Files
certctl/internal/connector/target/ssh
shankar0123 41a8f5853e Bundle M (Coverage Audit Closure): connector failure-mode round — 3 of 4 sub-batches
M.F5 closes H-001; M.Email closes H-003; M.SSH partial-closes H-002; M.Cloud (H-004) deferred.

M.F5 (~430 LoC f5_realclient_test.go):

  Coverage: 44.6% -> 90.1% (+45.5pp; +5.1 above 85% target)

  Bypasses existing F5Client-interface mock; exercises every realF5Client

  HTTP method end-to-end against httptest.Server with canned iControl REST

  responses. 401-retry path verified. Per-fn ALL previously-0% lifted to

  88-100%. Plus context-cancel test.

M.SSH (~150 LoC ssh_realclient_test.go) PARTIAL-CLOSED:

  Coverage: 55.2% -> 71.6% (+16.4pp; below 85% target)

  Covers buildAuthMethods all branches + WriteFile/Execute/StatFile

  not-connected guards + Close idempotency.

  Connect() ~50 LoC needs embedded golang.org/x/crypto/ssh server fixture

  (~1000 LoC test infrastructure). Tracked as Bundle M.SSH-extended.

M.Email (~340 LoC email_failure_test.go):

  Coverage: 39.7% -> 70.5% (+30.8pp; +0.5 above 70% target)

  Hand-rolled minimal SMTP server (responds to EHLO/AUTH/MAIL/RCPT/DATA/

  QUIT with canned 2xx/3xx/5xx responses based on per-test failOn map).

  Tests:

    - Header-injection (CWE-113): CR/LF/NUL in From/To/Subject reject

      before any SMTP I/O (6 tests across sendEmail + sendHTMLEmail)

    - Connection-refused for both sendEmail and sendHTMLEmail

    - SendAlert / SendEvent full SMTP transactions (happy path)

    - Server-side failures: RCPT 550, DATA 554

    - AUTH PLAIN happy + 535-failure

M.Cloud (H-004) DEFERRED:

  AzureKV 41.2% / GCP-SM 43.1%. Same M.F5 approach (httptest.Server +

  OAuth2 token endpoint mock) is straightforward but ~600 LoC tests +

  ~200 LoC mock infrastructure exceeds session budget. Tracked as

  Bundle M.Cloud-extended.

Verification:

  go vet ./internal/connector/{target/f5,target/ssh,notifier/email}/...  clean

  gofmt -l                                                                clean

  staticcheck -checks all                                                 clean

  go test -short -count=1                                                 PASS

  F5     90.1%  Email 70.5%  SSH 71.6%

Audit deliverables:

  findings.yaml: -0008 (F5) + -0010 (Email) -> closed; -0009 (SSH) ->

    partial_closed; -0011 (Cloud) retained as deferred

  gap-backlog.md: strikethroughs + Bundle M closure-log entry covering all 4 sub-batches

  coverage-matrix.md: 3 new rows for F5/SSH/Email at post-Bundle-M coverage

  closure-plan.md: Bundle M [~] with per-sub-batch status breakdown

  CHANGELOG.md: [unreleased] Bundle M entry
2026-04-27 17:24:55 +00:00
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