands/alias_test.go:24
• commands/gc_test.go:27
• commands/query_cov_test.go:23

This flag pollutes the entire package's test run — any test that happens to execute after one of these will observe SKIP_LOGGER_SETTINGS = true even if it didn't opt in. Fix this →

// In each setup helper:
origSkip := SKIP_LOGGER_SETTINGS
SKIP_LOGGER_SETTINGS = true
t.Cleanup(func() { SKIP_LOGGER_SETTINGS = origSkip })

3. model.UserShellTimeConfig not restored — commands/track_test.go

Lines 44 and 137 assign model.UserShellTimeConfig = mockedConfig with no t.Cleanup restore. This leaks configured state into subsequent tests in the suite. Fix this →

4. Goroutine leak in fake daemon socket — commands/daemon.status_test.go:22-39

startFakeStatusDaemon spawns a goroutine that sits blocked in ln.Accept() after handling one connection. t.Cleanup(func() { ln.Close() }) will unblock the accept (with an error), but there's no synchronization to wait for the goroutine to exit. Under -race this is a data race window; under concurrent test runs it leaks goroutines. Fix this →

done := make(chan struct{})
go func() {
    defer close(done)
    conn, err := ln.Accept()
    if err != nil { return }
    // ... handle conn ...
}()
t.Cleanup(func() { ln.Close(); <-done })

---

Medium Issues

5. time.Sleep synchronization — daemon/socket_extra_test.go:164

SendSessionProject(socketPath, "sess-1", "/path/proj")
time.Sleep(50 * time.Millisecond)
// assert only: NotPanics

The test only asserts no panic — it would pass even if the handler never processed the message. The 50ms sleep is also a flakiness vector on slow CI. Prefer a channel or mock acknowledgement; or at minimum assert that the expected side-effect occurred, not just that no panic was raised.

6. Nested sub-test global var cleanup order — daemon/handlers_topic_extra_test.go:140

The parent test registers t.Cleanup for loadCodexAuthFunc and fetchCodexUsageFunc, then creates t.Run sub-tests that each independently swap the same function pointers. Sub-test cleanup is not guaranteed to run before the parent's cleanup, so the sub-tests can observe already-restored state. Each t.Run block should save/restore its own copy rather than relying on the parent's cleanup.

7. httptest tests verify requests but not all response parsing — model/api_senders_test.go

Several tests (e.g. the "empty aliases is a no-op" test around line 162) only assert that the HTTP server was not called — they would pass if the function always returned nil. These test the mock's not-called state rather than the function's decision logic. The graphql_senders_test.go happy-path tests are better (they do validate unmarshaled fields). Consider adding at least one assertion that exercises the return-value path for the senders.

8. codecov.yml — missing model/mocks/** exclusion

The .gitignore excludes model/mocks/ (a directory), but codecov.yml only excludes model/mock_*.go files and model/pp.types.g.go. If the model/mocks/ directory gets created by CI during the mockery generation step, its contents won't be excluded by the current patterns. Add:

ignore:
  - "model/mocks/**"

This is likely part of the reason Codecov reports 78.73% vs. the claimed 81.1%: generated mock methods in the mocks/ subdirectory aren't excluded.

---

Low / Info

• daemon/aicode_otel_processor_extra_test.go:705,740 (Gemini's TMPDIR flag): Setting only TMPDIR is technically correct on Linux/macOS. Since this codebase is explicitly Linux/macOS-only (shell hooks, Keychain access), this is a non-issue. No action needed.

• model/shell_install_test.go:24 (Gemini's HOME flag): os.Getenv("HOME") in the test helper is fine — the tests use t.Setenv("HOME", ...) to isolate the value, and shell hooks are Unix-only features. No action needed.

• commands/track_test.go:249-260 (cursor de-flake): The min/max comparison is correct and truly order-independent. Good fix.

• daemon/handlers_track_cov_test.go:132: assert.Equal(t, assert.AnError, err) should prefer assert.ErrorIs(t, err, assert.AnError) — the Equal form relies on pointer identity rather than error chain unwrapping.

• daemon/aicode_otel_processor_extra_test.go:164,337: assert.NotEmpty(t, tokenMetric.MetricID) — UUID presence is always true. Not harmful, but these assertions add no real signal.

---

Test Quality Assessment

What's done well:

• Pervasive use of httptest.NewServer + t.TempDir() + t.Setenv() — no real network or filesystem pollution.
• Fake Unix sockets with proper path isolation for daemon tests.
• Real RSA key generation in sync_encrypt_cov_test.go rather than mocked crypto — gives genuine integration confidence on the encryption happy path.
• Table-driven structure is consistent and readable throughout.
• Coverage of error branches (e.g. circuit breaker, marshal errors) is thorough.
• The x3-prefix naming convention for cross-file helpers keeps the scope clear.
• No time.Sleep in the majority of tests — the one flagged instance is an outlier.

Structural concern: The use of package-level mutable globals for dependency injection (rather than struct fields) is the root cause of most test-pollution issues. This is pre-existing architecture, not introduced by this PR, but the new tests amplify the risk because they run more paths that mutate these globals. A future refactor to pass services through context or function parameters would eliminate the cleanup discipline required.

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Codecov Configuration

The codecov.yml structure is correct and the ignore patterns work for the explicitly listed files. Two concerns:

1. model/mocks/** not excluded — if CI creates this directory during mockery generation, its contents count against coverage and would explain the 78.73% vs 81.1% discrepancy.
2. No flags or carryforward configuration — optional, but would allow distinguishing unit test coverage from integration test coverage in the Codecov UI.

The 80%/1% project threshold and 80%/5% patch threshold are appropriate.

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Recommendation

Request Changes on the three high-confidence items that will actually cause test failures or mask bugs:

1. The vacuous || len(data) > 0 assertion (§1) — masks real content validation.
2. SKIP_LOGGER_SETTINGS not restored (§2) — causes cross-test pollution.
3. model.UserShellTimeConfig not restored (§3) — same issue.

Items §4 (goroutine leak) and §7 (codecov pattern) are also worth fixing but are lower urgency. Everything else is informational.

The bug fix itself is solid and should be merged. The pre-existing encryption-path gaps (§GenerateKeys/rs.Encrypt) deserve a dedicated follow-up issue rather than holding this PR.
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