Closes aws-samples#97. Adds 53 jest tests across the four screenshot files that landed with PR aws-samples#241 + aws-samples#273 with no existing coverage: - github-webhook-verify.test.ts (14): SHA256 sign/verify, sm cache TTL + forceRefresh, ResourceNotFound, transparent re-fetch on signature mismatch / null fresh. - github-webhook.test.ts (15): missing body/sig, ping ack, non-deploy events ignored, malformed JSON, state/environment filters, SCREENSHOT_TARGET_ENVIRONMENT override, missing fields, dedup hit, happy path, rollback-on-invoke-failure, non-condition DDB error. - linear-issue-lookup.test.ts (18): regex covers extract / multi / bounds / case-sensitivity, prefix-routing happy path, case-insensitive prefix match, fallback for legacy rows + post-prefix-miss, null token skip, fuzzy-match guard, GraphQL errors / non-2xx / network failure. - github-webhook-processor.test.ts (15): empty / malformed body, missing fields, token resolve failure, PR retry exhaustion, OPEN-only filter, happy path with CloudFront-host URL assertion, screenshot/S3/comment failure modes (each non-fatal where appropriate), Linear branch fires / falls back to body / skips on no-id / no-resolve / non-fatal post. - agentcore-browser.test.ts (6): StartBrowserSession failures, full CDP exchange (Target.getTargets -> attach -> enable -> navigate -> loadEventFired -> captureScreenshot) returning PNG bytes, Stop invoked in finally even on CDP error, Stop's own failure logged not thrown, 403 unexpected-response surfaced, navigate errorText raised. All tests use jest mocks for AWS SDK clients + an in-test FakeWebSocket for the CDP stream so they run hermetically without real AWS or network. Existing 286/286 handler tests still pass.

Commits

Commits on Jun 10, 2026

feat(screenshot): skip screenshot when preview URL returns non-2xx

test(screenshot): cover the screenshot pipeline

test(screenshot): adapt cherry-picked pipeline tests to post-#240 API

Merge branch 'main' into feat/287-screenshot-network-status

Merge branch 'main' into feat/287-screenshot-network-status